Endurance Grid lists 19 races in Fort Collins, Colorado, from August 2026 to August 2027.
19
Races
4
Sports
The race calendar
Racing in Fort Collins
The Fort Collins race calendar is busiest in October, September, and November. It covers a range of endurance sports — you'll find races in Running, Adventure, SwimRun, and Trail Running — so there's usually a race near you. Distances span a wide range across those sports; you'll see 5K, Half Marathon, Marathon, 1 Mile, and 8K / 5 Mile, 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
169,705
as of 2023
City Elevation
4,989 ft
Nearest Airport
CYS
Cheyenne Regional Jerry Olson Field
Time Zone
Mountain Time
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Races in Fort Collins, CO
Explore and filter upcoming endurance races in Fort Collins, Colorado on the map below — by sport, distance, price, or month.
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19 races in Fort Collins
August 2026 Fort Collins, Colorado Races
1 upcoming race in Fort Collins, Colorado in August.
Aug
30
Sun
Running
T&H RSU TEMPLATE
3074 S Overland Trail, Fort Collins, CO
Avg 83° / 53°·4,989 ft city elevation
Avg 83° / 53°4,989 ft city elevation
September 2026 Fort Collins, Colorado Races
3 upcoming races in Fort Collins, Colorado in September.
Sep
5
Sat
Running
Recovery Run of the Rockies 5K
Fossil Creek Parkway, Fort Collins, CO
5K
Avg 81° / 52°·4,989 ft city elevation
Avg 81° / 52°4,989 ft city elevation
Sep–Oct
13–11
Sun–Sun
Running
Healthy Kids Running Series Fall 2026 - Fort Collins, CO
Kruse Elementary, Fort Collins, CO
Avg 79° / 48°·4,989 ft city elevation
Avg 79° / 48°4,989 ft city elevation
Sep–Oct
20–3
Sun–Sat
Running
Fall Equinox
Poudre Canyon, Fort Collins, CO
8K / 5 Mile · Half Marathon
Avg 76° / 47°·4,989 ft city elevation
Avg 76° / 47°4,989 ft city elevation
October 2026 Fort Collins, Colorado Races
6 upcoming races in Fort Collins, Colorado in October.
Oct
3
Sat
Running
Homecoming 5K - Colorado State University
701 Oval Dr, Fort Collins, CO
5K
Avg 70° / 41°·4,989 ft city elevation
Avg 70° / 41°4,989 ft city elevation
Oct
3
Sat
Running
Mustang Music 5K
Kinard Middle School, Fort Collins, CO
1 Mile · 5K
Avg 69° / 40°·4,989 ft city elevation
Avg 69° / 40°4,989 ft city elevation
Oct
4
Sun
SwimRun
OTILLO Swimrun Colorado
614-624 N Co Rd 23, Fort Collins, CO
Avg 69° / 41°·4,989 ft city elevation
Avg 69° / 41°4,989 ft city elevation
Oct
10
Sat
Running
The Long View Marathon
Edora Park, Fort Collins, CO
5K · Half Marathon · Marathon
Avg 67° / 38°·4,989 ft city elevation
Avg 67° / 38°4,989 ft city elevation
Oct
11
Sun
Running
The Moony Pride 5k
600 N Sherwood St, Fort Collins, CO
5K
Avg 66° / 38°·4,989 ft city elevation
Avg 66° / 38°4,989 ft city elevation
Oct
17–18
Sat–Sun
RunningTrail Running
Blue Sky Trail Marathon & Half Marathon
4780 W County Rd 38e, Fort Collins, CO
Marathon
Avg 64° / 36°·4,989 ft city elevation
Avg 64° / 36°4,989 ft city elevation
November 2026 Fort Collins, Colorado Races
3 upcoming races in Fort Collins, Colorado in November.
Nov
1
Sun
Running
Girls on the Run Northern Colorado Fall 5K
3156 S Overland Trail, Fort Collins, CO
5K
Avg 58° / 31°·4,989 ft city elevation
Avg 58° / 31°4,989 ft city elevation
Nov
7–8
Sat–Sun
Running
Colorado 24 Hour Run
4927 E. County Road 36, Fort Collins, CO
Avg 56° / 29°·4,989 ft city elevation
Avg 56° / 29°4,989 ft city elevation
Nov
26
Thu
Running
Fort Collins Thanksgiving Day Run
147 S College Ave, Fort Collins, CO
4 Mile
Avg 48° / 23°·4,989 ft city elevation
Avg 48° / 23°4,989 ft city elevation
December 2026 Fort Collins, Colorado Races
2 upcoming races in Fort Collins, Colorado in December.
Dec
19
Sat
Running
Sweaty Sweater 5k
4616 S. Shields Street, Fort Collins, CO
1 Mile · 5K
Avg 43° / 18°·4,989 ft city elevation
Avg 43° / 18°4,989 ft city elevation
Dec
31
Thu
Running
Resolution Run - Fort Collins
1801 Riverside Ave, Fort Collins, CO
5K
Avg 44° / 17°·4,989 ft city elevation
Avg 44° / 17°4,989 ft city elevation
March 2027 Fort Collins, Colorado Races
1 upcoming race in Fort Collins, Colorado in March.
Mar
13
Sat
Running
Sharin' O' The Green 5k
Odell Brewing, Fort Collins, CO
5K
Avg 56° / 28°·4,989 ft city elevation
Avg 56° / 28°4,989 ft city elevation
April 2027 Fort Collins, Colorado Races
1 upcoming race in Fort Collins, Colorado in April.
Apr
18
Sun
Running
Horsetooth Half Marathon - Presented by Fort Collins Connexion
Fort Collins, CO
Half Marathon
Avg 63° / 36°·4,989 ft city elevation
Avg 63° / 36°4,989 ft city elevation
May 2027 Fort Collins, Colorado Races
1 upcoming race in Fort Collins, Colorado in May.
May
2
Sun
Running
The Colorado Marathon
301 Maple St., Fort Collins, CO
5K · 10K · Half Marathon · Marathon
Avg 66° / 40°·4,989 ft city elevation
Avg 66° / 40°4,989 ft city elevation
August 2027 Fort Collins, Colorado Races
1 upcoming race in Fort Collins, Colorado in August.
Races in Fort Collins 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 October and September.
What race distances can you find in Fort Collins?+–
Upcoming races in Fort Collins cover distances including 1 Mile, 5K, 4 Mile, 8K / 5 Mile, 10K, Half Marathon, and Marathon.