Half-Marathon races in Colorado, United States — 2026 running calendar
89 events found
May
02
Sunrise Marathon 5K/10K/13.1 DENVER/AURORA
Centennial, Colorado, United States
Running
5K
10K
Half-Marathon
1.6K
+2
May
02
Cinco De Mayo Run 5K/10K/13.1 DENVER/AURORA
Centennial, Colorado, United States
Running
5K
10K
Half-Marathon
1.6K
+2
Apr
12
Prairie Dog Run Series
Louisville, Colorado, United States
Running
Half-Marathon
Mar
28
Race Through Colorado 1M, 5K, 10K, 13.1, 26.2 - Now Only $20!
Denver, Colorado, United States
$20.00
Running
1.6K
5K
10K
Half-Marathon
+1
May
02
Fifty States Half Marathon Club General Membership
Colorado Springs, Colorado, United States
$85.00
Running
Half-Marathon
Sunrise Marathon 5K/10K/13.1 DENVER/AURORA
Centennial, Colorado, United States
02 May, 2026 (Sat)
Running
5K
10K
Half-Marathon
1.6K
+2
Cinco De Mayo Run 5K/10K/13.1 DENVER/AURORA
Centennial, Colorado, United States
02 May, 2026 (Sat)
Running
5K
10K
Half-Marathon
1.6K
+2
Prairie Dog Run Series
Louisville, Colorado, United States
12 Apr, 2026 (Sun)
– 23 Aug, 2026
Running
Half-Marathon
Race Through Colorado 1M, 5K, 10K, 13.1, 26.2 - Now Only $20!
Denver, Colorado, United States
28 Mar, 2026 (Sat)
– 31 Dec, 2026
$20.00
Running
1.6K
5K
10K
Half-Marathon
+1
Fifty States Half Marathon Club General Membership
Colorado Springs, Colorado, United States
02 May, 2024 (Thu)
– 02 Apr, 2034
$85.00
Running
Half-Marathon