Indianapolis Monumental Marathon

Indianapolis, IN, USA • November 07, 2026

Race Day Weather

45°

60° high

Breezy

Dry

Cool start, tailwind boost

Runners will face a cool start at 45°F, warming to 60°F by race end. With winds peaking at 11 mph, there will be headwinds in the early and late miles, specifically between Miles 1-3 and 20-27. Runners should adjust their pacing strategy in the headwind segments, particularly in the final miles, and take advantage of the tailwinds during Miles 5-13 for faster splits.

Race day forecast available in 207 days

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

Pre-raceRace windowPost-race

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

FAQ

When is the 2026 Indianapolis Monumental Marathon?

The 2026 Indianapolis Monumental Marathon will be held on Saturday November 7, 2026.

Is the Indianapolis Monumental Marathon a Boston Marathon Qualifier?

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

What will the weather be like for the 2026 Indianapolis Monumental Marathon?

The forecast calls for a high of 60°F and a low of 45°F with a 0% chance of rain.

Historical Weather

Based on 17 years of data

Avg Temp

56°F

L:41° H:56°

RunScore

Conditions

Rain Freq

12%

2 of 17 yrs

Wind9mph

Dew38°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Indianapolis Monumental Marathon Partly cloudy throughout the day. 2025	41°/56°	-	40°
2024 Indianapolis Monumental Marathon Partly cloudy throughout the day. 2024	47°/62°	-	41°
2023 Indianapolis Monumental Marathon Cloudy skies throughout the day with rain. 2023	49°/55°	-	44°
2022 Indianapolis Monumental Marathon Partly cloudy throughout the day with morning rain. 2022	60°/67°	Light	55°
2021 Indianapolis Monumental Marathon Clear conditions throughout the day. 2021	32°/57°	-	30°
2019 Indianapolis Monumental Marathon Clearing in the afternoon. 2019	29°/48°	-	21°
2018 Indianapolis Monumental Marathon Partly cloudy throughout the day. 2018	35°/54°	-	38°
2017 Indianapolis Monumental Marathon Partly cloudy throughout the day. 2017	46°/59°	-	49°
2016 Indianapolis Monumental Marathon Partly cloudy throughout the day. 2016	39°/63°	-	39°
2015 Indianapolis Monumental Marathon Partly cloudy throughout the day with late afternoon rain. 2015	40°/56°	-	35°
2014 Indianapolis Monumental Marathon Clearing in the afternoon. 2014	30°/43°	-	24°
2013 Indianapolis Monumental Marathon Partly cloudy throughout the day with early morning rain. 2013	43°/52°	-	37°
2012 Indianapolis Monumental Marathon Partly cloudy throughout the day with afternoon rain. 2012	37°/40°	Light	34°
2011 Indianapolis Monumental Marathon Clear conditions throughout the day. 2011	34°/56°	-	31°
2010 Indianapolis Monumental Marathon Partly cloudy throughout the day. 2010	29°/45°	-	22°
2009 Indianapolis Monumental Marathon Clear conditions throughout the day. 2009	52°/69°	-	45°
2008 Indianapolis Monumental Marathon Clearing in the afternoon. 2008	48°/72°	-	46°

More IN Races

OneAmerica 500 Festival Mini-Marathon

2026-05-02 · Indianapolis, IN, USA

Honest Abe Trail Run Marathon

2026-09-20 · Lincoln City, IN, USA

Back Your Badge Marathon

2026-09-20 · Plainfield, IN, USA

Cummins Mill Race Marathon

2026-09-26 · Columbus, IN, USA

Mill Race Marathon

2026-09-26 · Columbus, IN, USA

Tecumseh Trail Marathon

2026-10-17 · Bloomington, IN, USA