Race Discovery
The Rock the Loch 5K/10K/Half Marathon (LIVE or Virtual)
The Rock the Loch 5K/10K/Half Marathon (LIVE or Virtual) logo

2021 - The Rock the Loch 5K/10K/Half Marathon (LIVE or Virtual)

Castro Valley, California, United States View on map
Oct 10, 2021 (America/Los_Angeles local time)
Trail running

2021 distances

Trail running

The Rock the Loch Half Marathon (LIVE)

Oct 10, 2021 5K 8:30 AM
$85.00
Closed

The Rock the Loch 10K (LIVE)

Oct 10, 2021 10K 8:30 AM
$65.00
Closed

The Rock the Loch 5K (LIVE)

Oct 10, 2021 Half-Marathon 8:30 AM
$55.00
Closed

Running

The Rock the Loch Half Marathon (VIRTUAL)

Oct 10, 2021 5K 8:30 AM
$45.00
Closed

The Rock the Loch 10K (VIRTUAL)

Oct 10, 2021 10K 8:30 AM
$40.00
Closed

The Rock the Loch 5K (VIRTUAL)

Oct 10, 2021 Half-Marathon 8:30 AM
$35.00
Closed

Race date Weather

Conditions on October 10, 2021 — historical Open-Meteo data.

Temp (°C)
Minimum temperature (race-day average) 11.1° / Maximum temperature (race-day average) 20.6°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-day average) 11.1° / Maximum feels like — heat index / wind chill (race-day average) 20.6°
Wind (km/h)
Average wind speed (race-day average)
17.5
Precip (mm)
Average precipitation (race-day average)
0.0mm
Humidity
Average relative humidity (race-day average)
75.0%

Course

Route map and elevation profile

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.

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Other races near Castro Valley

Different organizers, within 40 miles, in the next three months

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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