Logo

OPSF 50/50 Trail Race

Poland, United States • 21 Mar 2026

The OPSF 50/50 Trail Race is a well-established running event held in Owen-Putnam State Forest near Poland, Indiana, about an hour from Indianapolis. Organized by the Indiana Trail Running Association, it offers multiple distances: a 50-mile ultra, a 50K, a 14-mile run, and a 10K trail race. The course features mostly single-track and horse trails with rolling hills, considered one of Indiana’s toughest trail races. The race follows a lollipop-shaped route with aid stations, and participants must carry their own water as no cups are provided. The event has a friendly, low-key atmosphere and includes awards, finisher medals, and participant shirts. Visit the organization's website for the most recent information.

United States Indiana Poland

Race information

Website Registration
50 mi
50m
50 km
50k
14 mi
14 Miler
10 km
10k Trail Race
Visit the organization's website for the most recent information.
Trail runs nearby

Hawthorn Half Day

Terre Haute - 25 mi from Poland

The Hawthorn Half Day Relay & Ultra is an exciting endurance event taking place in Terre Haute, Indiana, established in 2006. Participants can choose between 6-hour and 12-hour races, with options for solo runners, teams of various sizes, and walkers. The course features a scenic 5K loop of trail an..

MoMoFo100k

Martinsville - 28 mi from Poland

The MoMoFo 100k and 20 Mile Fun Run is a challenging trail running event held in Morgan Monroe State Forest, Martinsville, Indiana. The 100k race features about 7,500 feet of climbing over a course that is 85% single track, 11% forest service road, and 4% paved road, showcasing old growth forests, r..

Vulture Vista Ultra

Greencastle - 14 mi from Poland

The Vulture Vista Ultra is an exciting running event set to take place at DePauw Nature Park in Greencastle, Indiana. This year, the event features multiple challenges, including 6-hour and 12-hour solo and relay races, as well as a 4.5-mile challenge designed for runners of all abilities. Participa..

Dino- Griffin 10K Bonus Run

Terre Haute - 25 mi from Poland

The Dino-Griffin 10K Bonus Run is a trail running event held at Griffin Bike Park in Terre Haute, Indiana. The race features a 10-kilometer course consisting of two laps around Stryker Lake, with moderate terrain, rolling hills, and generally stable footing. The wide trails allow for easy passing an..

FroMoMoFo 20 Miler

Martinsville - 28 mi from Poland

The FroMoMoFo 20 Miler and 10 Mile Fun Run is an exciting winter trail running event taking place at the Morgan Monroe State Forest in Martinsville, Indiana. Participants can choose between a 20-mile run, which consists of two loops of the scenic Three Lakes loop trail, or a 10-mile run with one loo..