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

Northampton, PA, USA · November 15, 2026
partly-cloudy-day41°·56° high·Breezy·Dry
8
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Race Day Weather

partly-cloudy-day
41°at start
56° high
Breezy
Dry

Cool start, steady conditions

Runners will face a temperature rise from 41°F to 56°F, with a moderate wind from the NW at 11 mph, gusting to 23 mph. With an average humidity of 70%, pacing should be conservative early on. Hydration should be prioritized, especially as temperatures increase, to maintain performance.

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Pace Calculator

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

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 56°F and a low of 41°F with a 3% chance of rain.

Historical Weather

Based on 3 years of data
Avg Temp
53°F
L:39° H:53°
RunScore
9
Conditions
Rain Freq
0%
0 of 3 yrs
Wind6mph
Dew39°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
partly-cloudy-day
50°/61°-
9
2024
clear-day
35°/54°-
8
2023
clear-day
33°/44°-
8