2027 Lake Chabot Trail Challenge (Half Marathon & 5K)
Sun, Jun 6, 2027 · in 7 months Castro Valley, CA
Half marathon5K
Race website & registration Your chances
Where would you finish?
Enter your race pace or connect Strava, and raceIQ compares you with this race's past finishers in your age group and gender.
See your predicted place7th
of ~140
Age group
Finish times
From the 2026 results.
| Distance | Finishers | Winner | Top 5% | Top 25% | Median |
|---|---|---|---|---|---|
| Half marathon | 155 | 1:35:02 | 1:42:35 | 2:02:32 | 2:24:53 |
| 5K | 230 | 19:06 | 24:48 | 31:08 | 36:09 |
Field strength
5KCasual
Faster up front than 17% of the 5K races we track, based on 659 finishers over 3 editions.
Half marathonCasual
Faster up front than 19% of the half marathon races we track, based on 412 finishers over 3 editions.
Finishers by year
| Year | 5K | Half marathon |
|---|---|---|
| 2026 | 230 | 155 |
| 2025 | 223 | — |
| 2024 | 206 | 138 |
| 2023 | 170 | 119 |
| 2022 | 202 | 113 |
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