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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 Donna Marathon

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

Weather Averages for Last 15 Years

Race day snapshot

Clear

Most common race morning weather across the last 15 years.

Start Line Conditions

Start Temp 50°F 10°C

Start Humidity 77% Humidity

Wind NNE 10 mph

Race day high 62°F 17°C

Race day low 48°F 9°C

PR Score 98.15 Weather-influenced race day scoring

Course Score 99.66 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.

February 1, 2026

Race day snapshot

Clear

Start Line Conditions

Start Temp 27°F -3°C

Start Humidity 59% Humidity

Wind NW 30 mph Wind

Race day high 41°F 5°C

Race day low 28°F -2°C

PR Score 99.51 Normal score 99.36

Course Score 99.51 Course-only Score

Boston Qualifying Cut-off Time Prediction Contest