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Running Calendar near Los Altos 2026-2027

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Explore the top running races near Los Altos for 2026-2027! We've gathered 111 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons
April 2027
Apr
3
Sa

Sierra Azul Trail Challenge

Trail Run 5 km 7 mi ... 26 mi 50 km
Apr
4
Su

UMS Music Fun Run

5 km
Apr
17
Sa

Lake Chabot Trail Run

Trail Run 2 mi 5 mi ... 26 mi 31 mi
Apr
17
Sa

Badger Cove Half Marathon

Trail Run 3 mi 6 mi 13 mi
Apr
17-18
Sa - Su

Island Running Festival

3 mi 5 mi 6 mi 13 mi
Monthly updates for Los Altos

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Apr
17
Sa

Mud Factor - Livermore

Obstacle Run 5 km
Apr
17
Sa

Woodside Crossover

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

Santa Cruz Westside Half Marathon

5 km 10 km Half Marathon
Apr
24
Sa

Horseshoe Lake Trail Run

Trail Run 5 mi 13 mi ... 26 mi 31 mi
Apr
24
Sa

No Foolin' Foot Race

Trail Run 5 km 10 km 15 km
Apr
24
Sa

Hacienda Hills Trail Run - Spring

Trail Run 5 km 10 km ... Marathon 50 km
Apr
24
Sa

Outlast San Jose

Trail Run Backyard Ultra 18 mi
May 2027
May
2
Su

Foster City 5k

5 km
May
8
Sa

She.is.beautiful Santa Cruz 5k and 10k

5 km 10 km
May
8
Sa

Quicksilver Endurance Runs

Trail Run 50 km 100 km
May
9
Su

Trailquake

Trail Run 3 mi 7 mi 13 mi
May
15
Sa

Girls on the Run Silicon Valley Spring 5K

5 km
May
16
Su

Foster5K + Kids Dash

5 km
May
22
Sa

Run for Amma

Trail Run 10 km 30 km 50 km
May
22
Sa

Island Splash and Dash - Alameda

Aquathlon Sprint 0.5 mi 5 km
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