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Boston Cut-off Time Prediction Contest

Boston Cut-off Time Prediction Contest

Predict the 2027 Boston Cut-off Time and win a great prize and bragging rights among all your running friends.

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Marathon Pace Bands

Marathon Pace Bands

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Best Boston Marathon Qualifiers for 2026

Best Boston Marathon Qualifiers

It's here! Our annual list of the year's
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Historical weather

Historical Race Day Weather for the Muddy River Marathon

See historical race day weather for the Muddy River Marathon, including start temperature, humidity, wind, race day temperatures, PR score, and course score.

Weather Averages for Last 4 Years

Race day snapshot
Rain, Overcast
Most common race morning weather across the last 4 years.
Start Line Conditions
Start Temp 63°F 17°C
Start Humidity 85% Humidity
Wind N 9 mph
Race day high 73°F 23°C
Race day low 58°F 14°C
PR Score 95.12 Weather-influenced race day scoring
Course Score 98.01 Course-only Score

Race Day Weather by Year

Most recent years appear first so you can quickly compare start conditions, temperatures, wind, and scores across different editions of the race.

May 3, 2025

Race day snapshot
Rain, Overcast
Start Line Conditions
Start Temp 57°F 14°C
Start Humidity 90% Humidity
Wind N 9 mph Wind
Race day high 65°F 18°C
Race day low 54°F 12°C
PR Score 96.67 Normal score 96.46
Course Score 98.01 Course-only Score
Marathon Pace BandsLive Pace Band phone preview

Course-adjusted pacing

Want to run your best Muddy River Marathon?

Muddy River Marathon Pace Bands are adjusted for the specific terrain of the course, your goal time, and pacing strategy.

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Easy to useCourse-aware pacing, goal-time based splits, and a cleaner race day plan.See all pace bands

May 4, 2024

Race day snapshot
Partially cloudy
Partially cloudy
Start Line Conditions
Start Temp 69°F 21°C
Start Humidity 89% Humidity
Wind N 3 mph Wind
Race day high 83°F 28°C
Race day low 61°F 16°C
PR Score 92.43 Normal score 96.46
Course Score 98.01 Course-only Score

April 29, 2023

Race day snapshot
Overcast
Overcast
Start Line Conditions
Start Temp 58°F 14°C
Start Humidity 91% Humidity
Wind S 8 mph Wind
Race day high 69°F 21°C
Race day low 55°F 13°C
PR Score 96.63 Normal score 96.46
Course Score 98.01 Course-only Score

April 30, 2022

Race day snapshot
Clear
Clear
Start Line Conditions
Start Temp 69°F 21°C
Start Humidity 70% Humidity
Wind S 14 mph Wind
Race day high 74°F 23°C
Race day low 63°F 17°C
PR Score 94.74 Normal score 96.46
Course Score 98.01 Course-only Score