Trail Running calendar near Ballwin 2026-2027

A loop-based trail event in Foristell, Missouri on August 1, 2026, where runners repeat a 3.1 mile (5K) loop each hour and may stop after any completed loop. Results combine times for all completed loops to determine rankings.

Three 10K night trail races in Wildwood MO with increasing climb per mile across a three week series, organized by Terrain Trail Runners.

Timed 6 hour and 3 hour runs on a 1.01 Mile loop around the Watershed Nature Center in Edwardsville, IL. The event limits entries, requires lights after sunset, and posts live results during the event.

A three-leg relay on the Ozark Trail near Steelville MO combining running, mountain biking and paddling for teams of two with proceeds supporting the Ozark Trail Association.

Looped trail events at Cliff Cave Park near St Louis offering flexible 5K to 50K format plus continuous 40 and 50 mile challenges with central aid and lap timing.

A continuous 3.1-mile loop trail race at Cliff Cave Park with rolling hills, river overlooks, and a fully stocked aid station each lap. Options are 40 or 50 miles with a 12-hour cutoff and designated crew and pacer access.

Trail races at the Lewis and Clark Trailhead near St Charles include a 13.1 miles half plus separate 8 miles and 5 miles loops. Aid stations offer water and Tailwind and each runner receives a reusable cup at packet pickup.

Trail runs and a ruck event at Queeny Park on September 5, 2026. Events include chip timing, lap aid stations, finisher medals, age group awards, event shirts and backpacks.

An open 5K running event in Forest Park, Saint Louis, on 12 September 2026 with a $15 entry fee; the festival also features high school cross country competition and open registration from 23 April 2026.

A 5K trail run or walk at Patriot's Park in Greenville on 09/26/2026 focused on community support for children and families affected by childhood cancer, with registration open 03/02/2026 and a $35 fee.

Trail races at Greensfelder County Park featuring a 53K, a 13.1 mile trail half marathon and a ruck division on technical singletrack with aid stations and a 10 hour limit.

A family-friendly color run in Freeburg, IL combining vibrant color stations with a wooded memorial route and a focus on preventing distracted driving.

Run the scenic Katy Trail with 5k 10k or half marathon options followed by a celebration at The Wine Cafe featuring whiskey sampling coffee and local donuts in St. Charles.

A festive October race at Legacy Park in Cottleville offering 1 mile, 5K, 10K and virtual options with glow in the dark medals, costume encouragement, post-race food and awards across multiple age groups.

Weekend summit in Troy, Missouri offering camping, clinics, hikes, a night trail run and shared meals for women; free community event capped at 20 participants.

A rugged 13-mile half-marathon on the Ozark Trail in Middle Brook, MO, featuring technical terrain and scenic landmarks, with proceeds benefiting the Ozark Trail Association.

Experience technical trails and rolling hills at Greensfelder Park with distance options ranging from 8 miles to a 50K ultra. This cup free event features a repeating loop format through scenic Missouri woodlands.

A repeating loop backyard ultra at the New Town amphitheater in Saint Charles, Missouri, with a 4.17 mile runner loop and a 2.6 mile ruck division that includes weight minimums. Race proceeds support MSMDS research.

Timed 6 and 12 hour endurance runs on a USATF certified 1.17 mile paved loop at Minnie Ha Ha Park, cupless and chip timed with aid station and finishers medals.

An annual open 5K at Jefferson Barracks Park in Saint Louis held alongside the Hancock Cross Country Invitational. The race welcomes all ages; registration opens August 1, 2026, with a $15 fee and closes on race day.