Race Calendar in California, United States

2026 Humboldt Redwoods Marathon, Half Marathon, 5K

Weott, California, United States

11 Oct, 2026 (Sun)

$40.00 - $105.00

Running

Half-Marathon 5K Marathon

Champion Mine Trail Race

Nevada City, California, United States

11 Oct, 2026 (Sun)

$35.00 - $65.00

Running

Half-Marathon 10K 5K

Bike to Hope 2026

Petaluma, California, United States

16 Oct, 2026 (Fri)

Free

Cycling

Ultra 16.1K

Fat Tire Classic Mountain Bike Race

Springville, California, United States

17 Oct, 2026 (Sat)

$55.00

Cycling

12.9K 25.7K 38.6K

Springville Apple Run

Springville, California, United States

17 Oct, 2026 (Sat)

$15.00 - $40.00

Running, Walking

5K 10K 3.2K 1K

The Jackalope Lope

Redding, California, United States

17 Oct, 2026 (Sat)

$65.00 - $90.00

Trail running

13.7K 33K Ultra

MPSF Open Water Championships - Masters/Open 5 Kilometer and 1 Kilometer Open Water Swim

Long Beach, California, United States

17 Oct, 2026 (Sat)

$75.00

Swimming

5K

Back to the Future: 88 MPH Dash 5K, 10K & Half

Canoga Park, California, United States

17 Oct, 2026 (Sat)

$34.99

Running

5K 10K Half-Marathon

The Donut Fun Run 2026!

Alameda, California, United States

17 Oct, 2026 (Sat)

$39.00

Running

5K

Ruff Run California

Phelan, California, United States

17 Oct, 2026 (Sat)

$50.00 - $70.00

Obstacle race

4K 1K

Palm Springs Tram Road Challenge

Palm Springs, California, United States

17 Oct, 2026 (Sat)

$39.00 - $55.00

Running

6K

Advanced Sailing October 17 US Sailing 101

San Diego, California, United States

17 Oct, 2026 (Sat)