Treherne Marathon

Treherne, MB, Canada • September 20, 2026

Race Day Weather

50°

67° high

Breezy

Dry

Cool start, warming trend

Runners will face a temperature rise from 51°F at the start to 67°F by the finish, with average humidity at 68%. A steady wind from the SW at 11 mph will offer some cooling, but gusts up to 24 mph may affect pacing. Runners should consider starting conservatively and adjust their hydration strategy accordingly.

Race day forecast available in 166 days

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Pace Calculator

Distance: 26.2mi

Target Finish Time

0:00:00

HH:MM:SS

Pace

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Weather Adj.

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Common Goals:

The Treherne Marathon, known as "the toughest race on the prairies," challenges runners with its hilly terrain through Manitoba's picturesque Tiger Hills. This Boston Qualifier event offers multiple distances, including a full marathon, half marathon, 10K, 5K, and 1 mile, all starting and finishing in the welcoming town of Treherne. Organized by dedicated local volunteers, the race supports community initiatives, fostering a strong sense of camaraderie and local pride. Source

Course Map

FAQ

When is the 2026 Treherne Marathon?

The 2026 Treherne Marathon will be held on Sunday September 20, 2026.

Is the Treherne Marathon a Boston Marathon Qualifier?

Yes, the Treherne Marathon is an official Boston Marathon qualifier.

What will the weather be like for the 2026 Treherne Marathon?

The forecast calls for a high of 67°F and a low of 50°F with a 0% chance of rain.

Historical Weather

Based on 18 years of data

Avg Temp

67°F

L:53° H:68°

RunScore

Conditions

Rain Freq

33%

6 of 18 yrs

Wind10mph

Dew45°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Treherne Marathon Clear conditions throughout the day. 2025	56°/73°	-	57°
2024 Treherne Marathon Partly cloudy throughout the day. 2024	48°/66°	-	44°
2023 Treherne Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2023	60°/62°	Light	60°
2022 Treherne Marathon Partly cloudy throughout the day. 2022	52°/63°	-	38°
2019 Treherne Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2019	39°/41°	Light	39°
2018 Treherne Marathon Partly cloudy throughout the day with rain or snow. 2018	33°/41°	-	21°
2016 Treherne Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2016	58°/78°	Light	50°
2015 Treherne Marathon Partly cloudy throughout the day. 2015	64°/91°	-	51°
2014 Treherne Marathon Clear conditions throughout the day with morning rain. 2014	58°/78°	-	53°
2013 Treherne Marathon Cloudy skies throughout the day with morning rain. 2013	57°/69°	Light	57°
2012 Treherne Marathon Becoming cloudy in the afternoon. 2012	54°/75°	-	41°
2011 Treherne Marathon Clear conditions throughout the day. 2011	66°/81°	-	51°
2010 Treherne Marathon Clear conditions throughout the day. 2010	55°/66°	-	44°
2009 Treherne Marathon Partly cloudy throughout the day. 2009	61°/77°	-	60°
2008 Treherne Marathon Partly cloudy throughout the day with early morning rain. 2008	48°/60°	-	45°
2007 Treherne Marathon Partly cloudy throughout the day. 2007	55°/83°	-	40°
2006 Treherne Marathon Partly cloudy throughout the day with rain. 2006	48°/51°	Light	46°
2005 Treherne Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2005	48°/61°	Light	48°