September Races within 50 miles of Greeley, CO
Thornton, CO
RMRR Fall Marathon Training Series
Aug 27, 2023
Sep 24, 2023
Sep 10, 2023
RMRR Trophy Series - September
Sep 8, 2024
Greeley, CO
Superhero Event
Sep 21, 2024
Denver, CO
Blue Shoe Run for Prostate Cancer
Sep 9, 2023
9/11 Heroes Run
Sep 10, 2023
Sentir Venezolano 5K Walk / Run
Sep 17, 2023
Roadrunners 5K
Sep 30, 2023
Roost Rebellion Relays
Sep 4, 2024
Sloan's Lake Search Party (SLSP)! Marathon Hourly Loop Race
Sep 7, 2024
Denver Rocks Run 5K/10K
Sep 8, 2024
Colorado Brewery Running Series
Sep 14, 2024
Denver 5K
Sep 14, 2024
Nun Run
Sep 15, 2024
Move Forward 5K & 10K
Sep 21, 2024
Cheyenne, WY
Cheyenne Schools Foundation - Run for 1
Sep 14, 2024
Aurora, CO
RexRun For PAWSitivity 5K Trail Run/Walk
Sep 7, 2024
SheSprints
Sep 7, 2024
OCA Panda Run
Sep 21, 2024
Louisville, CO
Louisville Trail Race
Sep 28, 2024
Broomfield, CO
Jag Jog 5K
Sep 14, 2024
Miner Gold Rush
Sep 28, 2024
Runway 5K Run for the Angels
Sep 28, 2024
Arvada, CO
Lisa Nelson's Mustang Stampede
Sep 16, 2023
Run With The Wolves
Sep 17, 2023
Forge 5K
Sep 30, 2023
Estes Park, CO
Rut Run 5K
Sep 28, 2024
Boulder, CO
South Boulder Creek parkrun
Mar 22, 2025
Mar 29, 2025
Apr 6, 2024
Apr 13, 2024
48 more
Harvest Moon Long Course Triathlon
Sep 7, 2024
Boulderthon: Downtown Boulder Marathon
Sep 29, 2024
Brighton, CO
Gummball 5K
Sep 16, 2023
Adams Half & 5K
Sep 17, 2023
Lafayette, CO
Waneka Classic
Sep 9, 2023
Wheat Ridge, CO
Farmers 5000
Sep 15, 2024
Windsor, CO
Windsor Wiesn Mile and 5 Mile
Sep 23, 2023
Bellvue, CO
Black Squirrel Half Marathon
Sep 7, 2024
Commerce City, CO
Night Nation Run - Denver
Sep 28, 2024
Fort Collins, CO
Beef Sticks for Backpacks 5K Run/Walk
Sep 24, 2023
Fall Equinox Marathon
Sep 22, 2024
Frederick, CO
Miner's Day 5K
Sep 16, 2023
La Salle, CO
Cerus Fitness Festival
Sep 14, 2024
Jamestown, CO
Calarat Challenge Trail Running Festival
Sep 3, 2023
Sat | Sun | Mon | Tue | Wed | Thu | Fri | Multiple |
Event Category
Click Here to find out what Classic, Multisport, and Variety mean.
To narrow your search by a distance or event type, you will need to select Classic, Multisport, or Variety first.
To narrow your search by a distance or event type, you will need to select Classic, Multisport, or Variety first.
No | Race Date | Race | Location | Options |
---|---|---|---|---|
1 |
Past Date
Sep 3, 2023
Sunday
|
Calarat Challenge Trail Running Festival
13.1M, 10K, 5K trail run | kids run
More Information
|
Jamestown, CO
42 miles point to point
Boulder County, CO
|
|
2 |
Sep 4, 2024
Wednesday
|
Roost Rebellion Relays
4M relay
More Information
|
Denver, CO
50 miles point to point
Denver County, CO
|
|
3 |
Sep 7, 2024
Saturday
|
Black Squirrel Half Marathon
13.1M trail run
More Information
|
Bellvue, CO
28 miles point to point
Larimer County, CO
|
|
4 |
Sep 7, 2024
Saturday
|
Harvest Moon Long Course Triathlon
half triathlon | half duathlon
More Information
|
Boulder, CO
41 miles point to point
Boulder County, CO
|
|
5 |
Sep 7, 2024
Saturday
|
RexRun For PAWSitivity 5K Trail Run/Walk
5K trail run | kids run
Virtual Option
More Information
|
Aurora, CO
48 miles point to point
Arapahoe County, CO
|
|
6 |
Sep 7, 2024
Saturday
|
SheSprints
sprint triathlon | sprint triathlon relay | sprint duathlon
More Information
|
Aurora, CO
48 miles point to point
Arapahoe County, CO
|
|
Women Only
|
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7 |
Sep 7, 2024
Saturday
|
Sloan's Lake Search Party (SLSP)! Marathon Hourly Loop Race
26.2M, 13.1M run
More Information
|
Denver, CO
50 miles point to point
Denver County, CO
|
|
8 |
Sep 7, 2024
Saturday
|
South Boulder Creek parkrun
5K run
More Information
|
Boulder, CO
41 miles point to point
Boulder County, CO
|
|
9 |
Sep 8, 2024
Sunday
|
Denver Rocks Run 5K/10K
10K, 5K run
More Information
|
Denver, CO
50 miles point to point
Denver County, CO
|
|
10 |
Sep 8, 2024
Sunday
|
Honey Bee Hustle
1.5H run
More Information
|
Loveland, CO
19 miles point to point
Larimer County, CO
|
|
11 |
Sep 8, 2024
Sunday
|
RMRR Trophy Series - September
10M, 5K run
More Information
|
Thornton, CO
41 miles point to point
Adams County, CO
|
|
12 |
Past Date
Sep 9, 2023
Saturday
|
Blue Shoe Run for Prostate Cancer
5K, 1.5M run | kids run
More Information
|
Denver, CO
50 miles point to point
Denver County, CO
|
|
13 |
Past Date
Sep 9, 2023
Saturday
|
Waneka Classic
5K run
More Information
|
Lafayette, CO
36 miles point to point
Boulder County, CO
|
|
14 |
Past Date
Sep 10, 2023
Sunday
|
9/11 Heroes Run - Denver
5K run
More Information
|
Denver, CO
50 miles point to point
Denver County, CO
|
|
15 |
Past Date
Sep 10, 2023
Sunday
|
RMRR Fall Marathon Training Series
30K, 20K run
More Information
|
Thornton, CO
41 miles point to point
Adams County, CO
|
|
16 |
Sep 14, 2024
Saturday
|
All-Out Fall Fest
13.1M, 10K, 5K run
Virtual Option
More Information
|
Westminster, CO
44 miles point to point
Adams County, CO
Jefferson County, CO
|
|
Boston Marathon Qualifier
|
||||
17 |
Sep 14, 2024
Saturday
|
Cerus Fitness Festival
5K obstacle run
More Information
|
La Salle, CO
5 miles point to point
Weld County, CO
|
|
18 |
Sep 14, 2024
Saturday
|
Cheyenne Schools Foundation - Run for 1
5K run
More Information
|
Cheyenne, WY
50 miles point to point
Laramie County, WY
|
|
19 |
Sep 14, 2024
Saturday
|
Colorado Brewery Running Series
5K run
More Information
|
Denver, CO
50 miles point to point
Denver County, CO
|
|
20 |
Sep 14, 2024
Saturday
|
Denver 5K
5K run
More Information
|
Denver, CO
50 miles point to point
Denver County, CO
|
For the love of all that Is good And moisture wicking...
Though we Try To be accurate And On top Of things... Race details can change When we aren't lookin. And once in a while we simply make a mistake.
ALWAYS visit the race's website for the most complete and accurate race information.
ALWAYS visit the race's website for the most complete and accurate race information.