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Best Boston Marathon Qualifiers for 2026

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Marathon Pace Bands

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Historical Race Day Weather for the Johnny Miles Marathon



Weather Averages for Last 6 Years

Race Day Temperatures

High: 67°F  (19°C)
Low: 50°F  (10°C)

Race Start Conditions

58°F  (14°C)
Humidity: 77%

Overcast
SW 8 mph

PR Score

113.98

Course Score

115.42


June 15, 2025

Race Day Temperatures

High: 67°F  (19°C)
Low: 46°F  (8°C)

Race Start Conditions

59°F  (15°C)
Humidity: 70%

Partially cloudy
SSW 3 mph 

PR Score (Normal Score)

98.98  (0.00)

Course Score

100.00


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November 30, -0001

Race Day Temperatures

High: 67°F  (19°C)
Low: 52°F  (11°C)

Race Start Conditions

55°F  (13°C)
Humidity: 85%

Mostly Cloudy
S 8 mph 

PR Score (Normal Score)

97.05  (0.00)

Course Score

98.50


June 17, 2018

Race Day Temperatures

High: 62°F  (17°C)
Low: 47°F  (8°C)

Race Start Conditions

52°F  (11°C)
Humidity: 68%

Clear
ENE 8 mph 

PR Score (Normal Score)

98.50  (0.00)

Course Score

98.50


June 17, 2012

Race Day Temperatures

High: 66°F  (19°C)
Low: 37°F  (3°C)

Race Start Conditions

56°F  (13°C)
Humidity: 73%

Scattered Clouds
SW 6 mph 

PR Score (Normal Score)

97.70  (0.00)

Course Score

98.50


June 19, 2011

Race Day Temperatures

High: 65°F  (18°C)
Low: 53°F  (12°C)

Race Start Conditions

60°F  (16°C)
Humidity: 90%

Overcast
SW 9 mph 

PR Score (Normal Score)

96.00  (0.00)

Course Score

98.50


June 20, 2010

Race Day Temperatures

High: 72°F  (22°C)
Low: 63°F  (17°C)

Race Start Conditions

65°F  (18°C)
Humidity: 74%

Overcast
SW 16 mph 

PR Score (Normal Score)

95.62  (0.00)

Course Score

98.50