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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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Best Boston Marathon Qualifiers for 2026

Best Boston Marathon Qualifiers

It's here! Our annual list of the year's
best marathons to help you qualify for the Boston Marathon.

2026 IS HERE!


Marathon Pace Bands

Marathon Pace Bands

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Historical weather

Historical Race Day Weather for the Irving Frost Marathon

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

Weather Averages for Last 3 Years

Race day snapshot
Clear
Clear
Most common race morning weather across the last 3 years.
Start Line Conditions
Start Temp 42°F 6°C
Start Humidity 79% Humidity
Wind S 10 mph
Race day high 64°F 18°C
Race day low 42°F 6°C
PR Score 98.85 Weather-influenced race day scoring
Course Score 98.99 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.

December 20, 2025

Race day snapshot
Clear
Clear
Start Line Conditions
Start Temp 51°F 11°C
Start Humidity 83% Humidity
Wind S 15 mph Wind
Race day high 81°F 27°C
Race day low 51°F 11°C
PR Score 98.56 Normal score 99.00
Course Score 99.00 Course-only Score
Marathon Pace BandsLive Pace Band phone preview

Course-adjusted pacing

Want to run your best Irving Frost Marathon?

Irving Frost 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

December 21, 2024

Race day snapshot
Clear
Clear
Start Line Conditions
Start Temp 34°F 1°C
Start Humidity 71% Humidity
Wind ESE 5 mph Wind
Race day high 54°F 12°C
Race day low 34°F 1°C
PR Score 98.99 Normal score 99.00
Course Score 98.99 Course-only Score

December 16, 2023

Race day snapshot
Clear
Clear
Start Line Conditions
Start Temp 41°F 5°C
Start Humidity 83% Humidity
Wind NW 9 mph Wind
Race day high 58°F 14°C
Race day low 41°F 5°C
PR Score 98.99 Normal score 99.00
Course Score 98.99 Course-only Score