Skyline 50K Endurance Run

Join the VIRTUAL RACE from now until October 4!

Lake Chabot Marina, Castro Valley, CA

October 4, 2020


The VIRTUAL run is on!


9/21 UPDATE: I have posted revised courses that maximize water coverage. Click on the Course tab above.

After much thought, we have decided to run Skyline 50k 2020 as a virtual run, with a twist. On September 26, we will offer very light support (hydration only) at key spots on the course. There will also be very light marking on the course (ribbons only) that entire weekend.

Otherwise, this is a virtual run, which means you run the course in the East Bay Regional Parks. As old as Skyline is, there are many versions of the course over the years. So you can run the current course under the COURSE tab at the top) or you can run any 50k or half-marathon distance in the parks where Skyline runs and we will give you an official time. This means you can start and finish at any point on the course as well. Maybe you’re Charles Savage and you want to run the very original, point-to-point course from Wildcat Canyon to Lake Chabot. Great! Or maybe you’re Julie Nye and you want to run the old ‘new’ course that goes through Honker Bay. You go, Julie!

To make things easier for our virtual runners, we have created two suggested routes that give the best access to water. Consider this 50k course and this half-marathon course. 

If you’re designing your own course, or want to start a different sport, here’s a helpful page with the Aid Stations that includes driving directions.

To receive that official time, you must provide some kind of proof in Ultrasignup. This can be a picture of your watch or a Strava link or anything.

Schwag and Awards

All runners will receive a race shirt, which you can pick up at times we will post at the Golden Squirrel in Oakland. If you want us to mail your shirt to you, we’re happy to. It’s just a little more expensive to cover the cost of postage and packaging.

Because of the nature of this virtual race, there will be no special finisher or age group awards.

USATF Grand Prix and UTMB

While Skyline 50k is a Grand Prix and UTMB race, the virtual race will not be a part of those series.


2020 Sponsors


Skyline Finish Selects

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  • 50K Ultra Course

    The 50k course continues the flow around the East Shore, outbound to Ten Hills and Brandon via the entrance to the Golf Course. The maps link has maps and turn-by-turn instructions. Email us for a .gpx file if you would find it useful.

  • Half Marathon

    The Skyline Endurance Run Half Marathon is a point-to-point run that starts at Chabot Space and Science Center in Redwood Regional Park. The course intersects with the 50k course on the French Trail and follows the 50k to the finish, passing through Big Bear, Bort Meadow and Grass Valley Aid Stations. For our Virtual Runners who don't want to organize a point-to-point run, click on the MAP and there is a link to an alternate course.

Times, Getting here, Where to stay


7:00 AM


The race will be held at Lake Chabot Marina, starting at 17936 Lake Chabot Rd Castro Valley, CA 94546. This location is a short 20 minute drive from downtown Oakland and approximately 40 minutes from downtown San Francisco.


If you're coming from outside of the Bay Area, there are a number of places to stay near Lake Chabot. Please use this link to see the closest hotels to the starting point.

Awards, Drop bags, Time limit


Awards will be given to the top overall male and female, as well as the fastest male and female finishers in each 10-year age group. We also have special awards to be bestowed upon the first male and female rookie ultramarathoners.


We support drop bags at the Skyline Gate Aid Station, located about halfway through the race. Bring your bag to the start on the morning of the race and we'll transport it to the aid station in time for your arrival. Bags will be returned to the finish after the aid station closes. Please be sure to clearly identify your name and number on your bag.


The time limit is 9 hours. Contact us for early start options if you think you may need more time.

Frequently Asked Questions

Is there a pre-race packet pickup?

Yes! We will have packet pickup from 1 - 6pm at The Golden Squirrel at 5940 College Avenue in Oakland on Saturday, August 3.

Is there race-day pickup and registration?

Yes! We usually have bib pickup open at about 5:30am on race day. We always have a few stragglers that like to register on race day too. Race day registration is $115, so save a few bucks and register when everyone else does!

Are there places where my friends and family can crew or watch?

Most of the aid stations are vehicle accessible. For driving directions go to the Aid Stations page under the Course tab.

Are there finisher awards or medals?

While we do offer a hearty congratulations, along with various race swag items, we strive to emphasize the experience over the medals, and thus devote more energy toward the things that will make the race one to remember, including an elaborate post-run bbq and beer extravaganza where you can connect with your fellow finishers. Awards will be given to the top overall male and female, as well as the fastest male and female finishers in each 10-year age group. We also have special awards to be bestowed upon the first male and female rookie ultramarathoners.

Is there a time limit?

Yes, there is an 9-hour time limit. Intermediate cutoffs are located at Skyline Gate (mi 14.4/11:20 am), and Bort Meadow return (mi 23.3/2 pm). There is a 'soft cutoff' at Big Bear (mi 20.2/ 1pm) to ensure runners are on pace. Please remember the cutoffs are in place so the volunteers can join the post-race festivities. If you feel that you may need additional time, please contact us about early start options.

Do you need volunteers?

Our races depend on the generous spirit of the running community to ensure every participant is well supported. Volunteers will receive a free entry to a future Scena Performance event. Please fill out the volunteer form to indicate your interest and we'll get back to you with more information.

Skyline 50K Endurance Run