Half Marathon races near Decatur

Decatur Base Miles

Decatur hosts 2 Half Marathon races in 2026 within 80 km of the city centre — upcoming dates, recurring series, and other races nearby, all in one place.

Locals run Decatur on park paths, lake roads, and conservation trails. Decatur Running Club gives the scene its spine, with monthly board meetings at the Hill Senior Center and a calendar that stays busy. The course covers 00 km with 78 m of gain. The course covers 61 km with 50 m of gain. Sand Creek Trail Run brings fast rolling terrain. DRC Rock Springs Ramble keeps Rock Springs in the mix. Fairview Park handles The Big Obstacle 3K and Run United 5K. The Big Run - Decatur, Il carries the summer vibe.

Locals ride Decatur for base miles around Lake Decatur, west-side path work, and short gravel bites. The route runs 2 miles from Greendell Park to Rock Springs Conservation Area. Garman Park gives cyclists wooded multi-use trails. The south side loop is easier but still enjoyable. The north side loop is more technical, with some switchbacks, bridges, and hills. The north side loop covers 1 km on pavement with 367 meters of gain. 2% maximum grade. Decatur Bicycle Club anchors the local scene. Decatur Bicycle Shoppe rolls a Thursday summer ride at 6 pm for about 20 miles.

May to September gives Decatur its main outdoor rhythm. Spokes Women meet at 6 pm at the dog park in Fairview Park on the 1st and 3rd Wednesdays from May to September, and that block feels right for Z2 rides and steady runs. July 4 brings Ring My Bell 2026. September stacks the Amish Country Bicycle Tour, Prairie Pedal, and Shoreline Classic. October brings Sand Creek Trail Run and Allerton Park Trail Run. November keeps runners honest with the 2025 Turkey Trot. Winter changes the tempo. Decatur Running Club keeps a marker on the calendar with Penguin in the Park on March 28, while cyclists wait for the summer Thursday rides to come back.