Weather: Calgary Marathon
Typical climate in May (an estimate, not measured race-day data). Use it to plan your race strategy, clothing, and hydration.
Typical climate for the race month — an estimate, not a forecast or a race-day record
10°C
Temperature
Range: 3°C – 16°C
44%
Humidity
Low — comfortable
36%
Rain Chance
Possible — check forecast
May
Typical race month
Usually on a Sunday
Conditions
Late May in Calgary averages a daytime high of about 16°C and a low of about 3°C, with measurable precipitation on roughly eleven days of the month; the race starts at 6:45 a.m., when it is at its coolest.
What to Wear
Light gloves
Useful at the start, tuck away later
Long sleeve or arm warmers
Versatile for cool starts
Hydration Strategy
Before the Race
Normal hydration. Drink to thirst in the 24 hours before. Avoid over-hydrating.
During the Race
Drink at aid stations every 3-4km. Alternate water and sports drink.
After the Race
Rehydrate within 30 minutes of finishing. A drink with electrolytes and some protein helps recovery.
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