Boston or Bust Marathon

Huntsville, AL, USA · September 12, 2027
partly-cloudy-day69°·78° high·Light·Dry
4
Register

Race Day Weather

partly-cloudy-day
69°at start
82° high
Light
Dry
Your goal
0:00:00

Warm start, steamy finish

Runners will face temperatures starting at 69°F and climbing to 82°F by the end. With high humidity at 76% and a light 6 mph wind, it's crucial to adjust pacing early, particularly in the later laps as conditions become more oppressive. Hydration will be key, with frequent intake recommended. The potential for light rain adds a slight chance for cooling, but runners should prepare for warm and humid conditions throughout.

Race day forecast available in 310 days
partly-cloudy-night4
partly-cloudy-night4
partly-cloudy-night4
partly-cloudy-day4
partly-cloudy-day4
partly-cloudy-day4
partly-cloudy-day3
partly-cloudy-day3
partly-cloudy-day2
partly-cloudy-day2
partly-cloudy-day2

Pace Calculator

26.2mi
0:00:00
HH:MM:SS
Pace
—

Enter a finish time to see what race day does to it.

Common Goals:

Get forecast alerts for Boston or Bust Marathon

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

Race Plan

Get your personalized Boston or Bust Marathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

The Boston or Bust Marathon and Half Marathon run an extremely flat, fast course along Aldridge Creek and the Tennessee River in south Huntsville, Alabama. Both distances start and finish at Ditto Landing Marina and stay entirely on the Aldridge Creek Greenway. Both courses are USATF certified, and the race is a last-chance Boston Marathon qualifier each September. Source

Race weekend

Sunday, September 12
6:00 AMMarathon (26.2 mi)
Half Marathon (13.1 mi)

FAQ

When is the 2027 Boston or Bust Marathon?

The 2027 Boston or Bust Marathon will be held on Sunday September 12, 2027.

Is the Boston or Bust Marathon a Boston Marathon Qualifier?

Yes, the Boston or Bust Marathon is an official Boston Marathon qualifier.

What is the time limit for the Boston or Bust Marathon?

The time limit for the Boston or Bust Marathon is 6 hours.

What will the weather be like for the 2027 Boston or Bust Marathon?

The forecast calls for a high of 85°F and a low of 67°F with a 9% chance of rain.

Historical Weather

Based on 5 years of data
Avg Temp
68°F
L:64° H:74°
RunScore
4
Conditions
Rain Freq
20%
1 of 5 yrs
Wind5mph
Dew62°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
partly-cloudy-night
68°/81°-
3
2025
clear-night
57°/70°-
6
2024
clear-night
54°/70°-
7
2023
cloudy
68°/75°-
4
2022
rain
71°/74°Moderate
3