Races Marathon · Windsor, USA
Windsor Marathon
Windsor Marathon is a rolling marathon in Windsor, USA, held each October. A loop on paved trails from The Island at Pelican Lakes out towards River Bluffs and Kyger Reservoir, up County Road 13, with an extra loop through Belmont Ridge before the finish in Water Valley. Early October mornings on Colorado's Front Range are usually cool and dry, around 2 to 18°C, with a chance of an early cold snap. With Windsor Marathon's constant undulation, pace by effort rather than the watch: even effort beats even splits here.
Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site
When
October
next: Sunday 3 October 2027
Course
rolling
Marathon
Conditions
Early October mornings on Colorado's Front Range are usually cool and dry, around 2 to 18°C, with a chance of an early cold snap.
Racing this course well
A loop on paved trails from The Island at Pelican Lakes out towards River Bluffs and Kyger Reservoir, up County Road 13, with an extra loop through Belmont Ridge before the finish in Water Valley.
With Windsor Marathon's constant undulation, pace by effort rather than the watch: even effort beats even splits here.
Getting a place
- How you get in
- Open entry: first come, first served
- Price
- $100, rising after 31 December 2026 (2027 race)
Official Windsor Marathon site →Checked November 2026
Race day
- Next race
- Sunday 3 October 2027
- Start time
- 07:00
- Also on the day
- half-marathon, 10k, 5k, 1 mile
The course in numbers
The route climbs County Road 13 and adds a loop through Belmont Ridge before returning through Water Valley to the finish.
- Layout
- Loop
- Surface
- Paved trails
Worth knowing
- The marathon is one of four run.Windsor races that act as official BOLDERBoulder qualifier events.
- The race is organised by the local company miles.Beyond as part of the run.Windsor Race Series.
- Aid stations stand every 2 to 4 miles and offer water and Tailwind electrolyte drink.
Pick your goal for Windsor
Pace charts, weekly structure and timelines for the most common marathon goals:
The date shown is the one the organiser has announced. Change it if yours differs.
Build your training around Windsor Marathon.
RunV works backwards from race day to today. Your plan adapts when life interrupts, and you approve every change. It does not adapt to this specific course — the pacing guidance above is where the course knowledge is.
Everything above stays free and complete — this is an optional next step, not a paywall.
Asked often
- When is the Windsor Marathon?
- The next Windsor Marathon is on Sunday 3 October 2027 in Windsor, USA. It is held each October.
- Is the Windsor Marathon course flat?
- A loop on paved trails from The Island at Pelican Lakes out towards River Bluffs and Kyger Reservoir, up County Road 13, with an extra loop through Belmont Ridge before the finish in Water Valley.
- How do I enter the Windsor Marathon?
- Open entry: first come, first served. Price: $100, rising after 31 December 2026 (2027 race).
- How should I train for the Windsor Marathon?
- Train specifically for Windsor — terrain, conditions, goal pace — and let the plan flex around real life. With RunV Premium you can adapt your plan to fit your week.
Not sure what to target? Predict your marathon time from a recent race →
More marathon races
Supplements research for this distance
Build for Windsor — around your actual life
RunV engineers your block backwards from race day in October — and adapts it when training doesn't go to script. You approve every change.
