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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.

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Historical weather

Historical Race Day Weather for the OC Marathon

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

Weather Averages for Last 12 Years

Race day snapshot

Overcast

Most common race morning weather across the last 12 years.

Start Line Conditions

Start Temp 57°F 14°C

Start Humidity 87% Humidity

Wind SE 5 mph

Race day high 67°F 19°C

Race day low 56°F 13°C

PR Score 97.76 Weather-influenced race day scoring

Course Score 99.04 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, 2026

Race day snapshot

Partially cloudy

Start Line Conditions

Start Temp 59°F 15°C

Start Humidity 96% Humidity

Wind W 4 mph Wind

Race day high 66°F 19°C

Race day low 59°F 15°C

PR Score 96.67 Normal score 98.55

Course Score 99.05 Course-only Score

Boston Qualifying Cut-off Time Prediction Contest