Welcome! Skyline is one of the oldest continuously running 50Ks in the United States, with results going back to 1982. Thousands of runners have had their first ultra here, folks like former race director Ken Gregorich and course record holder Yiou Wang. Many have come back year after year, like Charles Savage, who ran the first Skyline and just completed his 25th! Now, it's your turn. Take your place in history.
2 events: 50K and Half Marathon. Both are UTMB Index races, and the 50K is part of the Pacific USATF Grand Prix.
Both races start and finish at Lake Chabot Marina, 17936 Lake Chabot Rd, Castro Valley. Registration is only on UltraSignup.
Plus UltraSignup taxes and fees. Aid stations and cutoffs are in the Athlete Guide.
Plus UltraSignup taxes and fees. Aid stations and cutoffs are in the Athlete Guide.
Skyline is a great first 50K, and that's mostly because of who shows up. Bay Area running clubs run the aid stations. The Volunteer Safety Patrol appears like a flash mob at key intersections to point the way and cheer you on. Volunteer ham radio operators handle all our communications, so somebody always knows where you are.
It all ends back at the Marina with plant-based BBQ and beer. Bring the family. Skyline is a plant-based race. Plants are cool.
You'll get a race shirt, Skyline socks, and a finisher's medal. We give awards to the overall winners and three deep by age group.
Skyline has been a lot of people's first ultra. Thousands of runners have started their trail careers at Lake Chabot.
We've always had a rookie award (we just never kept very good records of it). This year we added something more. We came up with it at the finish line with Carola, Ken's wife and his co-race director.
The top two men and top two women in the 50K who are running their first ultra win a GoldKen ticket, which is an entry into the Dick Collins Firetrails 100K.
Named for Ken Gregorich, former Skyline race director and a Skyline rookie himself.
The Athlete Guides have everything: course maps, turn-by-turn directions, aid stations, cutoffs, and driving directions for stations where crew and spectators can meet you.
Training runs are free and self-supported. We post dates on the Scena Strava club in the spring.
The 50K is part of the Pacific USATF Grand Prix. Both races are UTMB Index events.
Generally, we don't offer refunds. More than 30 days out, you can defer to next year. Inside 30 days, no deferrals. Full policies, including natural disasters.
Two ways to get on this page: run fast, or keep coming back. The course has changed over four decades. Rob Anex set the men's record in 1985 on the original point-to-point course, so think of these as marks to chase, not exact comparisons.
| # | Name | Time | Year |
|---|---|---|---|
| 1 | Rob Anex | 3:23:29 | 1985 |
| 2 | Chris Vizcaino | 3:26:12 | 2015 |
| 3 | Ryan Neely | 3:27:12 | 2015 |
| 4 | Rod Farvard | 3:28:15 | 2015 |
| 5 | Leor Pantilat | 3:32:05 | 2012 |
| 6 | Tom Johnson | 3:32:37 | 1997 |
| 7 | Dan Williams | 3:33:45 | 1982 |
| 8 | Joe Margan | 3:34:01 | 1984 |
| 9 | Jim Howard | 3:34:19 | 1984 |
| 10 | Bob Cooper | 3:35:06 | 1982 |
| # | Name | Time | Year |
|---|---|---|---|
| 1 | Yiou Wang | 3:53:28 | 2014 |
| 2 | Kimberly O'Donnell | 4:05:16 | 2015 |
| 3 | Yiou Wang | 4:07:59 | 2017 |
| 4 | Danielle Widenmann | 4:14:38 | 2009 |
| 5 | Kristina Randrup | 4:16:44 | 2021 |
| 6 | Elizabeth Vitalis | 4:17:30 | 1999 |
| 7 | Amanda Wiggenhorn | 4:18:49 | 2023 |
| 8 | Mary Churchill | 4:22:15 | 2003 |
| 9 | Devon Yanko | 4:22:24 | 2015 |
| 10 | Katharin Gustafson | 4:24:52 | 1988 |
These are the folks who keep coming back. Every five finishes earns a special award at the finish line. Numbers are 50K finishes and the last year run.
Every Skyline result on UltraSignup. Multi-year finishers are listed under Legends. Photos: 2026 by Esther Ramos · 2025 by Bryan Walker Ting.
Bay Area 100 Series
Skyline 50K is a Scena Performance race and part of the Bay Area 100 Series, alongside Dick Collins Firetrails and the Bay Area 100.
Scena Performance makes trail races in Northern California. We want every race to take you somewhere beautiful, put you around good people, and send you home with a story worth telling. Experiences matter.
Bay Area 100 · June · 100 miles through the East Bay Regional Parks, a Western States qualifier. bayarea100.com
Skyline 50K · August · 50K and Half from Lake Chabot.
Dick Collins Firetrails · September · 100K, 50-Mile, and Marathon. firetrailsultra.com
In the press · Named an Old School Ultra by UltraRunning Magazine (2026). Featured in UltraRunning's "The Spirit of Skyline" (November 2022).
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