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

Northampton, PA, USA · November 15, 2026

41°·49° high·Breezy·Dry

Weather

Race Day Weather

41°at start

49° high

Breezy

Dry

Cool start, steady conditions ahead

Runners will face a cool start at 39°F, rising to 49°F by race end. Winds from the SW at 11 mph will provide a slight challenge, with gusts up to 25 mph. With humidity at 56%, pacing strategies should remain consistent, and extra layers may be beneficial at the start.

Race day forecast available in 195 days

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

Pre-raceRace windowPost-race

Get forecast alerts for St. Luke's Delaware & Lehigh (D&L) Heritage Marathon

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

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

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 49°F and a low of 37°F with a 0% chance of rain.

Historical Weather

Based on 3 years of data

Avg Temp

52°F

L:39° H:53°

RunScore

Conditions

Rain Freq

33%

1 of 3 yrs

Wind5mph

Dew39°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	49°/60°	Light	50°
2024 St. Luke's Delaware & Lehigh (D&L) Heritage Marathon Partly cloudy throughout the day with late afternoon rain. 2024	35°/54°	-	30°
2023 St. Luke's Delaware & Lehigh (D&L) Heritage Marathon Clear conditions throughout the day. 2023	32°/44°	-	27°

More PA Races

Blue Cross Broad Street Run

2026-05-03 · Philadelphia, PA, USA

Gettysburg North-South Marathon

2026-04-26 · Gettysburg, PA, USA

York Marathon

2026-05-03 · York, PA, USA

1/2 Sauer 1/2 Kraut Marathon

2026-06-06 · Philadelphia, PA, USA

Conquer the Canyon Marathon

2026-07-25 · Wellsboro, PA, USA

Run for the Elk Marathon

2026-07-26 · Emporium, PA, USA