
About the event
Join the historic Skyline 50K Endurance Run on August 3, 2025, in Castro Valley, California, for a challenging trail ultramarathon with about 1,481 meters (4,858 feet) of elevation gain. The course navigates a large loop through East Bay Regional Parks, reaching as far as Skyline Gate, and is known for its supportive aid stations staffed by local running groups. Organized by Scena Media & Scena Performance, the event is celebrated for its post-race plant-based BBQ and beer at Lake Chabot Marina, creating a festive atmosphere for participants and their families. Recognized as a UTMB Index Race and part of the Pacific USATF Grand Prix, the Skyline 50K caters to both first-time ultrarunners and seasoned athletes seeking a competitive race.
Date:
Sun
Aug 3
2025
Location:
Distance:
Elevation profile:
Hilly
Website:
LinkElevation gain:
Number of participants:
Find the best training plan for your goals and the distance you’re planning to run:
Stories from Runnas
The Skyline 50K Endurance Run, scheduled for August 3, 2025, in Castro Valley, California, is one of the state's oldest trail ultramarathons, featuring approximately 1,481 meters (4,858 feet) of elevation gain. Organized by Scena Media & Scena Performance, this race offers a scenic loop through East Bay Regional Parks, starting and finishing at Lake Chabot Marina.
If you are an official race organiser with any questions about this page, please get in touch: races@runna.com
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