Indy Monumental Marathon 2025 Location. 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. Our city will once again host one of the 15 largest marathons in the us.
Celebrate 17 years of running indy at the 2025 cno financial indianapolis monumental marathon! The cno financial indianapolis monumental marathon is a top 15 marathon in the us and is nationally recognized by runners’ world as one of “ten great marathons for first.