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Details
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Light Rain
25%
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Race Overview
The Chicago Marathon starts and finishes in Grant Park, looping through 29 Chicago neighborhoods and crossing the Chicago River six times. The flat, fast course is a Boston qualifier and has produced seven marathon world records, most recently Ruth Chepng'etich's 2:09:56 women's mark in 2024. It's one of the seven Abbott World Marathon Majors, held every year on the second Sunday of October.
WikipediaFAQ
When is the 2026 Chicago Marathon?
The 2026 Chicago Marathon will be held on Sunday October 11, 2026.
Is the Chicago Marathon a Boston Marathon Qualfier?
Yes, the Chicago Marathon is an official Boston Marathon qualifier.
Chicago Marathon Course Map
Loading Course Map...
Chicago Marathon Weather History
Chicago Marathon Weather Averages
Average Temp: 57°, Average Low: 49°, Average High: 66°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 51° | 54° | 57° | 60° | 62° | 63° | 64° |
| Feel | 49° | 52° | 56° | 58° | 61° | 62° | 63° |
| Rain | - | - | - | - | - | - | - |
| Wind | 7mph | 9mph | 9mph | 10mph | 10mph | 10mph | 11mph |
| Dew | 44° | 44° | 44° | 43° | 43° | 42° | 42° |
| RunScore |  | | | | | | |
Chicago Marathon 2025
Oct 12, 2025
Partly cloudy throughout the day.
Low: 51°, High: 68°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp |  52° | 55° | 59° | 62° | 64° | 66° | 67° |
| Feel | 52° | 55° | 59° | 62° | 64° | 66° | 67° |
| Rain | - | - | - | - | - | - | - |
| Wind | 5mph | 9mph | 9mph | 8mph | 6mph | 7mph | 1mph |
| Dew | 47° | 47° | 48° | 48° | 48° | 47° | 48° |
| RunScore |  | | | | | | |
Chicago Marathon 2024
Oct 13, 2024
Partly cloudy throughout the day.
Low: 52°, High: 66°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp |  59° | 60° | 60° | 61° | 63° | 66° | 66° |
| Feel | 59° | 60° | 60° | 61° | 63° | 66° | 66° |
| Rain | - | - | - | - | - | - | - |
| Wind | 8mph | 9mph | 10mph | 10mph | 11mph | 16mph | 19mph |
| Dew | 53° | 51° | 51° | 50° | 49° | 47° | 46° |
| RunScore | | | | | |  |  |
Chicago Marathon 2023
Oct 8, 2023
Partly cloudy throughout the day.
Low: 45°, High: 55°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 47° | 50° | 51° | 54° | 55° | 55° | 54° |
| Feel | 43° | 50° | 51° | 54° | 55° | 55° | 54° |
| Rain | - | - | - | - | - | - | - |
| Wind | 8mph | 8mph | 10mph | 9mph | 11mph | 9mph | 8mph |
| Dew | 37° | 37° | 37° | 35° | 36° | 35° | 35° |
| RunScore | | | | | | | |
Chicago Marathon 2022
Oct 9, 2022
Becoming cloudy in the afternoon.
Low: 45°, High: 70°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 46° | 50° | 54° | 59° | 63° | 66° | 68° |
| Feel | 42° | 50° | 54° | 59° | 63° | 66° | 68° |
| Rain | - | - | - | - | - | - | - |
| Wind | 9mph | 12mph | 10mph | 7mph | 9mph | 10mph | 11mph |
| Dew | 32° | 33° | 35° | 36° | 37° | 37° | 37° |
| RunScore | | | | | | | |
Chicago Marathon 2021
Oct 10, 2021
Partly cloudy throughout the day with afternoon rain.
Low: 72°, High: 81°, Light Rain
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 72° | 72° | 73° | 75° |  74° | 74° | 75° |
| Feel | 72° | 72° | 73° | 75° | 74° | 74° | 75° |
| Rain | - | - | - | - | light | - | - |
| Wind | 13mph | 17mph | 13mph | 17mph | 15mph | 9mph | 9mph |
| Dew | 62° | 62° | 62° | 62° | 62° | 62° | 62° |
| RunScore | | | | | | | |
Chicago Marathon 2020
Oct 11, 2020
Partly cloudy throughout the day.
Low: 57°, High: 67°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 60° | 62° | 63° | 65° | 66° | 66° | 67° |
| Feel | 60° | 62° | 63° | 65° | 66° | 66° | 67° |
| Rain | - | - | - | - | - | - | - |
| Wind | 9mph | 10mph | 8mph | 6mph | 7mph | 9mph | 8mph |
| Dew | 53° | 53° | 53° | 53° | 52° | 53° | 53° |
| RunScore | | | | | | | |
Chicago Marathon 2019
Oct 13, 2019
Partly cloudy throughout the day.
Low: 39°, High: 54°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 42° | 44° | 45° | 48° | 50° | 52° | 54° |
| Feel | 36° | 37° | 38° | 41° | 50° | 52° | 54° |
| Rain | - | - | - | - | - | - | - |
| Wind | 11mph | 15mph | 18mph | 20mph | 19mph | 17mph | 21mph |
| Dew | 32° | 32° | 31° | 31° | 32° | 32° | 32° |
| RunScore | | |  | | | | |
Chicago Marathon 2018
Oct 7, 2018
Cloudy skies throughout the day with rain.
Low: 57°, High: 63°, Heavy Rain
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 58° | 59° | 59° | 60° | 60° | 60° | 59° |
| Feel | 58° | 59° | 59° | 60° | 60° | 60° | 59° |
| Rain | - | light | light | light | - | - | - |
| Wind | 7mph | 10mph | 10mph | 10mph | 11mph | 11mph | 12mph |
| Dew | 55° | 56° | 56° | 56° | 56° | 56° | 56° |
| RunScore | | | | | | | |
Chicago Marathon 2017
Oct 8, 2017
Partly cloudy throughout the day.
Low: 55°, High: 80°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 57° | 60° | 65° | 69° | 73° | 76° | 77° |
| Feel | 57° | 60° | 65° | 69° | 73° | 76° | 77° |
| Rain | - | - | - | - | - | - | - |
| Wind | 8mph | 4mph | 5mph | 6mph | 7mph | 12mph | 14mph |
| Dew | 54° | 55° | 55° | 55° | 54° | 50° | 49° |
| RunScore | | | | | | | |
Chicago Marathon 2016
Oct 9, 2016
Partly cloudy throughout the day.
Low: 50°, High: 63°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 52° | 54° | 56° | 58° | 60° | 62° | 63° |
| Feel | 52° | 54° | 56° | 58° | 60° | 62° | 63° |
| Rain | - | - | - | - | - | - | - |
| Wind | 8mph | 10mph | 10mph | 10mph | 12mph | 12mph | 13mph |
| Dew | 46° | 45° | 44° | 43° | 43° | 43° | 44° |
| RunScore | | | | | | | |
Chicago Marathon 2015
Oct 11, 2015
Partly cloudy throughout the day.
Low: 53°, High: 79°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 54° | 57° | 62° | 67° | 71° | 75° | 77° |
| Feel | 54° | 57° | 62° | 67° | 71° | 75° | 77° |
| Rain | - | - | - | - | - | - | - |
| Wind | 11mph | 11mph | 13mph | 14mph | 14mph | 13mph | 18mph |
| Dew | 45° | 46° | 47° | 48° | 49° | 51° | 51° |
| RunScore | | | | | | | |
Chicago Marathon 2014
Oct 12, 2014
Becoming cloudy in the afternoon with late afternoon rain.
Low: 42°, High: 63°, Light Rain
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 44° | 49° | 53° | 57° | 60° | 62° | 62° |
| Feel | 40° | 46° | 53° | 57° | 60° | 62° | 62° |
| Rain | - | - | - | - | - | - | - |
| Wind | 6mph | 8mph | 10mph | 11mph | 11mph | 13mph | 11mph |
| Dew | 36° | 38° | 39° | 39° | 40° | 40° | 42° |
| RunScore | | | | | | | |
Chicago Marathon 2013
Oct 13, 2013
Clear conditions throughout the day with early morning rain.
Low: 46°, High: 64°, Light Rain
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 48° | 54° | 57° | 60° | 61° | 62° | 63° |
| Feel | 47° | 54° | 57° | 60° | 61° | 62° | 63° |
| Rain | - | - | - | - | - | - | - |
| Wind | 4mph | 9mph | 9mph | 10mph | 9mph | 7mph | 8mph |
| Dew | 40° | 40° | 41° | 39° | 37° | 37° | 37° |
| RunScore | | | | | | | |
Chicago Marathon 2012
Oct 7, 2012
Partly cloudy throughout the day.
Low: 39°, High: 50°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 40° | 43° | 46° | 48° | 49° | 48° | 48° |
| Feel | 35° | 37° | 41° | 44° | 47° | 43° | 43° |
| Rain | - | - | - | - | - | - | - |
| Wind | 7mph | 10mph | 9mph | 7mph | 7mph | 11mph | 12mph |
| Dew | 29° | 28° | 27° | 25° | 24° | 21° | 20° |
| RunScore | | | | | | | |
Chicago Marathon 2011
Oct 9, 2011
Clear conditions throughout the day.
Low: 56°, High: 79°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 59° | 63° | 69° | 73° | 76° | 78° | 79° |
| Feel | 59° | 63° | 69° | 73° | 76° | 78° | 79° |
| Rain | - | - | - | - | - | - | - |
| Wind | 2mph | 1mph | 0mph | 0mph | 2mph | 5mph | 4mph |
| Dew | 49° | 51° | 52° | 51° | 49° | 48° | 48° |
| RunScore | | | | | | | |
Chicago Marathon 2010
Oct 10, 2010
Partly cloudy throughout the day.
Low: 58°, High: 83°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 60° | 65° | 72° | 76° | 81° | 83° | 83° |
| Feel | 60° | 65° | 72° | 76° | 80° | 81° | 81° |
| Rain | - | - | - | - | - | - | - |
| Wind | 1mph | 4mph | 2mph | 4mph | 4mph | 10mph | 9mph |
| Dew | 50° | 52° | 51° | 49° | 48° | 47° | 48° |
| RunScore | | | | | | | |
Chicago Marathon 2009
Oct 11, 2009
Partly cloudy throughout the day.
Low: 29°, High: 44°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 32° | 34° | 36° | 38° | 40° | 42° | 43° |
| Feel | 26° | 27° | 29° | 33° | 35° | 38° | 41° |
| Rain | - | - | - | - | - | - | - |
| Wind | 6mph | 8mph | 9mph | 7mph | 7mph | 6mph | 4mph |
| Dew | 22° | 22° | 20° | 20° | 19° | 19° | 18° |
| RunScore | | | | | | | |
Chicago Marathon 2008
Oct 12, 2008
Partly cloudy throughout the day.
Low: 62°, High: 84°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 62° | 66° | 70° | 75° | 78° | 82° | 83° |
| Feel | 62° | 66° | 70° | 75° | 78° | 81° | 82° |
| Rain | - | - | - | - | - | - | - |
| Wind | 3mph | 6mph | 8mph | 8mph | 4mph | 6mph | 7mph |
| Dew | 56° | 56° | 56° | 56° | 56° | 57° | 57° |
| RunScore | | | | | | | |
Chicago Marathon 2007
Oct 7, 2007
Partly cloudy throughout the day.
Low: 70°, High: 88°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 71° | 75° | 79° | 82° | 84° | 86° | 86° |
| Feel | 71° | 75° | 79° | 85° | 87° | 88° | 88° |
| Rain | - | - | - | - | - | - | - |
| Wind | 4mph | 5mph | 7mph | 6mph | 9mph | 5mph | 7mph |
| Dew | 65° | 66° | 67° | 67° | 68° | 66° | 66° |
| RunScore | | | | | | | |
Chicago Marathon 2006
Oct 22, 2006
Cloudy skies throughout the day with rain clearing later.
Low: 35°, High: 48°, Moderate Rain
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 38° | 38° | 38° | 39° | 40° | 40° | 40° |
| Feel | 30° | 30° | 30° | 31° | 33° | 33° | 32° |
| Rain | - | - | light | - | - | - | - |
| Wind | 14mph | 13mph | 14mph | 13mph | 10mph | 12mph | 14mph |
| Dew | 34° | 34° | 35° | 34° | 34° | 32° | 31° |
| RunScore | | | | | | | |
Chicago Marathon 2005
Oct 9, 2005
Clearing in the afternoon.
Low: 50°, High: 59°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 51° | 52° | 54° | 56° | 57° | 57° | 58° |
| Feel | 51° | 52° | 54° | 56° | 57° | 57° | 58° |
| Rain | - | - | - | - | - | - | - |
| Wind | 7mph | 9mph | 11mph | 14mph | 16mph | 13mph | 12mph |
| Dew | 43° | 43° | 43° | 43° | 43° | 43° | 43° |
| RunScore | | | | | | | |
Chicago Marathon 2004
Oct 10, 2004
Partly cloudy throughout the day.
Low: 45°, High: 61°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 50° | 54° | 59° | 59° | 61° | 61° | 61° |
| Feel | 48° | 54° | 59° | 59° | 61° | 61° | 61° |
| Rain | - | - | - | - | - | - | - |
| Wind | 5mph | 7mph | 15mph | 11mph | 10mph | 14mph | 13mph |
| Dew | 45° | 45° | 43° | 42° | 43° | 43° | 41° |
| RunScore | | | | | | | |
Chicago Marathon 2003
Oct 12, 2003
Clear conditions throughout the day with early morning rain.
Low: 47°, High: 70°, Light Rain
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 48° | 53° | 57° | 61° | 64° | 66° | 68° |
| Feel | 44° | 53° | 57° | 61° | 64° | 66° | 68° |
| Rain | - | - | - | - | - | - | - |
| Wind | 9mph | 10mph | 10mph | 12mph | 12mph | 14mph | 15mph |
| Dew | 45° | 45° | 45° | 43° | 41° | 39° | 37° |
| RunScore | | | | | | | |
Chicago Marathon 2002
Oct 13, 2002
Clear conditions throughout the day.
Low: 39°, High: 52°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 39° | 41° | 43° | 45° | 46° | 47° | 48° |
| Feel | 32° | 32° | 35° | 37° | 39° | 40° | 43° |
| Rain | - | - | - | - | - | - | - |
| Wind | 10mph | 17mph | 15mph | 17mph | 16mph | 16mph | 12mph |
| Dew | 27° | 27° | 25° | 22° | 20° | 21° | 22° |
| RunScore | | | | | | | |
Chicago Marathon 2001
Oct 7, 2001
Partly cloudy throughout the day.
Low: 33°, High: 52°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 35° | 41° | 45° | 46° | 50° | 50° | 52° |
| Feel | 35° | 41° | 42° | 43° | 48° | 48° | 52° |
| Rain | - | - | - | - | - | - | - |
| Wind | 0mph | 0mph | 5mph | 7mph | 5mph | 6mph | 6mph |
| Dew | 28° | 27° | 26° | 20° | 22° | 25° | 24° |
| RunScore | | | | | | | |
Chicago Marathon 2000
Oct 22, 2000
Becoming cloudy in the afternoon.
Low: 53°, High: 68°
| Time | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|
| Temp | 54° | 56° | 58° | 63° | 63° | 65° | 68° |
| Feel | 54° | 56° | 58° | 63° | 63° | 65° | 68° |
| Rain | - | - | - | - | - | - | - |
| Wind | 7mph | 7mph | 6mph | 5mph | 4mph | 4mph | 5mph |
| Dew | 49° | 49° | 51° | 52° | 52° | 54° | 54° |
| RunScore | | | | | | | |