Philadelphia Trail Marathon

Philadelphia, PA, USAApril 11, 2026
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Race Day Weather

clear-day
50°
67° high
Breezy
Dry

Cool conditions, steady winds

Runners will face a temperature rise from 50°F to a peak of 66°F, with average humidity at 57% and a dew point of 42°F. A light breeze from the ESE at 9 mph will provide a slight tailwind throughout. Runners should maintain a steady pace and stay hydrated, especially as temperatures increase.

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Wissahickon Valley park is the crown jewel of the Philadelphia park system. It is over 2000 acres in size and features more than 50 miles of trails. The park combines natural beauty and history, with many historic buildings and bridges located within the park. Philadelphia trail runners have embraced the park for many years for their training runs, due to its natural beauty and extensive trail network, but there hasn't been a long distance trail race in recent memory. Let's celebrate Philadelphia trails by running the Philadelphia Trail (Half)Marathon at the Wissahickon Valley Park. Over 600 runners have registered for the race in the past 2 years,and we are expecting a large field for the return to Wissahickon Valley. We are looking forward seeing you at the starting line in April. Source

Area Map

Course Map

FAQ

When is the 2026 Philadelphia Trail Marathon?

The 2026 Philadelphia Trail Marathon will be held on Saturday April 11, 2026.

Is the Philadelphia Trail Marathon a Boston Marathon Qualifier?

No, the Philadelphia Trail Marathon is NOT a Boston Marathon qualifier.

What will the weather be like for the 2026 Philadelphia Trail Marathon?

The forecast calls for a high of 67°F and a low of 50°F with a 10% chance of rain.

Historical Weather

Based on 1 years of data
Avg Temp
42°F
L:36° H:42°
RunScore
7
Conditions
Rain Freq
100%
1 of 1 yrs
Wind9mph
Dew36°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
cloudy
36°/42°Light
7