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Marathons Found In Colorado in April

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Marathons in Colorado in April 2025

Find A Race is the US's favourite event listings site. Check out our list of April 2025 Marathons in Colorado below.

Race Calendar: Marathons Found In April

Platte River Half-Marathon and Relay

Littleton, Colorado
13 Apr 25
$85.80 - $186.50

Always Hope Easter Run 5K/10K/13.1 DENVER/AURORA

Aurora, Colorado
19 Apr 25
$32.80 - $48.70
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