2026 Calgary Marathon - May 24

2026 Calgary Marathon - May 24 Race Completed

Race Completed

This marathon has finished. Check back for next year's edition.

Race Information

Race2026 Calgary Marathon - May 24
CityCalgary
Date2026-05-24 at 06:45
Field Size~1,600 runners
Time Limit6 hours 30 min
Cutoff pace9:15/km
TimezoneAmerica/Edmonton
Official SiteRun Calgary (Calgary Marathon Society)

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Race Day Weather

Average Temperature10.1°C / 50°F
Humidity64%
Wind13.9 km/h
Rain Chance48%
Typical ConditionsLate-May Calgary mornings are cool and dry, typically 6-13C at the 6:45 AM gun and warming through the morning. Skies are often clear with a brisk prairie breeze; sun is strong at altitude.

What to Prepare: Dress for a cold start you can shed: arm sleeves and a throwaway top. The thin air at 1,045m steals a little pace, so bank nothing early and carry lip balm and sunscreen for the dry, exposed stretches.

Based on historical averages for race week. Use our Weather Score Calculator and What to Wear Guide for personalized advice.

Wind Impact on Race Day

Wind at 13.9 km/h can affect your marathon pace by 5-15 seconds per kilometer. Headwinds slow you down exponentially — a 20 km/h wind costs more than twice a 10 km/h wind.

Calculate your wind-adjusted pace →

Race-Week Climate

Based on 20 years of race-week weather (2005-2024), MERRA-2 reanalysis

Cooler Typical Warmer
Temperature 5.1°C 10°C 15.7°C
Dew point -1.3°C 2.8°C 7°C
Wet-day chance: 48% Runnability: 81/100

Data: NASA POWER (MERRA-2 reanalysis), NASA Langley Research Center

Course Profile

Course TypeLoop
Elevation Gain133m
TerrainRoad
ProfileRolling, gently undulating road course with about 133m of total gain and no single hard climb; the altitude is the real variable.
Boston QualifierYes — Check your BQ time

Prepare for 2026 Calgary Marathon - May 24

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Frequently Asked Questions

When is the 2026 Calgary Marathon and what time does it start?

The full Servus Calgary Marathon runs on Sunday, May 24, 2026, with the 42.2 km gun at 6:45 AM Mountain Time. The start and finish are at Stampede Park near the Bow River in downtown Calgary. It is Canada's longest-running marathon, first held in 1963.

Is the Calgary Marathon a Boston qualifier?

Yes. The course is certified by Athletics Alberta and Athletics Canada and registered with AIMS, so your time is valid for Boston qualifying. Use the Boston qualifying calculator to check your standard, then a pace calculator to plan your splits.

How hard is the Calgary Marathon course?

It is a fast, mostly flat loop with only about 133m of total elevation gain along the Bow River pathways and city streets. The catch is altitude: Calgary sits near 1,045m, so the thinner air can shave a little off your pace versus a sea-level PR attempt. Try the race time predictor to set a realistic goal.

What is the time limit for the Calgary Marathon?

The official course time limit is 6 hours 30 minutes from the 6:45 AM start. That works out to roughly a 9:15 per kilometre average, which comfortably covers most walk-run finishers.

How do I register and how much does it cost?

Registration is open online through Race Roster on the official site and stays open until the field fills. The full-marathon fee is tiered by date, running from about CAD $137 early to roughly CAD $180 at the highest tier, plus 5% GST. There is no lottery.

What is the weather like in late May in Calgary?

Expect cool, dry mornings around 6-13C at the start, warming and bright by midday. The prairie air is low-humidity and the sun is intense at altitude, so plan for a cold start layer you can discard and sun protection for the open sections.

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