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Trail Running Calendar near Westminster 2025-2026

Explore the top trail runs near Westminster for 2025-2026! We've gathered 96 exciting races in the area. Check out our detailed list below to find your next local race.

June 2025
Jun
1
Sunday

Flamingo Day 5K

5 km
Jun
1
Sunday

Stepping Stone

5 km
Jun
1
Sunday

RMRR Trophy Series

4 km
Jun
1
Sunday

Colorado 13er Half Marathon

5 km 10 km 13 mi
Jun
7
Saturday

All-Out Summer Breeze

5 km 10 km 13 mi
Jun
14
Saturday

Barr Lake Trail Race

Trail Run 5 km 15 km ... 30 km 50 km
Jun
14
Saturday

Colorado Deka Fit Road Show

Obstacle Run 5 km
Jun
14
Saturday

Ironman 70.3 Boulder

Triathlon
Jun
14
Saturday

Parker Parks and Recreation Dash Across the Dam Father's Day 5K

5 km
Jun
15
Sunday

Father's Day Classic 10k

5 km 10 km
Jun
21
Saturday

Hometown Half Marathon - Denver

5 km 10 km 13 mi
Jun
21
Saturday

Unicorn 5k - Thornton

5 km
Jun
28
Saturday

Denver Pride 5K

5 km
Jun
29
Sunday

Boulder Sunrise Run

5 km 10 km
July 2025
Jul
4
Friday

HRCA Independence Day 5K

5 km
Jul
4
Friday

Let Freedom Run 10k

5 km 10 km
Jul
11-12
Fr - Sa

Chase the Moon

Backyard Ultra 3 hr 50 km 6 hr 12 hr
Jul
12
Saturday

Cookie Chase

5 km
Jul
12
Saturday

All-Out Dog Days

5 km 10 km 13 mi
Jul
19
Saturday

All American 8 Mile - Denver

4 mi 8 mi
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