Harpoon 5 Miler

Boston, MA, USA · May 16, 2026

63°·64° high·Breezy·Dry

Weather

Race Day Weather

63°at start

65° high

Breezy

Dry

Mild temps, steady winds

Runners will face a temperature range from 61°F to 65°F, with average humidity at 56% and a dew point of 45°F. Winds will be from the S at 13 mph, with gusts up to 26 mph. It's advisable for runners to maintain a steady pace and stay hydrated, as conditions are favorable for performance.

Race day forecast available in 14 days

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

Pre-raceRace windowPost-race

Pace Calculator

Distance: 5.0mi

Target Finish Time

0:00:00

HH:MM:SS

Pace

—

Weather Adj.

—

Get forecast alerts for Harpoon 5 Miler

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

Race Info

The Harpoon 5-Miler in South Boston is a vibrant annual event that combines community spirit with a commitment to ALS research. Runners traverse the lively streets of South Boston, starting and finishing near the Harpoon Brewery on Northern Avenue. The course is known for its flat terrain, making it accessible for participants of all levels. After the race, the celebration continues at the brewery with refreshing beverages, live music, and a lively atmosphere, all while supporting the fight against ALS.

Website

Course Map

FAQ

When is the 2026 Harpoon 5 Miler?

The 2026 Harpoon 5 Miler will be held on Saturday May 16, 2026.

What is the time limit for the Harpoon 5 Miler?

The time limit for the Harpoon 5 Miler is 1 hours.

What will the weather be like for the 2026 Harpoon 5 Miler?

The forecast calls for a high of 66°F and a low of 55°F with a 0% chance of rain.

Historical Weather

Based on 21 years of data

Avg Temp

63°F

L:63° H:64°

RunScore

Conditions

Rain Freq

10%

2 of 21 yrs

Wind10mph

Dew53°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2024 Harpoon 5 Miler Cloudy skies throughout the day with a chance of rain throughout the day. 2024	54°/54°	Light	53°
2023 Harpoon 5 Miler Clearing in the afternoon with early morning rain. 2023	63°/65°	-	48°
2022 Harpoon 5 Miler Partly cloudy throughout the day with afternoon rain. 2022	67°/69°	-	59°
2019 Harpoon 5 Miler Partly cloudy throughout the day with afternoon rain. 2019	63°/64°	-	47°
2018 Harpoon 5 Miler Partly cloudy throughout the day with rain. 2018	71°/73°	-	66°
2017 Harpoon 5 Miler Partly cloudy throughout the day. 2017	57°/58°	-	43°
2016 Harpoon 5 Miler Partly cloudy throughout the day. 2016	57°/58°	-	53°
2015 Harpoon 5 Miler Partly cloudy throughout the day. 2015	62°/63°	-	57°
2014 Harpoon 5 Miler Partly cloudy throughout the day. 2014	62°/62°	-	45°
2013 Harpoon 5 Miler Partly cloudy throughout the day with late afternoon rain. 2013	59°/61°	-	51°
2012 Harpoon 5 Miler Partly cloudy throughout the day. 2012	65°/68°	-	48°
2011 Harpoon 5 Miler Cloudy skies throughout the day. 2011	51°/52°	-	46°
2010 Harpoon 5 Miler Partly cloudy throughout the day with rain clearing later. 2010	72°/74°	-	67°
2009 Harpoon 5 Miler Partly cloudy throughout the day. 2009	58°/59°	-	53°
2008 Harpoon 5 Miler Partly cloudy throughout the day with late afternoon rain. 2008	69°/71°	-	61°
2007 Harpoon 5 Miler Cloudy skies throughout the day with afternoon rain. 2007	59°/60°	-	55°
2006 Harpoon 5 Miler Cloudy skies throughout the day with a chance of rain throughout the day. 2006	56°/56°	Moderate	54°
2005 Harpoon 5 Miler Clearing in the afternoon. 2005	70°/71°	-	58°
2004 Harpoon 5 Miler Partly cloudy throughout the day. 2004	61°/62°	-	45°
2003 Harpoon 5 Miler Partly cloudy throughout the day with late afternoon rain. 2003	65°/66°	-	53°
2002 Harpoon 5 Miler Partly cloudy throughout the day with morning rain. 2002	73°/75°	-	50°

More MA Races

B.A.A. 10K

2026-06-21 · Boston, MA, USA

Walter Childs Marathon

2026-05-03 · Holyoke, MA, USA

Old Colony Marathon

2026-05-29 · Westfield, MA, USA

Steel Rail Marathon & Half

2026-05-17 · Adams, MA, USA

Boston's Run To Remember Half Marathon

2026-05-24 · Boston, MA, USA

Falmouth Road Race

2026-08-16 · Falmouth, MA, USA