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In-person races are back in Colorado: Here's where to register

Ready to start training? There are races of all lengths scheduled across Colorado this year.

DENVER — Runners across Colorado are eagerly awaiting the return of in-person races after most events were canceled in 2020.

Colorado's largest running event, Denver's Colfax Marathon, has moved to October, however the organization will host the Runners Reunion 5K and 10K on its traditional May weekend.

COVID safety protocols will be in place, including face mask requirements before and after the start/finish line, no spectators, set start times and corrals limited to 25 runners at the start line at City Park.

Races of all lengths are beginning to be added to the schedule of Colorado runners. Here's some of the races scheduled in 2021:

> Above video: Benefits of cardio.

> Know of an in-person running event? Share here.

Polar Plunge 5K

  • Sunday, March 7
  • Denver
  • Washington Park

That Ram Run 13.1, 10K, 5K

  • Sunday, March 7
  • Aurora
  • Cherry Creek Dam Road

Spring Equinox Half Marathon & 4 Mile

  • Sunday, March 21
  • Fort Collins
  • Anheuser-Busch Brewery

Central Park 5K

  • Sunday, March 28
  • Denver

Polar Plunge 5K

  • Saturday, April 10
  • Boulder
  • Boulder Reservoir

5K Trail Walk/Run Series

  • Saturday, April 10
  • Aurora
  • Arapahoe County Fairgrounds and Park 

Prairie Dog Half Marathon

  • Sunday, April 11
  • Arvada

Donut Dash 5K

  • Sunday, April 11
  • Denver
  • Washington Park

Polar Plunge 5K

  • Saturday, April 17
  • Aurora
  • Aurora Reservoir

Polar Plunge 5K

  • Saturday, April 24
  • Colorado Springs
  • UCHealth Park

Mile High Mile & 5K

  • Sunday, April 25
  • Denver

Cinco de Mayo 5K

  • Saturday, May 1
  • Fort Lupton
  • Rail Road Park

Cinco de Mayo 5K

  • Sunday, May 2
  • Denver
  • Washington Park

Greenland Trail Races

  • Saturday, May 8
  • Larkspur
  • Greenland Open Space

Colorado Women's Classic

  • Sunday, May 9
  • Westminster

Runners Reunion 5K and 10K

  • May 15-16
  • Denver
  • City Park
  • Run Colfax will host the Runners Reunion 5K and 10K over its traditional marathon weekend in May.

Ladies Brew Run

  • Sunday, May 16
  • Littleton
  • Breckenridge Brewery

Petri Dash

  • June 5
  • Denver
  • Sloan's Lake Park

Flamingo Day 5K

  • June 6
  • Denver
  • Sloan's Lake Park

Dash for Smiles 5K

  • July 25
  • Denver
  • Stapleton Central Park

Boulder Rez Marathon

  • Aug. 14
  • Boulder 
  • Boulder Reservoir

Colfax Marathon

  • Oct. 16-17
  • Denver
  • City Park

Day of the Dead 5K

  • Oct. 24
  • Denver
  • City Park

Pumpkin Pie 5K

  • Nov. 20
  • Denver
  • City Park

Christmas Sweater 5K

  • Dec. 19
  • Denver
  • Washington Park

> Know of an in-person running event? Share here.

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RELATED: Colfax Marathon reschedules race to October 2021

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