Colleen De Reuck XC Classic
Colleen De Reuck XC Classic is a running race on October 31, 2026 in Boulder, CO, with entry fees from $15 to $25.
- Date
- October 31, 2026 (38 days to go)
- Location
- 1400 Knox Dr, Boulder, CO
- Price
- $15–$25
- Sport
- Running
From the Organizer
The Colleen De Reuck Cross Country Classic is a XC meet honoring one of the world's greatest ever distance athletes and Boulder local, Colleen De Reuck.
Each year, we celebrate Colleen’s career and her devotion to the sport of running, while promoting health and fitness, and also acknowledging a different Boulder Olympian every year.
The Colleen De Reuck Cross Country Classic is Race 2 of the Boulder XC series, taking place on Saturday October 31st. It will host a series of XC races for runners of all ages and abilities.
RACE 2
Harlow Platts Community Park
1400 Knox Dr. South Boulder, 80305
TIME
9:00AM - 10:30AM
COST - (This will help cover venue hire, electronic timing, portable toilets and insurance)
Mountain Lions Participants - FREE
12 YEARS & UNDER - $15.00
13 - 19 YEARS - $20.00
20 YEARS & OLDER - $25.00
SCHEDULE
9:00AM 10 YEARS & UNDER - 1K
9:15AM 16 YEARS & UNDER - 3K
9:45AM OPEN - 5K
Events
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
60°
Typical Low
33°
Chance of Rain
22%
Based on US Climate Normals data from Boulder, 2 mi from the venue.
About Boulder, CO
Population
106,274
as of 2023
City Elevation
5,438 ft
Nearest Airport
BJC
Rocky Mountain Metropolitan Airport · 12 mi
Major Hub
DEN
Denver International Airport · 35 mi
Time Zone
Mountain Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Colleen De Reuck XC Classic, put it on the calendar, and turn “someday” into a start date.
38
Days to train
- Race
- Colleen De Reuck XC Classic
- Date
- October 31, 2026
- Location
- 1400 Knox Dr, Boulder, CO
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About This Sport
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
More Running races near Boulder, CO
Frequently Asked Questions
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Colleen De Reuck XC Classic
Oct 31, 2026