Summit Run 5K

Hadley, MA, USA · September 20, 2026

57°·70° high·Light·Dry

Weather

Race Day Weather

57°at start

70° high

Light

Dry

Cool start, warming up, headwinds ahead

Runners will face a temperature increase from 59°F at the start to 71°F by the finish, with average humidity at 56%. Wind will be a headwind from miles 8 to 20, peaking at 13 mph, which may challenge pacing during these segments. Adjusting pace early and planning for hydration is crucial, especially during the climb from mile 13 to 17.

7 AM

8 AM

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10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

5 PM

6 PM

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Race Info

The Summit Run 5K climbs from Mountain Road in Hadley, Massachusetts, to the summit of Mount Holyoke inside Skinner State Park, passing the Hockanum Village turnaround near the one-mile mark before the final climb up a paved park road to the summit house, with views over the Connecticut River valley. The course was rerouted in 2025 to drop a stretch along Route 47. The race runs each September.

Website

FAQ

When is the 2026 Summit Run 5K?

The 2026 Summit Run 5K will be held on Sunday September 20, 2026.

What will the weather be like for the 2026 Summit Run 5K?

The forecast calls for a high of 70°F and a low of 52°F with a 20% chance of rain.

Historical Weather

Based on 19 years of data

Avg Temp

71°F

L:62° H:71°

RunScore

Conditions

Rain Freq

16%

3 of 19 yrs

Wind9mph

Dew50°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Summit Run 5K Partly cloudy throughout the day. 2025	56°/70°	-	42°
2024 Summit Run 5K Partly cloudy throughout the day. 2024	65°/71°	-	50°
2023 Summit Run 5K Cloudy skies throughout the day with rain. 2023	56°/59°	Light	56°
2022 Summit Run 5K Partly cloudy throughout the day with afternoon rain. 2022	55°/63°	Light	52°
2022 Summit Run 5K Clear conditions throughout the day. 2022	56°/68°	-	37°
2021 Summit Run 5K Clear conditions throughout the day. 2021	66°/71°	-	44°
2021 Summit Run 5K Partly cloudy throughout the day. 2021	58°/75°	-	54°
2019 Summit Run 5K Partly cloudy throughout the day. 2019	68°/74°	-	45°
2018 Summit Run 5K Partly cloudy throughout the day. 2018	53°/61°	-	47°
2017 Summit Run 5K Clearing in the afternoon with late afternoon rain. 2017	67°/84°	-	66°
2016 Summit Run 5K Clear conditions throughout the day. 2016	56°/66°	-	34°
2015 Summit Run 5K Clearing in the afternoon. 2015	67°/73°	-	50°
2014 Summit Run 5K Cloudy skies throughout the day with rain clearing later. 2014	64°/77°	Light	67°
2013 Summit Run 5K Partly cloudy throughout the day with rain clearing later. 2013	63°/67°	-	49°
2011 Summit Run 5K Partly cloudy throughout the day. 2011	63°/71°	-	53°
2010 Summit Run 5K Partly cloudy throughout the day. 2010	60°/66°	-	51°
2009 Summit Run 5K Partly cloudy throughout the day with early morning rain. 2009	69°/80°	-	61°
2002 Summit Run 5K Partly cloudy throughout the day. 2002	74°/83°	-	64°
1999 Summit Run 5K Clear conditions throughout the day with early morning rain. 1999	57°/72°	-	48°

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