
Calgary, Canada · Sunday 25 May 2025
Servus Calgary Marathon, held on May 25, 2025, is Canada's longest-running marathon, celebrating over six decades of running excellence. The event features a full marathon, half marathon, 10 km, and 5 km distances, making it accessible to runners of all levels. The course is certified by Athletics Alberta and Athletics Canada, serving as a Boston Marathon qualifier. With its well-organized logistics and festive atmosphere, including a strong focus on community and charity, this marathon is a mus
Adjusted Time
3:59:11
Time difference: -0.8 minutes compared to a flat, road, temperate course.
Servus Calgary Marathon is a full marathon held in Calgary, Canada, scheduled for Sunday 25 May 2025. The course is run on road surface with 156m of total elevation gain, reaching a maximum altitude of 1073m above sea level. For registration and full race details, visit the official Servus Calgary Marathon website.
With 156m of elevation gain, this is a moderately undulating course. The route ranges from 1038m to 1073m above sea level (35m total range). While not completely flat, the elevation changes are manageable for most runners and shouldn't significantly impact pacing strategy.
Based on historical weather data for May, the expected race day conditions are as follows. Moderate temperatures between 7°C and 25°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance over the full distance. There is a low chance of rain (1%), so dry conditions are likely.
Servus Calgary 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 Servus Calgary 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 Servus Calgary Marathon against other marathons to find the right race for your goals.
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