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Backpacking Skyline to the Sea Trail

The Skyline to the Sea trail is a 28-mile trek through Big Basin and Castle Rock State Parks. Backpacking the Skyline to the Sea trail is a great beginner trip that can be done over 3 or 4 days.

As the trail winds through the Santa Cruz mountains you pass waterfalls, walk through groves of old-growth Redwoods, and are treated to stunning views of thickly-forested canyons.

All of the campsites along the way have pit toilets and food storage boxes. Some campsites even have running water.

Most people take three days to backpack Skyline to the Sea. A common itinerary is:
Day 1: Castle Rock State Park to Waterman Gap Camp (9 miles)
Day 2: Waterman Gap to Jay Camp (9 miles)
Day 3: Jay Camp to Waddell Beach (10 miles)
Check out the maps and the detailed day-by-day descriptions below for more information about each section of the trail and some possible alternate routes.

Best Time to Backpack Skyline to the Sea

The best time to backpack Skyline to the Sea is in the Spring, Summer, or Fall. In the winter the park service removes many of the bridges and some of the creek crossings may be too deep to cross.

While all of the camps along the Skyline to the Sea trail are open year-round, the camps are only serviced May 1st through October 31st. If you camp November 1st through April 31st the camps will not have trash cans and the pit toilets will not be serviced. Bring your toilet paper and be prepared to pack out all of your trash. If you’re hiking in the winter be sure to call the park before heading out to get information about current trail conditions.

Map of the Skyline to the Sea Trail

Trail map for 28 miles on the Skyline to the Sea Trail in Big Basin and Castle Rock State Parks.
Elevation profile for the 28-mile Skyline to the Sea Trail in Castle Rock and Big Basin State Parks

The trail is well signed, and pretty easy to follow. If you start at the Castle Rock trailhead you’ll need to follow a series of trails before connecting with the Skyline to the Sea Trail.

Once you reach Waterman Gap Trail Camp you’ll be on the Skyline to the Sea Trail for the rest of your journey. I used the trail maps in the park brochures, but if you want a map of the complete trail, and all of the connecting trails, check out the Big Basin and Castle Rock trail map from Redwood Hikes Press. You can also check out the Backcountry Trail Guide for some optional starting points, and route variations.

You can also download my GPS tracks from Caltopo and print trail maps directly from Caltopo.

Booking Campsites for Skyline to the Sea

Aside from the Castle Rock Trail Camp, reservations for all other campsites along the Skyline to the Sea trail must be made in advance. Reservations can be made online 60 days in advance, or you can try to snag a last-minute campsite by calling the park.

To make a reservation, check the park’s trail camp calendar to make sure that campsites are available for your dates. If there are available sites, fill-out a backcountry trail camp request online. If your reservation is accepted, the park will email you, and you will need to call the park to confirm and pay for your reservation within 24-hours.

The park’s Backcountry Trail Camp Guide is great resource for alternate backpacking itineraries and booking information.

Hiking through groves of old growth redwood trees on the Skyline to the Sea Trail

Transportation for the Skyline to the Sea Trail

If you’re backpacking the Skyline to the Sea Trail, getting to-and-from the trailhead is probably the most difficult part of this hike. There’s no public transportation in the area and cell service is spotty at best, so don’t expect to hire an Uber or Lyft.

Most Skyline to the Sea hikers choose to shuttle cars- leaving a vehicle at the starting point and at the end point. If you are hiking the trail East to West you’ll want to park one vehicle at Waddell Beach, and then drive up to the Castle Rock trailhead. There’s limited parking at the trailheads, and the small parking area at Castle Rock often fills to capacity by 9:30am on weekends. Make sure to arrive early because if you arrive when the lot is full you may end up waiting hours for a parking space. (You are not allowed to park your car on the side of the road overnight.)

Carpooling will also save you some cash because the parking fees can add up. The parking lot at Castle Rock costs $8 per day and the Waddell Beach parking area costs $10 per day.

If you don’t have two vehicles, or if you are a solo hiker, you’ll want to enlist the help of a friend or family member to drop you off or pick you up. Some hikers have also used Craigslist to hire drivers to meet them at Waddell Beach and drive them to Castle Rock. If you hire a random person to drive you, and they aren’t familiar with the long-term parking area at Waddell Beach, it’s probably best to arrange to meet at the public beach parking area on the West side of Highway 1 and then have them follow you to the trailhead parking. (The parking area is through the closed yellow gate on the east side of Highway 1, directly opposite the beach parking lot.)

The roads that cut through the Santa Cruz mountains are windy and slow-going. Expect to spend one hour driving from Waddell Beach to the Castle Rock parking area. Since these rugged mountain roads are easily damaged by winter storms, you can use the Caltrans website to check road conditions before choosing your route.

Day 1: Castle Rock to Waterman Gap Camp

Trail Map for Skyline to the Sea Day 1 from Castle Rock State Park to Waterman Gap Camp.
Trail elevation for Skyline to the Sea Day 1 from Castle Rock State Park to Waterman Gap Camp.

The 9-mile trek through Castle Rock State Park is one of my favorite parts of the hike. From waterfalls to cool rock formations, there’s a lot to see in the first two miles of the trail. This can also be the most difficult part of the trek. On a hot day the chaparral forest offers very little shade for the first half of the trek, and navigating up and down the rocks with a large pack takes some effort.

Be sure to fill your water bottles at home because there isn’t any running water at the trailhead, or anywhere along the trail. If you don’t have a filter, your first water source isn’t until you reach Waterman Gap camp at the end of the day.

Begin your hike by taking the Saratoga Gap trail toward the Castle Rock Trail Camp. After about a mile you’ll come to an overlook. Take a peek over the edge to see the waterfall, and usually a few rock climbers below. Follow the Saratoga Gap Trail for 2.5 miles to the Castle Rock Trail Camp. Along the way you’ll navigate some small rock formations, and may even need to use the metal wire “hand rail” to help propel you over the rocks. You’ll also get some great views of the Santa Cruz Mountains, and you can even spot the Waterman Gap campsite if you follow the line of power poles across the canyon.

View across the Santa Cruz mountains from Castle Rock State Park

If you’re hiking on a Thursday, Friday, Saturday, or Sunday you may hear gunshots as you approach camp. Don’t worry! This is just the folks at the Los Altos Rod and Gun Club practicing their target skills.

If you have a relaxed itinerary you can camp at the Castle Rock Trail Camp. The campground is first come, first serve, but there is no water available at the camp.

There are 20 campsites at Castle Rock Trail Camp. The campsite fees are $15 a night for up to 6 people. This fee includes overnight parking for one vehicle. The park doesn’t accept advance reservations, so you’ll want to get to the park early if you want to snag a campsite on a weekend.

When you reach the Castle Rock Trail Camp, continue straight through the campground on the Saratoga Gap Trail. The trail will widen into a fire road as it drops into the canyon. After about three-quarters of a mile, make a left on the Travertine Springs Trail toward Saratoga Toll Road. The trail narrows into a single track, and when I hiked the trail in May 2019 there were a few fallen trees and lots of poison oak protruding into the trail. After about a mile you’ll reach Travertine Springs, a nice shady grove that beckons you to take a break and enjoy the burbling creek.

After breaking, continue climbing for a bit until you reach a three-way intersection, and make a left on the Saratoga Toll Road Trail (the trail marker was missing when I hiked in May 2019). You’ll continue climbing uphill on this trail for about a mile. You’re now starting to round the canyon and the sound of gunfire will fade in and out. Make a right and go uphill on the Beekhuis Road Trail, before making a left on the Skyline to the Sea Trail.

As you walk along the Skyline to the Sea Trail you’ll cross a few private driveways. You’ll also see some old cars and an antique bath tub that somehow made their way into the canyon from the road above you.

A car that crashed into the canyon along the Skyline to the Sea Trail

The Waterman Gap Camp will be on the left. The trail camp has six individual campsites. There are three campsites gathered around a clearing near the bathrooms, one campsite down the hill to the left of the bathroom, and two hidden campsites down a short trail, behind campsite four.

The camp has a pit toilet, a water spigot, food storage boxes, and trash cans. It also has a lot of street noise and you can hear the large trucks, motorcycles, and sports cars as they zip by. Bring ear plugs if you’re sensitive to noise. We chose one of the campsites near the bathroom because it had a nice kitchen with a tree stump in the middle and some nice log seats.

Our campsite at Waterman Gap was in the main clearing near three other campsites

These campsites must be reserved in advance and often fill to capacity on the weekends. If you have the flexibility to backpack during the week you might have the camp all to yourself!

Day 2: Waterman Gap Camp to Jay Camp

Trail map for Skyline to the Sea Day 2 from Waterman Gap Camp to Jay Camp.
Trail elevation for Skyline to the Sea Day 2 from Waterman Gap Camp to Jay Camp.

You’ll get your first glimpse of big trees on the first day of the hike, but it’s on the second day of hiking when the Coastal Redwoods really shine. During the 9-mile hike from Waterman Gap to Big Basin Park Headquarters you’ll wind your way through groves of old growth and second growth redwoods.

To start your hike, make a left out of camp to pick-up the Skyline to the Sea Trail. You’ll follow the Skyline to the Sea trail all the way to Big Basin Park Headquarters. The trail starts climbing uphill almost immediately and crosses Highways 9 and 236 several times within the first two miles of the hike.

Just before the 5-mile mark the trail crosses China Grade Fire Road and the landscape changes drastically. The big trees are replaced with manzanita and smaller pines, and the trail crosses over some cool rock formations. There are several viewpoints along this stretch that are perfect for a rest or snack break.

The Skyline to the Sea Trail near China Grade has beautiful views and cool rocks.

Before you know it, you’re surrounded by big trees again. As you get closer to the park headquarters the trail becomes quite a bit busier and you’ll walk along a creek that runs through a lush fern canyon. You’ll pass a large picnic area before reaching the park headquarters.

As you approach the park headquarters the Skyline to the Sea trail turns into a wide fire road.

If you arrive to the park early you can load up on snacks and beverages at the cafe and check out the exhibits at the museum and visitor’s center before heading to camp. If you’re hiking on the weekend, check the schedule at the visitor’s center to see if there are any ranger-led educational programs being offered.

Also, be sure to stop in at the Big Basin Gift Shop to get your Skyline to the Sea trail sticker to commemorate your hike! (If you forget to snag one at the gift shop you can also purchase one on Etsy.)

I snagged a Skyline to the Sea trail sticker at the Big Basin gift shop

To reach Jay Camp pass the park gift shop and cafe, and when you reach the parking lot follow signs for the nature trail. Make a left on the nature trail and stay straight until the trail crossed Highway 236 and passes through a gate.

The entrance to the trail camps will be behind the parking area, opposite the bathrooms and park residence. Jay Camp has food storage boxes, running water (including flush toilets!) and coin-operated showers. Some campsites even have picnic tables.

The Skyline to the Sea campsites at Jay Camp have picnic tables and running water

Day 3: Waterman Gap to Waddell Beach

Trail map for Skyline to the Sea Day 3 from Jay Camp to Waddell Beach.
Trail elevation for Skyline to the Sea Day 3 from Jay Camp to Waddell Beach.

The third day of hiking is the longest, but the easiest part of the hike. You’ll hike 10 miles from Jay Camp to Waddell Beach and along the way you’ll cross several creeks and pass Berry Creek Falls.

To reach the trailhead from Jay Camp, follow your tracks from the previous day and go back toward park headquarters along the nature trail. The Skyline to the Sea Trail near park headquarters occasionally has detours. Check the information board near the parking lot for current trail information. If there aren’t any detours, you can pick-up the Skyline to the Sea Trail near the parking area and the amphitheater. You’ll follow signs for the Skyline to the Sea trail all the way to Waddell Beach.

The third day of the Skyline to the Sea trail runs along a creek

After a brief uphill climb, the majority of the trail is slightly downhill or flat. As you drop into a canyon with several downed trees, the trail runs along Berry Creek. Watch out for slow-moving Banana Slugs and Giant Salamanders on the trail and enjoy the views of the creek. After you pass Berry Creek Falls and cross Waddell Creek, the trail turns into a wide, flat fire road.

The Skyline to the Sea trail is wide and flat as it runs along Waddell Creek

About two miles from the end of the hike you’ll pass the Twin Redwoods Camp. The campground has the first available bathroom on the trail since leaving Jay Camp, but it does not have running water.

Shortly after passing Twin Redwoods the trail splits. Hikers are urged to take the narrow, single track trail to the right so that bikers and horses can use the wider fire road to the left. The narrow hiking trail has some steep uphill sections and is a bit more difficult than the fire road, but the views of Waddell Beach are worth the extra effort. As you admire the ocean views think about how far you’ve come!

Looking down on Waddell Beach from the Skyline to the Sea Trail.

The Trailhead

This one-way hike can be started from the trailhead near the Rancho del Oso Horse Camp near Waddell Beach, or from Castle Rock State Park. Most people prefer the "downhill" route and begin at the Castle Rock trailhead. Hikers can leave a car at the Waddell Beach Skyline to the Sea long-term parking area near Ranch del Oso Horse Camp. They then, shuttle a second car to park it at Castle Rock, or have a generous friend drop them off at Castle Rock.

To find the Castle Rock parking area you can map to Castle Rock State Park Parking, Castle Rock Trail or click to see the location on Google Maps. The trailhead at Castle Rock is found near the large information board, on the opposite side of the parking area from the bathrooms.

The Route

Beginning at the Castle Rock parking lot, take the Saratoga Gap trail toward the Castle Rock Trail Camp. Follow the Saratoga Gap Trail for 2.5 miles to the Castle Rock Trail Camp. Continue straight through the campground on the Saratoga Gap Trail.

Make a left on the Travertine Springs Trail toward Saratoga Toll Road. When you reach a three-way intersection, make a left on the Saratoga Toll Road Trail.

Make a right and go uphill on the Beekhuis Road Trail, before making a left on the Skyline to the Sea Trail. The Waterman Gap Camp will be on the left.

Follow the Skyline to the Sea trail all the way to Big Basin Park Headquarters. The trail crosses Highways 9 and 236 several times before reaching park headquarters.

To reach Jay Camp pass the park gift shop and cafe, and when you reach the parking lot follow signs for the nature trail. Make a left on the nature trail and stay straight until the trail crossed Highway 236 and passes through a gate. The entrance to the trail camps will be behind the parking area, opposite the bathrooms and park residence.

If you stayed overnight at Jay Camp, follow your tracks from the previous day and go back toward park headquarters along the nature trail. The Skyline to the Sea Trail near park headquarters occasionally has detours. If there aren't any detours, you can pick-up the Skyline to the Sea Trail near the parking area and the amphitheater. You'll follow signs for the Skyline to the Sea trail all the way to Waddell Beach.

If there are detours on the Skyline to the Sea Trail, you can take the Dool and Sunset Trails to the Sunset Connector Trail. Walk past the park gift shop and cafe and pick-up the Sunset Trail near the end of the parking area. The Sunset Connector Trail will lead you to the Skyline to the Sea Trail.

Other Details

No dogs allowed on the trail.

The Waterman Gap Camp and Jay Camp have food storage boxes, running water, and pit toilets. Running water is not available at the other trail camps.

Parking fees at Castle Rock is $8 per day, per vehicle.

Parking fees at Waddell Beach is $10 per day, per vehicle.

Like all outdoor pursuits, hiking can be dangerous. It is up to you to assess your fitness level and education yourself about any potential dangers. While I try to regularly update these hiking guides, you should always research trail conditions before heading out.

Being prepared means arriving at the trailhead with water and some basic provisions. Each and every time I hit the trail I bring a backpack with more water than I think I need, a small first aid kit, and a snack. I also share my itinerary and plans with friends or family and I carry an InReach so I can summon help if needed. If you want to know what I carry in my pack during day hikes check out my blog post about essential gear for day hikers.

Stay safe, enjoy the trail, and soak up the magic of nature!

Get your Skyline to the Sea Trail Sticker on Etsy or in Our Store!

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Kendall Delayne | Is it nap time yet?FiorellaLiaSharTracy @ Cleland Clan Recent comment authors
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Kendall Delayne | Is it nap time yet?
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How awesome!! My husband and I want to go hike part of the Smokey Mountains soon while we live on this side of the country. May have to check this one out if we get stationed back over there!

Fiorella
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Fiorella

What an exciting adventure! Just waiting for our children to get a bit older so we all can enjoy a trail like this one. So much to see and enjoy together!

Lia
Guest

Wow, what a trek! We just drove through the Redwoods and I am wishing I saw this before we left! Long hikes are always the ones that leave lasting memories and stories to tell!

Shar
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Shar

Thanks for the info! I love nature hikes & this place is so tempting to visit!!

Tracy @ Cleland Clan
Guest

This is a great guide for anyone who is thinking of hiking this trail. I’m pinning it for later–I’ve always wanted to visit the redwoods!

Sarah Dean
Guest

What a beautiful hiking trail! I’d love to do another multi-day hike someday but would definitely need to work up to it as it’s been a looooong time since my last one. 😀