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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.

Submit Your Prediction

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Historical weather

Historical Race Day Weather for the United States Air Force Marathon

See historical race day weather for the United States Air Force Marathon, including start temperature, humidity, wind, race day temperatures, PR score, and course score.

Weather Averages for Last 15 Years

Race day snapshot

Mostly Cloudy

Most common race morning weather across the last 15 years.

Start Line Conditions

Start Temp 61°F 16°C

Start Humidity 88% Humidity

Wind E 4 mph

Race day high 81°F 27°C

Race day low 61°F 16°C

PR Score 95.66 Weather-influenced race day scoring

Course Score 98.85 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.

September 19, 2026

Race day snapshot

Partially cloudy

Start Line Conditions

Start Temp 65°F 18°C

Start Humidity 90% Humidity

Wind E 7 mph Wind

Race day high 81°F 27°C

Race day low 66°F 19°C

PR Score 96.63 Normal score 97.54

Course Score 98.92 Course-only Score

Boston Qualifying Cut-off Time Prediction Contest