Sun, Jun 6, 2027 · 6:30 AM · Louisville, CO
Colorado 13er (Half Marathon/10k/5k)
5K10KHalf Marathon
- Price
- $39-$64
- Field size
- 190 · based on the organizer's entry cap
Half Marathons in Colorado — Page 2
Every upcoming Half Marathon race we know about in Colorado. Where a detail isn't confirmed, we mark it unknown rather than guessing.
Race results
Showing 61–80 of 80 races. Use search and filters from page 1.
0.5M10KHalf MarathonMarathon
- Price
- Free-$140.60
- Field size
- 2,250 · based on the organizer's entry cap
Sat, Jun 19, 2027 · 7:00 AM · Centennial, CO
Run Juneteenth Day 5K/10K/13.1 DENVER/AURORA
1M5K10KHalf Marathon
- Price
- $32.80-$48.70
Sat, Jun 19, 2027 · 8:30 AM · Windsor, CO
Red, White and Brew 5k, 10k & Half Marathon
1M5K10KHalf Marathon
- Price
- $20.08-$73.08
Fri, Jun 25, 2027 · 1:30 PM · Alma, CO
Race in the Clouds - Alma Dirt Festival 2027
10KHalf Marathon22MMarathonUltra2,600 ft gain
- Price
- $43.40-$69.90
Sat, Jul 17, 2027 · 7:00 AM · Denver, CO
Heatwave Half Marathon/5K/10K - Denver
1M5K10KHalf Marathon
- Price
- Free-$59.10
Sat, Jul 17, 2027 · 6:30 AM · Castle Rock, CO
Summer Splash Prairie Dog Half, 10k, & 5k
5K10KHalf Marathon
- Price
- $39-$74
- Field size
- 222 · based on the organizer's entry cap
Sun, Jul 18, 2027 · 7:00 AM · Colorado Springs, CO
Heatwave Half Marathon/5K/10K - Colorado Springs
1M5K10KHalf Marathon
- Price
- Free-$46.28
Sat, Aug 21, 2027 · 8:00 AM · Fraser, CO
Byers Peak Stampede Half Marathon & 5K Run
3MHalf Marathon
- Price
- $48.70-$69.90
Sun, Aug 22, 2027 · 7:15 AM · Westminster, CO
Pioneer Prairie Dog Half, 10k & 5k
5K10KHalf Marathon
- Price
- $39-$74
- Field size
- 111 · based on the organizer's entry cap
Sat, Sep 11, 2027 · 8:00 AM · Denver, CO
Golden Harvest Half Marathon & 5K/10K - Denver
1M5K10KHalf Marathon
- Price
- Free-$59.10
Sun, Sep 12, 2027 · 8:00 AM · Colorado Springs, CO
Golden Harvest Half Marathon & 5K/10K - Colorado Springs
1M5K10KHalf Marathon
- Price
- Free-$46.28
Sat, Oct 2, 2027 · 7:00 AM · Colorado Springs, CO
Colorado Springs Marathon, Half, 5K, and Kids K
1K5KHalf MarathonMarathon
- Price
- Free-$81.66
- Field size
- 20 · based on the organizer's entry cap
Browse related categories
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