Marathon Duchesnay-Quebec
Race Day Weather
Cool start, gradual warming
Runners will face a cool start at 34°F, gradually warming to 50°F by the finish. With light crosswinds around 6 mph, conditions remain manageable throughout the race. Humidity will be high at 77%, so pacing adjustments may be necessary to maintain performance. The gently rolling terrain will require careful pacing, especially in the middle miles where fatigue may set in.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Marathon Duchesnay-Quebec
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Get your personalized Marathon Duchesnay-Quebec race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
Race Info
Marathon Duchesnay-Quebec is a point-to-point marathon that starts at the Station Touristique Duchesnay in Sainte-Catherine-de-la-Jacques-Cartier and finishes at Canadian Forces Base Valcartier, about 30 kilometers northwest of downtown Quebec City. The route follows the Veloroute Jacques-Cartier/Portneuf multi-use trail, mostly on packed stone dust through forest, and is certified by World Athletics. The race debuted in 2024 as a half-marathon-only event, the Demi-Marathon Duchesnay-Quebec, and added the full 42.2K marathon distance in 2025. It is a separate event from the Quebec City Marathon, which runs about three weeks earlier through Old Quebec, Montcalm, and Limoilou.