Colfax Marathon
About this race
Relay race
Join fellow runners on May 17, 2026 for the Colfax Marathon. It's a fantastic Marathon featuring a flat and fast course in Lone Tree.
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Running
Colfax Marathons Relay
Weather Overview
These values represent the 1-year monthly averages for May in Lone Tree.
About Lone Tree
Colfax Marathon takes place in Lone Tree, Colorado, United States. The local timezone is America/Denver.
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🏃 Plan Your Next Race in Lone Tree
Find upcoming events by distance:
- Marathons in Lone Tree Scenic 42.2K routes and Lone Tree Boston qualifiers.
- Lone Tree Running Calendar 2026 See all upcoming race dates.
Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.
