Endurance Grid lists 11 races in Westminster, Colorado, from September 2026 to July 2027.
11
Races
1
Sport
The race calendar
Racing in Westminster
The Westminster race calendar is busiest in September, October, and December. Every race here is a running event, so there's usually one near you. You'll see distances like 5K, 10K, Half Marathon, 1 Mile, and 15K, along with other popular distances.
Weather on race day varies by time of year, so it lives where it’s accurate — each race page shows that race’s typical high, low, and rain chance from NOAA climate normals for its venue and date.
Population
115,546
as of 2023
City Elevation
5,551 ft
Nearest Airport
DEN
Denver International Airport
Time Zone
Mountain Time
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Races in Westminster, CO
Explore and filter upcoming endurance races in Westminster, Colorado on the map below — by sport, distance, price, or month.
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11 races in Westminster
September 2026 Westminster, Colorado Races
2 upcoming races in Westminster, Colorado in September.
Sep
5
Sat
Running
Golden Harvest Half Marathon & 5k/10k - Denver
Parking Lot South of The Westin Westminster, Westminster, CO
1 Mile · 5K · 10K · Half Marathon
Avg 86° / 55°·5,551 ft city elevation
Avg 86° / 55°5,551 ft city elevation
Sep
19
Sat
Running
All-Out Fall Fest
10170 Church Ranch Way, Westminster, CO
5K · 10K · Half Marathon
Avg 80° / 48°·5,551 ft city elevation
Avg 80° / 48°5,551 ft city elevation
October 2026 Westminster, Colorado Races
2 upcoming races in Westminster, Colorado in October.
Oct
3
Sat
Running
Big Waves Family Superhero 5K run/walk
397 W 148th Ave, Westminster, CO
5K
Avg 73° / 42°·5,551 ft city elevation
Avg 73° / 42°5,551 ft city elevation
Oct
11
Sun
Running
Westy Half & 5k
10600 Westminster Blvd, Westminster, CO
5K · Half Marathon
Avg 69° / 38°·5,551 ft city elevation
Avg 69° / 38°5,551 ft city elevation
December 2026 Westminster, Colorado Races
2 upcoming races in Westminster, Colorado in December.
Dec
5
Sat
Running
All-Out Fa La La
10170 Church Ranch Way, Westminster, CO
5K · 10K · Half Marathon
Avg 49° / 21°·5,551 ft city elevation
Avg 49° / 21°5,551 ft city elevation
Dec
6
Sun
Running
Candy Cane Course - Denver
Westfield Village Park, Westminster, CO
1 Mile · 5K · 10K · 15K
Avg 49° / 20°·5,551 ft city elevation
Avg 49° / 20°5,551 ft city elevation
February 2027 Westminster, Colorado Races
1 upcoming race in Westminster, Colorado in February.
Feb
6
Sat
Running
Westy Winter Waggle 5&10k
10600 Westminster Blvd, Westminster, CO
5K · 10K
Avg 48° / 19°·5,551 ft city elevation
Avg 48° / 19°5,551 ft city elevation
March 2027 Westminster, Colorado Races
1 upcoming race in Westminster, Colorado in March.
Mar
13
Sat
Running
Erin Go Bragh 7.77k
10600 Westminster Blvd, Westminster, CO
8K / 5 Mile
Avg 57° / 28°·5,551 ft city elevation
Avg 57° / 28°5,551 ft city elevation
April 2027 Westminster, Colorado Races
1 upcoming race in Westminster, Colorado in April.
Races in Westminster run throughout the year rather than in a single fixed season. Of the upcoming races on Endurance Grid's Race Calendar, the most are in September and October.
What race distances can you find in Westminster?+–
Upcoming races in Westminster cover distances including 1 Mile, 5K, 8K / 5 Mile, 10K, 15K, 10 Mile, and Half Marathon.