Mill Valley close

Half Marathon Calendar near Mill Valley 2026-2027

Monthly updates for Mill Valley

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

Explore the top half marathons near Mill Valley for 2026-2027! We've gathered 39 exciting races in the area. Check out our detailed list below to find your next local race.

May 2026
May
16
Sa

Wildcat Half Marathon

Trail Run 5 km 10 km Half Marathon
May
23
Sa

China Camp Trail Run

Trail Run 3 mi 6 mi 13 mi
May
30
Sa

Nitro Trail

Trail Run 5 km 10 km Half Marathon
May
30
Sa

Cinderella Trail Run

Trail Run 8 km Half Marathon ... Marathon 50 km
June 2026
Jun
7
Su

Lake Chabot Trail Challenge

Trail Run 3 mi 13 mi
Jun
26-29
Fr - Mo

The Rock The Loch Half Marathon

Trail Run 5 km 10 km Half Marathon
Jun
28
Su

Mare Island Half Marathon

5 km 10 km Half Marathon
July 2026
Jul
11
Sa

Beer City Half Alameda

5 km 10 km Half Marathon
Jul
18
Sa

Bad Bass - Castro Valley

5 km 10 km Half Marathon
Jul
18
Sa

Muir Woods Mountain Challenge

Trail Run 10 km Half Marathon 30 km
Jul
25-26
Sa - Su

Napa to Sonoma Half Marathon

5 km Half Marathon
Jul
25-26
Sa - Su

The San Francisco Marathon

5 km 10 km Half Marathon Marathon
August 2026
Aug
1
Sa

Summer Breeze

5 km 10 km Half Marathon
Aug
15
Sa

Redwood (Summer) Trail Run

Trail Run 5 mi 13 mi ... Marathon 50 km
September 2026
Sep
12
Sa

Berkeley Trail Adventure

Trail Run 6 mi 13 mi 22 mi 31 mi
Sep
20
Su

Island Running Festival

5 km 10 km Half Marathon
November 2026
Nov
1
Su

Golden Gate Half Marathon

5 km Half Marathon
Nov
7
Sa

Lake Chabot Trail Run

Trail Run 8 km Half Marathon ... Marathon 50 km
Nov
14-15
Sa - Su

Berkeley Half Marathon

5 km 10 km Half Marathon