That Dam Hill Marathon

London, ON, CanadaSeptember 19, 2026
Register

Race Day Weather

partly-cloudy-day
56°
75° high
Breezy
Dry

Warm afternoon, steady breezes

Runners will face a temperature increase from 56°F at the start to a warm 75°F by the finish. Winds will come from the SSW at 8 mph, with gusts up to 23 mph. With humidity at 71%, it's advisable to adjust pacing as the race progresses and ensure proper hydration throughout.

Race day forecast available in 172 days
clear-night9
partly-cloudy-night9
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day8
partly-cloudy-day8

Pace Calculator

Distance: 26.2mi
0:00:00
HH:MM:SS
Pace
Weather Adj.
Common Goals:

That Dam Hill Marathon in London, Ontario, offers a certified Boston Marathon Qualifier course that is both spectator-friendly and ideal for setting personal bests. The event features a variety of race options, including a marathon, half marathon, and multiple timed ultra races, all set within the scenic Springbank Park. Organized by dedicated volunteers, the race supports cancer research, with all net proceeds benefiting the Dunn with Cancer charity. Source

Area Map

Course Map

FAQ

When is the 2026 That Dam Hill Marathon?

The 2026 That Dam Hill Marathon will be held on Saturday September 19, 2026.

Historical Weather

Based on 3 years of data
Avg Temp
75°F
L:55° H:75°
RunScore
8
Conditions
Rain Freq
0%
0 of 3 yrs
Wind7mph
Dew51°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
clear-day
54°/73°-
7
2024
partly-cloudy-day
63°/82°-
8
2023
clear-day
48°/69°-
8