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Trail Running Calendar near Fremont 2026-2027

Monthly updates for Fremont

Get new running races (and updates) in your inbox every month.

Explore the top trail runs near Fremont for 2026-2027! We've gathered 40 exciting races in the area. Check out our detailed list below to find your next local race.

April 2026
Apr
18
Sa

Woodside Crossover

Trail Run 10 km Half Marathon 35 km 50 km
May 2026
May
9
Sa

Grizzly Peak Trail Run

Trail Run 10 km Half Marathon ... Marathon 50 km
May
9
Sa

Quicksilver Endurance Runs

Trail Run 50 km 100 km
May
10
Su

Trailquake

Trail Run 5 km 10 km Half Marathon
May
16
Sa

Run for Amma

Trail Run 10 km 30 km 50 km
May
30
Sa

Cinderella Trail Run

Trail Run 8 km Half Marathon ... Marathon 50 km
May
30
Sa

San Mateo PAL's 5K

Trail Run 5 km 10 km
June 2026
Jun
6
Sa

Dirt Circus - San Francisco

Trail Run 3 mi 5 mi
Jun
7
Su

Lake Chabot Trail Challenge

Trail Run 3 mi 13 mi
Jun
13
Sa

Bay Area 100

Trail Run 100 mi
Jun
28
Su

The Rock The Loch Half Marathon

Trail Run 5 km 10 km Half Marathon
August 2026
Aug
2
Su

Skyline 50k Endurance Run

Trail Run 50 km
Aug
15
Sa

Redwood (Summer) Trail Run

Trail Run 5 mi 13 mi ... Marathon 50 km
Aug
30
Su

Crystal Springs Trail Run

Trail Run 8 km Half Marathon ... Marathon 50 km
September 2026
Sep
6
Su

Diablo Trail Run

Trail Run 4 mi 10 mi ... 26 mi 50 km
Sep
26
Sa

Dick Collins Firetrails

Trail Run Marathon 50 mi 100 km
October 2026
Oct
31
Sa

Zombierunner Halloween

Trail Run 5 km 10 km Half Marathon Marathon
November 2026
Nov
7
Sa

Mermaid Trail Run - Woodside

Trail Run 3 mi 6 mi ... 13 mi 6 hr
Nov
26
Th

Zoom Turkey Trot

Trail Run 5 km 10 km Half Marathon
December 2026
Dec
6
Su

The Krampus Cross Country

Trail Run 5 km 10 km 9 mi