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Marathon Pace Bands

Marathon Pace Bands

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Historical weather

Historical Race Day Weather for the Boulderthon - Boulder Marathon

See historical race day weather for the Boulderthon - Boulder 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 60°F 16°C
Start Humidity 42% Humidity
Wind N 1 mph
Race day high 78°F 26°C
Race day low 50°F 10°C
PR Score 91.55 Weather-influenced race day scoring
Course Score 92.06 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 28, 2025

Race day snapshot
Clear
Clear
Start Line Conditions
Start Temp 59°F 15°C
Start Humidity 59% Humidity
Wind No Wind Wind
Race day high 77°F 25°C
Race day low 51°F 11°C
PR Score 91.83 Normal score 92.68
Course Score 92.57 Course-only Score
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Course-adjusted pacing

Want to run your best Boulderthon - Boulder Marathon?

Boulderthon - Boulder 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

September 29, 2024

Race day snapshot
Clear
Clear
Start Line Conditions
Start Temp 64°F 18°C
Start Humidity 34% Humidity
Wind SSE 0 mph Wind
Race day high 85°F 29°C
Race day low 55°F 13°C
PR Score 91.00 Normal score 92.68
Course Score 91.81 Course-only Score

October 8, 2023

Race day snapshot
Clear
Clear
Start Line Conditions
Start Temp 56°F 13°C
Start Humidity 32% Humidity
Wind W 3 mph Wind
Race day high 72°F 22°C
Race day low 45°F 7°C
PR Score 91.81 Normal score 92.68
Course Score 91.81 Course-only Score