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Big Basin Skyline To Sea 50K



29.8 mile 48.0 kilometer point to point
85% Runnable


Ascent: 4,786' 1,459 m
Descent: -7,357' -2,242 m
High: 2,612' 796 m
Low: 40' 12 m


Avg Grade: 8% (4°)
Max Grade: 67% (34°)


No Dogs
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Trail shared by Rodolfo Camacho

A great 50k race through the redwoods.

Rodolfo Camacho

Features Birding · River/Creek · Views

Be courteous. Follow the rules of hiking. Help your fellow runners. STOP if you see someone injured - a PR won't give you the same satisfaction as helping someone else.


This race features some of the most beautiful views of California with nice panoramas, red oaks, and plenty of moments to rest in the shade. Hike or run, this is a must-do of the South Bay.

Need to Know

Bring enough water (1L for a 5'7" 162lbs guy). I ran with 700ml, and I definitely needed the extra water. Don't forget to bring salt pellets. They are provided in the event, as snacks of other kinds. Be sure to start all the way in the front, if you don't want to be slow down for almost 20 min at the beginning. The trails are narrow and difficult to accommodate more than two people across.

Runner Notes

Close to the sea, there are multiple areas with no shade. Bring enough water.


The race starts on the intersection of Route 30 and 9, close to the Saratoga Open Space Preserve around 9 am. For a race, it is a bit late, though the beginning it is completely within the canopy and the fresh air of the forest. It goes through the whole Big Basing Trail.

Highlights of the trail include the huge redwoods, a total elevation gain of ~4000ft, and a finish line with the view of the ocean. Runners will cross forests, creeks, and semi-arid terrain (all the way to the top) and exposed conditions, and will enjoy views of the ocean and a pleasant run under the shaded canopy of the forest. The course has a total of 3 main nourishment/check-in camps. The last checkpoint is a bit far spaced about 8 miles apart from the last. The conditions make this point a bit harder to achieve.

Bring at least enough containers for 1L, and don't forget to consume salt pellets in every station.

Flora & Fauna

Poison oak is common.


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Oct 7, 2017

Trail Ratings

  4.5 from 2 votes


in Saratoga


  4.5 from 2 votes
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26 Views Last Month
928 Since Jun 8, 2017



Duck under a blowdown covered in beautiful shelf fungi
Jan 5, 2018 near Boulder…, CA
Hollowed out tree towards the start of the Skyline to Sea Trail
Jan 5, 2018 near Boulder…, CA
Coastal Redwoods on Meteor Trail
Dec 25, 2018 near Boulder…, CA
The Skyline to the Sea Trail hosts a fantastic view of Waddell Beach.
Jan 26, 2017 near Brookdale, CA
Pretty skies.
Sep 27, 2018 near Saratoga, CA
Look back from Hihn Hammond Road to experience great views of the McCrary Ridge Trail and the Pacific Ocean.
Feb 2, 2017 near Boulder…, CA