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Obstacle Race Calendar near Duncans Mills 2025-2026

Explore the top obstacle runs near Duncans Mills for 2025-2026! We've gathered 10 exciting races in the area. Check out our detailed list below to find your next local race.

March 2025
Mar
16
Sunday

St. Patrick’s Day 5K - Santa Rosa

5 km
Mar
22
Saturday

Napa Valley Trail Marathon

Trail Run 10 km 13 mi 26 mi
April 2025
Apr
6
Sunday

Annadel Half Marathon

Trail Run 5 km 10 km 13 mi
Apr
12
Saturday

Lake Sonoma 50

Trail Run 50 mi
Apr
13
Sunday

Napa Valley Endurance Run

Trail Run 10 km 13 mi 35 km 50 km
May 2025
May
4
Sunday

Windsor Half Marathon - USA

5 km 10 km 13 mi
May
31
Saturday

Sonoma Coast Trail Runs

Trail Run 13 mi 30 km 26 mi 50 km
June 2025
Jun
22
Sunday

La Crema Cal Tri Sonoma

Triathlon
August 2025
Aug
23-24
Sa - Su

Santa Rosa Marathon

5 km 10 km 13 mi 26 mi
October 2025
Oct
18
Saturday

California Fall Classic at Lake Sonoma

Trail Run 55 km 100 km
Oct
18
Saturday

California Fall Classic East Bay Training Run

Trail Run 55 km 100 km
Oct
18
Saturday

Lake Sonoma 100K / 55K

Trail Run 55 km 100 km
November 2025
Nov
1
Saturday

IPA 10K

3 km 10 km 13 mi
Nov
1
Saturday

Ipa Half Marathon

3 km 10 km 13 km
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