OPSF 50/50 Trail Race

OPSF 50/50 Trail Race

OPSF 50/50 is a trail running event in Owen-Putnam State Forest near Spencer, Indiana. It offers multiple distances on rugged single-track and horse trails with some fire road. The 50K course includes over 4500 elevation gain over 50 kilometers and the terrain has year-round springs that can create muddy sections even in dry weather.

Distances

• 10K single counter-clockwise loop
• 14 mile one counter-clockwise lollipop loop
• 50K two full lollipop loops plus a short finishing loop (~2.8 miles)
• 50 mile multiple full loops with a final short loop to reach the distance (~50.6 miles)

The course is described as a lollipop: an out-and-back “stick” to Aid A plus a loop that passes Aid B and returns to Aid A. Aid stations and Start/Finish food are for runners only and will be pre-packaged. The event is cupless; all runners must carry the ability to hold 20 oz of water on their person at all times.

Race rules include no littering, no pets on the course, and no short cutting; violations may be grounds for disqualification. Start/Finish is at Horse Campground (4850 Fishcreek Rd, Poland, IN) with Aid A at the Mountain Bike Trailhead and Aid B at Rattlesnake Campground. Shuttles serve 10K and 14 mile participants from the Owen County Family YMCA; 50K and 50 mile participants use parking at Horse Campground. Visit the organization's website for the most recent information.

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