Marathon Duchesnay-Quebec Half Marathon
Race Day Weather
Cold start — layer up, warming through the race
Runners will start in chilly 38°F conditions — dress in layers for the corral and plan to shed early. Temperatures rising to 53°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing. Moderate humidity at 75% is worth noting for effort level, especially in later miles.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Marathon Duchesnay-Quebec Half Marathon
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 Half Marathon 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
The Marathon Duchesnay-Quebec Half Marathon covers 21.1 kilometers point-to-point, starting at the Station Touristique Duchesnay in Sainte-Catherine-de-la-Jacques-Cartier and finishing at Canadian Forces Base Valcartier, about 30 kilometers northwest of downtown Quebec City. It follows the same route as the full marathon along the Veloroute Jacques-Cartier/Portneuf multi-use trail beside the Riviere Jacques-Cartier, running mostly on packed crushed stone with a shorter paved section. The course is flat and certified by World Athletics. Because the start and finish are roughly 12 kilometers apart, runners reach the start by organizer shuttle rather than driving there directly.