Boston or Bust Marathon

Huntsville, AL, USA · September 12, 2027
partly-cloudy-day69°·78° high·Light·Dry
4
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Boston or Bust Marathon race day weather

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

Warm day, adjust pace early

Runners will face a temperature rise from 69°F at the start to 78°F by the finish, with average humidity at 76% creating a muggy feel. Light winds from the ENE at 6 mph will have minimal impact on performance. With temperatures climbing, it's advisable for runners to start conservatively and stay hydrated, especially in the later laps.

Race day forecast available in 290 days
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Pace Calculator

26.2mi
0:00:00
HH:MM:SS
Pace
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Enter a finish time to see what race day does to it.

Common Goals:

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Boston or Bust Marathon route and elevation

The Boston or Bust Marathon course has about 144 ft (44 m) of climbing and 145 ft (44 m) of descent, and finishes near the elevation it starts. It is flatter than 80% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. It has no steep miles: no mile climbs more than 30 ft (9 m).

What the hills cost

The hills change finish times by less than 0.2% here, under half a minute for a 4:00 runner.

Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.

Even-effort splits for a 3:30, 4:00 or 4:30 finish
The Boston or Bust Marathon mile splits at even effort for three finish times, with each mile's climb and descent
MileClimbDescent3:304:004:30
117 ft22 ft7:589:0610:15
214 ft4 ft8:059:1410:23
314 ft7 ft8:039:1210:21
419 ft12 ft8:039:1210:21
517 ft13 ft8:029:1110:19
69 ft13 ft7:589:0710:16
713 ft14 ft8:009:0810:17
811 ft21 ft7:589:0610:14
97 ft15 ft7:589:0710:14
106 ft13 ft7:589:0610:15
1128 ft21 ft8:039:1210:21
128 ft6 ft8:019:0910:18
134 ft14 ft7:579:0610:14
1424 ft22 ft8:009:0910:18
1512 ft5 ft8:049:1210:21
1616 ft7 ft8:049:1410:23
1719 ft10 ft8:049:1310:22
1815 ft14 ft8:009:0910:18
1911 ft12 ft8:009:0810:16
2013 ft14 ft8:009:0810:17
2111 ft19 ft7:579:0610:14
227 ft17 ft7:589:0610:15
234 ft12 ft7:589:0610:14
2425 ft23 ft8:019:1010:18
2512 ft5 ft8:039:1210:21
265 ft11 ft7:599:0710:16
Last 0.28 ft5 ft1:482:042:19

Explore the Boston or Bust Marathon course with the weather and your pace along the route, or compare it with other races.

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

About the Boston or Bust Marathon

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)

Boston or Bust Marathon 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.

What is the elevation gain of the Boston or Bust Marathon?

The Boston or Bust Marathon course has about 144 ft (44 m) of climbing and 145 ft (44 m) of descent, and finishes near the elevation it starts.

Is the Boston or Bust Marathon flat?

Yes. It has about 5 ft (2 m) of climbing per mile, and no mile climbs more than 30 ft (9 m). The hills change finish times by less than 0.2% here, under half a minute for a 4:00 runner. It is flatter than 80% of the marathon courses racecast.io has mapped, measured by what the hills cost in time.

What is the weather usually like for the Boston or Bust Marathon?

Over the 5 years racecast.io has race-day weather for (2022 to 2026), it averaged 64°F at the start and 74°F by a typical finish. Rain fell during race hours in 1 of those years (2022).

What was the hottest Boston or Bust Marathon?

Of the 5 years on record, 2026 was the warmest, reaching 81°F during race hours. The coldest start was 2024, at 55°F.

What was the windiest Boston or Bust Marathon?

Of the 5 years on record, 2024 was the windiest, with wind averaging 7 mph during race hours. The calmest was 2026, at 1 mph.

Boston or Bust Marathon weather history

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