Redtail Ridge - Lake Chabot | Castro Valley, CA, United States

About the Event

Lake Chabot Regional Park was established in the 1960s after the reservoir had been closed to recreational use for 91 years. Today, the lake remains as an emergency water supply and is open to fishers and boaters, as it is filled with trout, catfish, bass, crappie, and other fish.

With eucalyptus forests, grassy meadows, lakeside paths, and hill top vistas, Lake Chabot offers over 20 miles of hiking trails, which connect to the additional 70 miles of trails in adjoining Anthony Chabot Regional Park making it a spectacular place to run and also very accessible.

This is one of our typically faster races with less elevation and some paved sections. The course is designed for those who are looking to PR and those who are less competitive and/or just embarking on trail racing.

Races Offered

30K

Feb 21, 2026

straighten

Distance — 18.9 Miles

terrain

Type — Running

timer

08:30

sell

0.00

50K

Feb 21, 2026

straighten

Distance — 31.4 Miles

terrain

Type — Running

timer

08:30

sell

0.00

Half Marathon

Feb 21, 2026

straighten

Distance — 13.1 Miles

terrain

Type — Running

timer

08:45

sell

0.00

10K

Feb 21, 2026

straighten

Distance — 6.4 Miles

terrain

Type — Running

timer

09:00

sell

0.00

5K

Feb 21, 2026

straighten

Distance — 3.1 Miles

terrain

Type — Running

timer

09:15

sell

0.00

Weather Overview

These values represent the 3-year monthly averages for February in Castro Valley.

Temp (°C)

Feels Like (°C)

thermostat 6.1° / 14.2°

wb_sunny 3.1° / 11.6°

Wind (km/h)

Humidity (%)

air 9.9 /

water_drop 80.7%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 6.1° / 14.2°

wb_sunny 3.1° / 11.6°

air 9.9 km/h

water_drop 80.7%

About Castro Valley

Learn more about the host city, Castro Valley.

Castro Valley is an unincorporated town in the inner East Bay in the Bay Area of California. It has a population of about 60,000 and is located north of Hayward and east of San Leandro and south of the Oakland hills. Since it is unincorporated, Castro Valley is governed by the County of Alameda, which has its county seat in Oakland.