Skyline 50k is a legendary race nestled in the East Bay Regional Parks of California, renowned for its challenging yet scenic course that winds through lush trails and up to Skyline Gate. Starting and finishing at Lake Chabot Marina, this classic event offers runners significant elevation gain amidst stunning natural beauty. The race has earned its reputation as an ideal first 50k due to its well-supported aid stations manned by enthusiastic groups such as the Dusty Bottoms and Running for a Better Oakland. Volunteers like the Volunteer Safety Patrol appear unexpectedly at key points along the route, ensuring runners stay on course while cheering them on. Whether you're aiming for a podium finish or simply looking to complete the distance with pride, Skyline delivers an unforgettable experience. The event is not only competitive but also celebratory in spirit, making it a highlight of many runner's calendars. On race day, August 1, 2027, participants will gather at Lake Chabot Marina for a morning start. Pre-race briefings begin early to prepare runners for the challenging yet rewarding journey ahead. All finishers receive commemorative gear including shirts and medals, while top overall winners and age group leaders take home additional awards. For those interested in exploring more of what Northern California's trail running community has to offer, Skyline 50k is part of Scena Performance’s portfolio of beloved races that include the Dick Collins Firetrails and Bay Area 100. These events are designed not just as tests of endurance but also transformative experiences that leave participants with lasting memories. Join the thousands who return year after year to tackle this iconic course, surrounded by nature's splendor and a supportive community. See you at Lake Chabot! Every finisher will enjoy BBQ post-race, celebrating their achievement under the warm California sun.
Races Offered
50K
Aug 01, 2027
straighten
Distance —
50K
terrain
Type —
Running
timer
07:00
sell
$155.00
21K
Aug 01, 2027
straighten
Distance —
21K
terrain
Type —
Running
timer
08:30
sell
$90.00
Weather History
These values represent the 3-year monthly averages for August in Castro Valley.
thermostatTemperature
13.9° / 23.0°
wb_sunnyFeels like
13.3° / 21.0°
light_mode
Avg sunshine hours
11h 50m
water_drop
Avg rainfall
0.1 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
10.3 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
High (7.0)
humidity_mid
Humidity
77.4%
wb_twilight
Sunrise
06:24
nightlight
Sunset
19:58
About Castro Valley
Learn more about the host city, Castro Valley.
Castro Valley is a census-designated place (CDP) in Alameda County, California, United States. At the 2020 census, it was the fourth most populous unincorporated area in California. The population was 66,441 at the 2020 census.