Indy Monumental Marathon 2025 Route. The cno financial indianapolis monumental marathon is on october 28, 2023. Here's what you need to know about the 2025 monumental marathon.
Celebrate 17 years of running indy at the 2025 cno financial indianapolis monumental marathon! Now one of the 15 largest marathons in the us, the cno financial indianapolis monumental marathon is the ideal fall marathon for everyone from the first time marathon runner to elite.