Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run
- Date
- October 4, 2026
- Distance
- Windsor Marathon · Windsor Half Marathon · 10K & more
From the Organizer
Welcome to the Windsor Marathon. This event starts and ends at The Island at Pelican Lakes in Water Valley, with a great after party including breakfast, drinks and music. Tour beautiful Windsor on a variety of terrain, through golf courses, along the Poudre River trail, up and down hills, and event single track dirt trails for the marathon.
There's a distance for everyone with a kids fun run, 5k, 10k, half and full marathon. This year's races benefits Banner MD Anderson Cancer Center and the Weld RE-4 Foundation. Create a team and let's show our strength in numbers!
Distances & Pricing
Race Location
About This Sport
From Endurance Grid's Founder
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.
The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.
Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.
The half marathon rewards people who show up for the boring training miles.
How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
More running races in CO
Spring Dirt Pile Short Track Race Series
Blue Sky Ascent & Round Trip (formerly the Mt. Evans Ascent)
Independence Day Freedom 5K
5K
Rebel Run 5k
5K
Frequently Asked Questions (FAQs)
- What is the Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run?
- Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run is a running event held in Windsor, CO. Learn more about the different endurance sports here.
- When and where is the Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run?
- Sunday, October 4, 2026 in Windsor, CO at The Island at Pelican Lakes in Water Valley, Windsor, CO. Check the official event page for exact start times and wave schedules.
- How do I register for the Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run?
- Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.
Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run
Oct 4, 2026