Indy Monumental Marathon 2025 Dates. Over 16,000 participants will line up in the heart. On behalf of cno financial group, iโm honored to welcome you to the 2025 cno financial indianapolis monumental marathon, half marathon and 5k.
The 17th cno financial indianapolis monumental marathon is november 9, 2025. Saturday, november 9, 2025 | start time 8:35 a.m.