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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 Bayshore Marathon

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

Weather Averages for Last 15 Years

Race day snapshot

Overcast

Most common race morning weather across the last 15 years.

Start Line Conditions

Start Temp 53°F 12°C

Start Humidity 81% Humidity

Wind N 3 mph

Race day high 71°F 22°C

Race day low 50°F 10°C

PR Score 97.96 Weather-influenced race day scoring

Course Score 99.21 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 23, 2026

Race day snapshot

Overcast

Start Line Conditions

Start Temp 53°F 12°C

Start Humidity 69% Humidity

Wind E 3 mph Wind

Race day high 63°F 17°C

Race day low 53°F 12°C

PR Score 98.94 Normal score 99.24

Course Score 99.24 Course-only Score

Boston Qualifying Cut-off Time Prediction Contest