Set in picturesque Vienna, Illinois, the Riverboat Marathon Series - Day 7 on April 19, 2026, offers runners a captivating experience on the famed Tunnel Hill Trail. As the final leg of the weeklong Riverboat Series, this event welcomes participants of all levels to tackle either the 26.2-mile marathon or the 13.1-mile half marathon. The course itself features a mostly crushed rock surface with some asphalt sections, winding through scenic terrain with moderate shade. Renowned for its "fast and flat" profile, the multi-loop design boasts a minimal elevation gain of just 23 feet per lap, making it an excellent choice for those chasing personal bests or simply enjoying a consistent stride.

Runners can anticipate exceptional support and a vibrant atmosphere. Thanks to the unique multi-loop setup, a single, "giant aid station" acts as a central hub, brimming with an impressive array of refreshments. Expect everything from fruits, jelly beans, and sandwiches to water, Gatorade, and hot coffee, all powered by the series' dedicated "Loony Lunchbox" mobile kitchen. Mainly Marathons, the organizer, is celebrated for its "no runner left behind" policy, ensuring a supportive environment for every participant, including walkers. This race is not just about the miles; it's about the community, the award-winning medals, and the unique chance to be part of a celebrated national series.

Typical race day conditions in Vienna, IL, present agreeable weather, with highs around 71F and lows around 48F, alongside a modest 19% chance of precipitation. Packet pickup and race day registration are available at Vienna City Park, with an optional early start for marathon and half marathon participants at 5:30 AM (CT). Come and experience the charm of Vienna and the camaraderie of a truly runner-focused event.