
Windsor, United States of America · Sunday 4 October 2026
Running the Windsor Marathon means you'll spend the entire morning on roads that barely challenge your legs, which is either a gift or a curse depending on your mindset. The course is genuinely flat, the kind of flat that lets you settle into a rhythm by mile two and potentially maintain it all the way through. You won't feel that satisfying downhill relief that faster runners crave, but you also won't hit unexpected hills that mess with your pacing strategy. The Windsor area sits right along the Connecticut River valley, so expect tree-lined roads and the occasional water views as you loop through this part of New England. In October, the foliage should be outstanding, and that's probably the most interesting visual element you'll get from the route, since the landscape doesn't dramatically shift elevation or dramatically shift much else as the miles accumulate. The real test on this course is mental rather than physical. With no hills to blame for a fade and no dramatic scenery changes to distract you, a bad patch around mile eighteen feels like it's entirely on you. The flatness that seemed merciful at mile five starts to feel relentless by mile thirty, when your quads are tired and there's nothing topographical to break up the monotony. October weather in Windsor should be cool and mostly manageable, which helps, but you'll be acutely aware of your own effort in a way that hillier courses sometimes mask. If you run your best when you can settle into a steady effort and just go, this course will suit you. If you need terrain variation to keep your mind engaged, you might find yourself counting down miles longer than usual.
Adjusted Time
3:52:32
Time difference: -7.5 minutes compared to a flat, road, temperate course.
Windsor Marathon is a full marathon held in Windsor, United States of America, scheduled for Sunday 4 October 2026. The course is run on road surface with 0m of total elevation gain, reaching a maximum altitude of 0m above sea level.
This is a very flat course with only 0m of total elevation gain across the full distance. The course ranges from 0m to 0m above sea level — a 0m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
Windsor Marathon is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.
Our difficulty rating for Windsor Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
Looking for an easier marathon or a tougher challenge? You can also compare Windsor Marathon against other marathons to find the right race for your goals.
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