2025 - The Rock the Loch 5K/10K/Half Marathon (LIVE or Virtual)
2025 distances
Running
The Rock the Loch Half Marathon (VIRTUAL)
The Rock the Loch 10K (VIRTUAL)
The Rock the Loch 5K (VIRTUAL)
Trail running
The Rock the Loch Half Marathon (LIVE)
The Rock the Loch 10K (LIVE)
The Rock the Loch 5K (LIVE)
Race-day weather
Conditions on June 27, 2025 — historical Open-Meteo data.
The sun rises at 5:48 AM and sets at 8:34 PM local time (PDT) in Castro Valley on June 27, 2025 — 14h 45m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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2025 results — The Rock the Loch 5K/10K/Half Marathon (LIVE or Virtual)
5 finishers across 3 distances · leading places in the The Rock the Loch Half Marathon (VIRTUAL)
| Place | Name | Time | Pace |
|---|---|---|---|
| 1 | Jennifer Flynn | 2:19:05 | 44:46 /mi |
| 2 | Anonymous Anonymous | 3:11:09 | 61:32 /mi |
| 3 | Catherine Southard | 3:41:48 | 71:23 /mi |
Every finisher is on the results page, filterable by distance, gender and age group.
Other races near Castro Valley
Different organizers, within 40 miles, in the next three months
Lake Chabot Trail Run
Brazen New Year's Day
Brazen New Year's Eve
Girls on the Run Bay Area Fall 5K
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 7 Castro Valley events
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