March Races within 300 miles of Thornton, CO on Saturdays
Thornton, CO
Lucky Dog Dash
Mar 2, 2024
Greeley, CO
Run for Women to Women
Mar 23, 2024
Colorado Springs, CO
Time to Paddy 5K/10K and Lucky 13.1
Mar 2, 2024
5K for St. Patrick's Day
Mar 16, 2024
War Dog Memorial 5K
Mar 23, 2024
Nielson Two Mile Challenge
Mar 1, 2025
Apr 5, 2025
May 4, 2024
Jun 1, 2024
8 more
Steamboat Springs, CO
Luck of the Irish 7K
Mar 16, 2024
Buena Vista, CO
Most Eggcellent 10K, 5K
Mar 30, 2024
Westminster, CO
Erin Go Braugh 7.77K
Mar 15, 2025
Winter Park, CO
Alpenglow Bounce 5K
Mar 9, 2024
Lyons, CO
Lucky Lyons
Mar 9, 2024
Santa Fe, NM
Corrida de los Locos
Mar 2, 2024
Aspen, CO
America's Uphill
Mar 16, 2024
Aspen parkrun
Mar 22, 2025
Mar 29, 2025
Apr 5, 2025
Apr 12, 2025
48 more
Highlands Ranch, CO
HRCA St. Patrick's Day 5K
Mar 23, 2024
Boulder, CO
The Day Quest - Flatirons Vista to Spring Brook
Mar 23, 2024
South Boulder Creek parkrun
Mar 22, 2025
Mar 29, 2025
Apr 5, 2025
Apr 12, 2025
48 more
Windsor, CO
Lucky Brew Race
Mar 16, 2024
Salida, CO
Run Through Time Marathon
Mar 8, 2025
Lakewood, CO
Ram Run 5K
Mar 30, 2024
Fort Collins, CO
Sharin' O' the Green 5K
Mar 16, 2024
CSU International Run for Relief 5K
Mar 23, 2024
Frederick, CO
Cerus DryTri
Mar 2, 2024
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.
1. Nielson Two Mile Challenge
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Mar 1, 2025Saturday
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2M trail run
More Information
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Colorado Springs, CO
72 miles point to pointEl Paso County, CO
2. South Boulder Creek parkrun
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Mar 1, 2025Saturday
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5K run
More Information
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Boulder, CO
19 miles point to pointBoulder County, CO
3. Cerus DryTri
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Past DateMar 2, 2024Saturday
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other triathlon
More Information
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Frederick, CO
16 miles point to pointWeld County, CO
4. Corrida de los Locos
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Past DateMar 2, 2024Saturday
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5M trail run
Virtual OptionMore Information
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Santa Fe, NM
293 miles point to pointSanta Fe County, NM
5. Lucky Dog Dash
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Past DateMar 2, 2024Saturday
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5K run
More Information
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Thornton, CO
Adams County, CO
6. Time to Paddy 5K/10K and Lucky 13.1
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Past DateMar 2, 2024Saturday
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13.1M, 10K, 5K run | kids run
Virtual OptionMore Information
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Colorado Springs, CO
72 miles point to pointEl Paso County, CO
7. Run Through Time Marathon
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Mar 8, 2025Saturday
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2M run | 26.2M, 13.1M trail run | kids run
More Information
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Salida, CO
107 miles point to pointChaffee County, CO
8. South Boulder Creek parkrun
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Mar 8, 2025Saturday
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5K run
More Information
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Boulder, CO
19 miles point to pointBoulder County, CO
9. Alpenglow Bounce 5K
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Past DateMar 9, 2024Saturday
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5K run
More Information
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Winter Park, CO
43 miles point to pointGrand County, CO
10. Lucky Lyons
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Past DateMar 9, 2024Saturday
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10K, 5K run
More Information
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Lyons, CO
29 miles point to pointBoulder County, CO
11. Canyonlands Half Marathon
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Mar 15, 2025Saturday
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13.1M, 5M run
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Moab, UT
259 miles point to pointGrand County, UT
12. Erin Go Braugh 7.77K
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Mar 15, 2025Saturday
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7.8K run
More Information
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Westminster, CO
4 miles point to pointAdams County, COJefferson County, CO
13. South Boulder Creek parkrun
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Mar 15, 2025Saturday
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5K run
More Information
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Boulder, CO
19 miles point to pointBoulder County, CO
14. 5K for St. Patrick's Day
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Past DateMar 16, 2024Saturday
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5K run
More Information
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Colorado Springs, CO
72 miles point to pointEl Paso County, CO
15. America's Uphill
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Past DateMar 16, 2024Saturday
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2.5M run
More Information
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Aspen, CO
109 miles point to pointPitkin County, CO
16. Krueger Family Shamrock Shuffle
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Past DateMar 16, 2024Saturday
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10K, 5K run | kids run
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Vail, CO
76 miles point to pointEagle County, CO
17. Luck of the Irish 7K
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Past DateMar 16, 2024Saturday
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7K run
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Steamboat Springs, CO
107 miles point to pointRoutt County, CO
18. Lucky Brew Race
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Past DateMar 16, 2024Saturday
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15K, 10K, 5K run | kids run
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Windsor, CO
42 miles point to pointWeld County, CO
19. ShamROCK Stampede
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Past DateMar 16, 2024Saturday
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10K, 5K run
More Information
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Castle Rock, CO
35 miles point to pointDouglas County, CO
20. Sharin' O' the Green 5K
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Past DateMar 16, 2024Saturday
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5K run | kids run
More Information
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Fort Collins, CO
50 miles point to pointLarimer 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.