St. Luke's Delaware & Lehigh (D&L) Heritage Marathon

Northampton, PA, USA · November 15, 2026·

41°·51° high·Light·Dry

Weather

Race Day Weather

41°at start

54° high

Light

Dry

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Cool start, steady finish

Runners will face temperatures starting at 41°F and rising to 54°F, with average humidity at 63%. Winds will be light, peaking at 7 mph from the SSW. Given the cool conditions, pacing should be conservative initially, and hydration should be monitored regularly throughout the race.

Race day forecast available in 21 days

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Distance: 26.2mi

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Race Info

Both the marathon and half marathon use the D&L Trail for a majority of their courses. The trail follows the Lehigh River for a gentle net elevation drop with fine gravel or pavement depending on the section. Participants can expect a beautiful trail, joint-friendly terrain, and crisp autumn temperatures. Source

Website

Race weekend

Sunday, November 15

7:30 AMMarathon (26.2 mi)

7:30 AMHalf Marathon (13.1 mi)

Course Map

FAQ

When is the 2026 St. Luke's Delaware & Lehigh (D&L) Heritage Marathon?

The 2026 St. Luke's Delaware & Lehigh (D&L) Heritage Marathon will be held on Sunday November 15, 2026.

Is the St. Luke's Delaware & Lehigh (D&L) Heritage Marathon a Boston Marathon Qualifier?

Yes, the St. Luke's Delaware & Lehigh (D&L) Heritage Marathon is an official Boston Marathon qualifier.

What will the weather be like for the 2026 St. Luke's Delaware & Lehigh (D&L) Heritage Marathon?

The forecast calls for a high of 54°F and a low of 39°F with a 10% chance of rain.

Historical Weather

Based on 3 years of data

Avg Temp

43°F

L:35° H:49°

RunScore

Conditions

Rain Freq

0 of 3 yrs

Wind4mph

Dew33°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 St. Luke's Delaware & Lehigh (D&L) Heritage Marathon Partly cloudy throughout the day with rain. 2025	46°/55°	-	46°
2024 St. Luke's Delaware & Lehigh (D&L) Heritage Marathon Partly cloudy throughout the day with late afternoon rain. 2024	32°/50°	-	26°
2023 St. Luke's Delaware & Lehigh (D&L) Heritage Marathon Clear conditions throughout the day. 2023	29°/41°	-	27°

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