Heartbreaker Practice is a running group in Chicago offering free sessions and training for the 2026 marathon.

Heartbreaker Practice is a running group based in Chicago, Illinois, dedicated to helping runners improve their speed and endurance through fun, coach-led sessions. The group operates out of Lincoln Park at 2148 N Halsted St and offers a variety of training options to suit different fitness levels. Members can participate in Heartbreaker Practice sessions, which are continuous tempo workouts covering 4 to 9 miles along the Lakefront, featuring a warm-up, active stretch, drills, and cooldown. Additionally, the group hosts Signature Speed sessions ranging from 3 to 6 miles designed to elevate a runner's game, and The Long Run, a pace group for marathon training from June through October. All runs start and end at the store in Lincoln Park where gear storage bins are available. The group provides weekly free sessions with specific schedules including Tuesday, Thursday, and Saturday runs, as well as weekday and weekend hours for general running. Their mission, established in 2009, remains to make runners faster and make running fun. To sign up for training starting June 1st or for upcoming events, interested parties are encouraged to follow the group on Instagram at @heartbreak.chi.