Blue Heron Half Marathon and 5K

Thornton, Colorado, United States

Apr, 2027 (TBD)

5k, Half-marathon

Race Information

Take part in this fast, flat, and scenic run along the South Platter River! Low key, low cost, low stress, fully supported, timed event. Use it as your first half, or as a tune-up for your upcoming marathon! Organized by the Rocky Mountain Road Runners, one of the oldest run clubs in Colorado!

Elevation & Celebration: The Denver Summer Bundle is Here! 

πŸ’Έ Save 25% When You Bundle!

3 Months. 3 Races. Your Ultimate  Summer Challenge.

Denver runners, it’s time to take your summer to new heights! Registration is officially open for the Denver Summer Bundleβ€”the best way to stay motivated and active all summer long.

The 2026 Denver Lineup:

  • πŸ”₯ July 11: Heatwave | 5k, 10k, Half, & Relay
  • β˜€οΈ August 8: Summer Sizzler | 5k, 10k, & 15k
  • 🌾 September 5: Golden Harvest | 5k, 10k, & Half

The Summer Bundle β˜€οΈ is built for those who want the best value and a consistent summer goal. One registration gets you into all three races with a massive 25% discount! Prefer to take it one month at a time? No problem, individual race registration is open.

Lock in your summer goals today, secure your savings, and let’s show the Mile-High City what we’re made of!

Bundle & Save 25%

 

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Race Facts

Race Size: 100 - 500

Elevation: Fast and Flat

Course Type: Trail

Boston Qualifier: No

Kids Run: No

Where to Stay

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