Endurance Grid lists 44 races in Denver, Colorado, from August 2026 to August 2027.
44
Races
3
Sports
The race calendar
Racing in Denver
The Denver race calendar is busiest in September, October, and November. It covers a range of endurance sports — you'll find races in Running, Road Cycling, and Rucking — so there's usually a race near you. Distances span a wide range across those sports; you'll see 5K, 1 Mile, 10K, Half Marathon, and 1K, 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
713,734
as of 2023
City Elevation
5,286 ft
Nearest Airport
DEN
Denver International Airport
Time Zone
Mountain Time
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Races in Denver, CO
Explore and filter upcoming endurance races in Denver, Colorado on the map below — by sport, distance, price, or month.
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44 races in Denver
August 2026 Denver, Colorado Races
1 upcoming race in Denver, Colorado in August.
Aug
28
Fri
Running
D'Evelyn Dash XC
10359 W Nassau Ave, Denver, CO
5K
Avg 83° / 55°·5,286 ft city elevation
Avg 83° / 55°5,286 ft city elevation
September 2026 Denver, Colorado Races
9 upcoming races in Denver, Colorado in September.
Sep
2
Wed
Running
4th Annual Roost Rebellion Relays
Washington Park Boathouse, Denver, CO
5K
Avg 87° / 56°·5,286 ft city elevation
Avg 87° / 56°5,286 ft city elevation
Sep
12
Sat
Running
The Denver 5k
Utica Street & West 17th Ave, Denver, CO
5K
Avg 84° / 52°·5,286 ft city elevation
Avg 84° / 52°5,286 ft city elevation
Sep
13
Sun
RunningRucking
9/11 Heroes Run - Denver, Colorado
Great Lawn Park, Denver, CO
1 Mile · 5K
Avg 83° / 52°·5,286 ft city elevation
Avg 83° / 52°5,286 ft city elevation
Sep
13
Sun
Running
Tiger Prowl 5K
9700 W 8th Ave, Denver, CO
5K
Avg 83° / 52°·5,286 ft city elevation
Avg 83° / 52°5,286 ft city elevation
Sep
13
Sun
Running
31st El Grito 5k (2026)
900 Auraria Parkway, Denver, CO
5K
Avg 83° / 52°·5,286 ft city elevation
Avg 83° / 52°5,286 ft city elevation
Sep–Oct
13–11
Sun–Sun
Running
Healthy Kids Running Series Fall 2026 - Denver, CO
Rosamond Park, Denver, CO
Avg 83° / 52°·5,286 ft city elevation
Avg 83° / 52°5,286 ft city elevation
Sep
19
Sat
Running
Denver: Walk With Autism and Resource Fair
4601 W 46th Ave, Denver, CO
5K · 4 Mile
Avg 80° / 49°·5,286 ft city elevation
Avg 80° / 49°5,286 ft city elevation
Sep
19
Sat
Running
2026 Montbello Alive! 5K
15555 E. 53rd Ave, Denver, CO
5K
Avg 79° / 47°·5,286 ft city elevation
Avg 79° / 47°5,286 ft city elevation
Sep
26
Sat
Road Cycling
Denver Rotary Club Cycling to Serve 2026
8340 E. Northfield Blvd., Denver, CO
Avg 77° / 46°·5,286 ft city elevation
Avg 77° / 46°5,286 ft city elevation
October 2026 Denver, Colorado Races
7 upcoming races in Denver, Colorado in October.
Oct
4
Sun
Running
Liberty Energy 5K - Benefiting the Bettering Human Lives Foundation
2001 Steele Street, Denver, CO
1K · 5K
Avg 73° / 43°·5,286 ft city elevation
Avg 73° / 43°5,286 ft city elevation
Oct
17
Sat
Running
Living Water 5K and Family Fun Run
4601 W. 46th Ave, Denver, CO
5K
Avg 65° / 33°·5,286 ft city elevation
Avg 65° / 33°5,286 ft city elevation
Oct
21
Wed
Running
DU Crimson Classic 5K Run/1.5 Mile Walk
Carnegie Green, University of Denver, Denver, CO
5K
Avg 65° / 36°·5,286 ft city elevation
Avg 65° / 36°5,286 ft city elevation
Oct
24
Sat
Running
Race to Cure Sarcoma Denver
Berkeley Lake Park, Denver, CO
1K · 5K
Avg 64° / 35°·5,286 ft city elevation
Avg 64° / 35°5,286 ft city elevation
Oct
24
Sat
Running
Zedikiah Scholarship 5K
101 Yosemite St, Denver, CO
5K
Avg 63° / 33°·5,286 ft city elevation
Avg 63° / 33°5,286 ft city elevation
Oct
25
Sun
Running
The 14th Annual Odyssey Odyssey - 2026
101 Yosemite Street (Great Lawn Park), Denver, CO
1 Mile · 5K
Avg 64° / 34°·5,286 ft city elevation
Avg 64° / 34°5,286 ft city elevation
Oct
25
Sun
Running
Ghosts and Goblins 5K/10K
City Park, Denver, CO
5K
Avg 64° / 34°·5,286 ft city elevation
Avg 64° / 34°5,286 ft city elevation
November 2026 Denver, Colorado Races
7 upcoming races in Denver, Colorado in November.
Nov
1
Sun
Running
RMRR November 5k/15k
Gateway Rd, Denver, CO
5K · 15K
Avg 62° / 32°·5,286 ft city elevation
Avg 62° / 32°5,286 ft city elevation
Nov
1
Sun
Running
Feet for Justice Run
2001 Colorado Blvd, Denver, CO
5K · 10K
Avg 62° / 32°·5,286 ft city elevation
Avg 62° / 32°5,286 ft city elevation
Nov
7
Sat
Running
City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)
2001 Steele St, Denver, CO
1 Mile · 5K · 10K
Avg 59° / 30°·5,286 ft city elevation
Avg 59° / 30°5,286 ft city elevation
Nov
14
Sat
Running
Denver Veterans Day Run
Denver City Park, Denver, CO
5K · 10K
Avg 57° / 28°·5,286 ft city elevation
Avg 57° / 28°5,286 ft city elevation
Nov
15
Sun
Running
Girls on the Run Denver Metro 5K
Empower Field at Mile High, Denver - The start and finish lines are located west of Parking Lots D and G on Mile High Stadium Circle, Denver, CO
5K
Avg 56° / 28°·5,286 ft city elevation
Avg 56° / 28°5,286 ft city elevation
Nov
21
Sat
Running
Pumpkin Pie 5K/10K
City Park, Denver, CO
5K · 10K
Avg 54° / 26°·5,286 ft city elevation
Avg 54° / 26°5,286 ft city elevation
Nov
26
Thu
Running
Harvesting Hope 5k
Central Park, Denver, CO
5K
Avg 52° / 24°·5,286 ft city elevation
Avg 52° / 24°5,286 ft city elevation
December 2026 Denver, Colorado Races
4 upcoming races in Denver, Colorado in December.
Dec
6
Sun
Running
RMRR December 4.5mi
1100 S Franklin St, Denver, CO
Avg 48° / 21°·5,286 ft city elevation
Avg 48° / 21°5,286 ft city elevation
Dec
13
Sun
Running
2026 Jingle Bell Run - Colorado
701 S Franklin St, Denver, CO
1 Mile · 5K
Avg 47° / 20°·5,286 ft city elevation
Avg 47° / 20°5,286 ft city elevation
Dec
19
Sat
Running
Santa's Dash for Ca$h
Utica Street & West 17th Ave, Denver, CO
5K
Avg 46° / 20°·5,286 ft city elevation
Avg 46° / 20°5,286 ft city elevation
Dec
20
Sun
Running
Ugly Sweater 5K
Washington Park, Denver, CO
5K
Avg 46° / 20°·5,286 ft city elevation
Avg 46° / 20°5,286 ft city elevation
January 2027 Denver, Colorado Races
2 upcoming races in Denver, Colorado in January.
Jan
24
Sun
Running
Freakin Freezin 5K - Denver
Northfield High School, Denver, CO
5K
Avg 49° / 21°·5,286 ft city elevation
Avg 49° / 21°5,286 ft city elevation
Jan
30
Sat
Running
Time Travel Half-Marathon/5K/10K - Denver
TBD, Denver, CO
1 Mile · 5K · 10K · Half Marathon
Avg 48° / 21°·5,286 ft city elevation
Avg 48° / 21°5,286 ft city elevation
March 2027 Denver, Colorado Races
2 upcoming races in Denver, Colorado in March.
Mar
6
Sat
Running
Time to Paddy 5K/10K & Lucky 13.1 13.1 - Denver
TBD, Denver, CO
1 Mile · 5K · 10K · Half Marathon
Avg 54° / 26°·5,286 ft city elevation
Avg 54° / 26°5,286 ft city elevation
Mar
28
Sun
Running
Central Park 5k
8801 Martin Luther King Jr. Blvd, Denver, CO
5K
Avg 62° / 33°·5,286 ft city elevation
Avg 62° / 33°5,286 ft city elevation
April 2027 Denver, Colorado Races
3 upcoming races in Denver, Colorado in April.
Apr
4
Sun
Running
Donut Dash
Washington Park, Denver, CO
5K
Avg 63° / 34°·5,286 ft city elevation
Avg 63° / 34°5,286 ft city elevation
Apr
25
Sun
Running
Unicorn 5k (Denver-East)
Great Lawn Park, Denver, CO
5K
Avg 65° / 38°·5,286 ft city elevation
Avg 65° / 38°5,286 ft city elevation
Apr
25
Sun
Running
DoNot Stop Half Marathon/5K/10K - Denver
TBD, Denver, CO
1 Mile · 5K · 10K · Half Marathon
Avg 65° / 38°·5,286 ft city elevation
Avg 65° / 38°5,286 ft city elevation
May 2027 Denver, Colorado Races
2 upcoming races in Denver, Colorado in May.
May
9
Sun
Running
Denver Mother's Day 5K
3201 17th St, Denver, CO
5K
Avg 70° / 43°·5,286 ft city elevation
Avg 70° / 43°5,286 ft city elevation
May
9
Sun
Running
Hometown Half Marathon/5K/10K - Denver
TBD, Denver, CO
1 Mile · 5K · 10K · Half Marathon
Avg 70° / 43°·5,286 ft city elevation
Avg 70° / 43°5,286 ft city elevation
June 2027 Denver, Colorado Races
2 upcoming races in Denver, Colorado in June.
Jun
6
Sun
Running
Flamingo Day 5K
Sloan's Lake Park, Denver, CO
5K
Avg 83° / 54°·5,286 ft city elevation
Avg 83° / 54°5,286 ft city elevation
Jun
19
Sat
Running
Treat Trot - Denver
TBD, Denver, CO
5K · 10K · 15K
Avg 85° / 53°·5,286 ft city elevation
Avg 85° / 53°5,286 ft city elevation
July 2027 Denver, Colorado Races
2 upcoming races in Denver, Colorado in July.
Jul
10
Sat
Running
Cookie Chase
Sloan's Lake Park, Denver, CO
5K
Avg 92° / 62°·5,286 ft city elevation
Avg 92° / 62°5,286 ft city elevation
Jul
17
Sat
Running
Heatwave Half Marathon/5K/10K - Denver
TBD, Denver, CO
1 Mile · 5K · 10K · Half Marathon
Avg 86° / 59°·5,286 ft city elevation
Avg 86° / 59°5,286 ft city elevation
August 2027 Denver, Colorado Races
3 upcoming races in Denver, Colorado in August.
Aug
1
Sun
Running
Bound for Boston Marathon & Half Marathon - Denver
Races in Denver 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 Denver?+–
Upcoming races in Denver cover distances including 1K, 1 Mile, 5K, 4 Mile, 10K, 15K, Half Marathon, and Marathon.