Sunday, Aug 6, 2023

Skyline 50k Endurance Run

Lake Chabot Marina

Castro Valley, CA 50K, 21K

This Event Took Place Sun. Aug 6, 2023

Skyline has been selected as an OG Ultra by Ultrarunning Magazine. Learn more!


Check out the photos from 2025, thanks to Bryan Walker Ting!

Welcome

It's with great, great sadness that we recognize the loss of Ken Gregorich, a great runner and former race director. Join us in dedicating the 2026 race to Ken's memory.

Skyline is one of the oldest continuously running 50k races in the United States — and one of the best days of the year.

The course starts and finishes at Lake Chabot Marina, winding through a big loop in the East Bay Regional Parks all the way up to Skyline Gate. It's a classic for a reason: beautiful trails, significant climbing, and a finish line that feels genuinely earned.

Skyline has a well-earned reputation as the perfect first 50k. The volunteer support here is something special — groups like the Dusty Bottoms, Running for a Better Oakland, Lake Merritt Joggers and Striders, and the Pamakids bring real energy to every aid station. The Volunteer Safety Patrol appears like a flash mob at key intersections, keeping you on course and cheering you on.

Whether you're racing for a podium spot or out there to finish strong and have a great day, Skyline delivers. It's fast and competitive at the front, and a genuine celebration everywhere else. Either way, you'll be talking about this one all year.

See you at the Marina — and yes, there will be BBQ.

Download the Skyline 50k Athlete Guide!

Download the Skyline Half Athlete Guide!
To whet your appetite, here's a flyover of the course (click the triangle button.)

Download the 50k GPX

Download Half Marathon GPX

Schedule

Saturday, July 25 — Digital Race Briefing, 7:00 PM
Join us on Zoom and Facebook Live. Links go out to all registered runners in advance.

Saturday, August 1 — Bib Pickup, 4:00–6:00 PM (not mandatory)
Sports Basement Berkeley, 2727 Milvia St, Berkeley, CA 94703
Pick up for yourself or a friend — your bib comes with a Sports Basement shopping discount. Can't make it? No problem. Bibs are available race morning.

Sunday, August 2 — Race Day
Lake Chabot Marina, 17936 Lake Chabot Rd, Castro Valley, CA 94546
> 5:00 AM Gates open at Lake Chabot
> 5:45 AM Race day bib pickup opens
> 6:55 AM Pre-race briefing
> 7:00 AM 50k Start
> 8:30 AM Half Marathon Start

Swag and Awards

Every finisher receives a race shirt, special Skyline socks, and a finisher's medal. Overall winners and age group leaders (3 deep) take home awards.

USATF Grand Prix and UTMB

Skyline 50k is part of the P-USATF Grand Prix. Both the 50k and half marathon are also UTMB Index races.

Refunds and Other Policies

We generally don't offer refunds. More than 30 days out, you can defer to a future year or transfer to another Scena race. Inside 30 days, no deferrals are available. For full details — including our policy on natural disasters — visit the Policies page o

About Scena Performance

Scena Performance produces some of the most beloved trail races in Northern California — including Skyline 50k, Dick Collins Firetrails, Calistoga Mountain Run, and Bay Area 100. Our goal is simple: take you somewhere beautiful, surround you with great people, and send you home with a story worth telling.

See you out there.
#enjoythejourney

Event's current local time: 9:00 AM PT

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