Date
Sun, 1 Aug 2027
Start
08:30
Venue
Lake Chabot Marina, 17936 Lake Chabot Rd, Castro Valley, CA 94546
Castro Valley, Alameda County
Countdown
August
The short way into a race with 1982 roots: a half marathon loop from Lake Chabot Marina, with a later start than the 50K runners.
Create a free training plan for the Skyline 50K Endurance Run 21 km
7-day free trial, no card required
The course
The route
Castro Valley
Distance21km
StartElevation
0 kmDrag map to rotate21.0 km
Weather
Early-August, Castro Valley
29°CTypical high
12°CTypical low
8°CColdest in 20 years
0%Days with rain
Highs around 29°C and lows around 12°C, but it has dropped to 8°C. Rain on 0% of days.
NASA POWER data, 2006-2025, the week either side of race day
2026 results
Who finishes, and how
#RiderTimeAvg speed
01Mollie D'Arcy Rice01:31:0413.9 km/h
02Michelle Kim01:59:0010.6 km/h
03Candice Lai02:01:0110.5 km/h
30
Women finishers
2:44:22
Median time
7.7 km/h
Median speed
Women · 2026 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
Training
Training for the Skyline 50K Endurance Run 21 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Skyline 50K Endurance Run 21 km plan targets
Typical sessions
21 km
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Skyline 50K Endurance Run 21 km plan.
7-day free trial, no card required.
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