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Running Calendar near Guerneville 2026-2027

Monthly updates for Guerneville

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

Explore the top running races near Guerneville for 2026-2027! We've gathered 15 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons
February 2026
Feb
21
Sa

Beer City Half - Santa Rosa

5 km 10 km Half Marathon
March 2026
Mar
1
Su

Napa Valley Marathon

5 km Half Marathon Marathon
Mar
14
Sa

St. Patrick’s Day 5K - Santa Rosa

5 km
Mar
21
Sa

Napa Valley Trail Marathon

Trail Run 10 km Half Marathon Marathon
April 2026
Apr
11
Sa

Lake Sonoma 100K

Trail Run Half Marathon 50 km 100 km
Apr
12
Su

Calistoga Mountain Run

Trail Run 10 km Half Marathon 35 km 50 km
Apr
18
Sa

Annadel Half Marathon

Trail Run 5 km 10 km Half Marathon
May 2026
May
3
Su

Tails & Trails- Charitable Walk/Run

Trail Run 5 km
May
16
Sa

Windsor Half Marathon - USA

3 mi 6 mi 13 mi
June 2026
Jun
28
Su

Cal Tri La Crema

Triathlon
August 2026
Aug
22-23
Sa - Su

Santa Rosa Marathon

5 km 10 km Half Marathon Marathon
September 2026
Sep
12
Sa

Running Fence Run

5 km 10 km Half Marathon Marathon
October 2026
Oct
10
Sa

Run for Austin's Lungs

5 km
Oct
17
Sa

Sonoma Fall Classic

Trail Run 26 mi 50 mi 100 mi
November 2026
Nov
26
Th

Santa Rosa Turkey Trot

5 km