Sat
Oct 31
9:45am
Sat, Oct 31, 9:45am · Boulder, CO
The National Weather Service forecast for the start appears here from Sat, Oct 24, a week before race day.
This race is hand-checked. No feed we ingest carries it, so somebody read the organiser's own page and wrote the date down — which is also why it can be out of date in a way the rest of this site cannot. The link goes to the organiser.
| Ran on | Listed as | Distances |
|---|---|---|
| Sat, Nov 1, 2025 | Colleen De Reuck XC Classic | 5K |
Gathered from past listings — 1 edition across 1 year. It says which weeks this race has landed in before, not where the next one will be: the date above is the only one we are claiming.
Thu, Oct 29 – Mon, Nov 2
See every race near Boulder, CO in October 2026 or across the year, or search the dates you are actually there.