The 2025 event has concluded.

Indianapolis Monumental Marathon

Indianapolis, IN, USA • November 08, 2025
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partly-cloudy-day Partly cloudy throughout the day.

The Indianapolis Monumental Marathon (also known as the CNO Financial Group Indianapolis Monumental Marathon for sponsorship reasons) is an annual road marathon usually held in early November in downtown Indianapolis, Indiana, United States. The marathon was first held in 2008 and includes a half marathon and 5K run. Since 2016, it has been the only full fall marathon run in Indianapolis. In 2015, it claimed to have become one of the 20 largest marathons in the U.S. Wikipedia

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When is the 2025 Indianapolis Monumental Marathon?

The 2025 Indianapolis Monumental Marathon will be held on Saturday November 8, 2025.

Is the Indianapolis Monumental Marathon a Boston Marathon Qualfier?

Yes, the Indianapolis Monumental Marathon is an official Boston Marathon qualifier.

Historical Weather

Based on 16 years of data
Avg Temp
56°F
L:40°H:56°
RunScore
8
Conditions
Rain Freq
13%
2 of 16 yrs
Wind9mph
Dew38°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults

2024 Indianapolis Monumental Marathon

Partly cloudy throughout the day.

2024
partly-cloudy-day
47°/62°-
8

2023 Indianapolis Monumental Marathon

Cloudy skies throughout the day with rain.

2023
cloudy
49°/55°-
8

2022 Indianapolis Monumental Marathon

Partly cloudy throughout the day with morning rain.

2022
rain
60°/67°Light
6

2021 Indianapolis Monumental Marathon

Clear conditions throughout the day.

2021
clear-day
32°/57°-
8

2019 Indianapolis Monumental Marathon

Clearing in the afternoon.

2019
cloudy
29°/48°-
6

2018 Indianapolis Monumental Marathon

Partly cloudy throughout the day.

2018
partly-cloudy-day
35°/54°-
8

2017 Indianapolis Monumental Marathon

Partly cloudy throughout the day.

2017
cloudy
46°/59°-
9

2016 Indianapolis Monumental Marathon

Partly cloudy throughout the day.

2016
clear-day
39°/63°-
8

2015 Indianapolis Monumental Marathon

Partly cloudy throughout the day with late afternoon rain.

2015
partly-cloudy-day
40°/56°-
8

2014 Indianapolis Monumental Marathon

Clearing in the afternoon.

2014
partly-cloudy-day
30°/43°-
6

2013 Indianapolis Monumental Marathon

Partly cloudy throughout the day with early morning rain.

2013
partly-cloudy-day
43°/52°-
7

2012 Indianapolis Monumental Marathon

Partly cloudy throughout the day with afternoon rain.

2012
cloudy
37°/40°Light
7

2011 Indianapolis Monumental Marathon

Clear conditions throughout the day.

2011
partly-cloudy-day
34°/56°-
8

2010 Indianapolis Monumental Marathon

Partly cloudy throughout the day.

2010
partly-cloudy-day
29°/45°-
8

2009 Indianapolis Monumental Marathon

Clear conditions throughout the day.

2009
clear-day
52°/69°-
8

2008 Indianapolis Monumental Marathon

Clearing in the afternoon.

2008
partly-cloudy-day
48°/72°-
8
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