OPSF 50/50 Trail Run


Mar 26, 2022 at 7:00 AM

OPSF 50/50 Trail Run

4850 Fishcreek Rd

Spencer IN, 47868


Event Facebook page

Entry Fee $55
(Lowest or Early Registration)

Entry Fee 2 $95
(Highest or Late Registration)

Prize Money: no


  • 13.1M
  • 50K
  • 50M
  • 14M

Type: Ultra

Participant Limit: 200

Course Map: Download Map

Starting Elevation: 790

High Point: 850

Percent of the course on un-paved trails: 90%

First Year of the Event: 1993


OPSF 50|50 is a long standing Indiana tradition. This low key event in Owen-Putnam State Forest is provided by non-profit Indiana Trail Running Association (ITRA), and it’s an opportunity for people to run a lesser known Indiana course (even though it’s only an hour from Indianapolis!). Come join us!

The OPSF 50|50 race is a 50 mile and 50k distance race beginning at 7:00 a.m. and a 14 mile Run beginning at 11:00 a.m.

Weather: Spring in Indiana can provide interesting weather. 2018 brought a winter storm with sleet and snow! And then 2019 brought a 50° day and dry conditions! Please watch the weather and prepare accordingly!

PLEASE NOTE: This race is a CUPLESS race. This means you must have the ability to carry 20 oz of water on your person at all times. No cups will be provided at aid stations. We will only provide prepackaged food items at aid stations. There will be no post-race dinner.  Masks will be required when entering aid stations until you exit. Thank you for understanding and following our safety guidelines.  Of course, we will continue to monitor if any changes are required due to the COVID-19 Pandemic concerns.

Set in Owen-Putnam State Forest and beginning at Horse Campground, runners traverse a 14 mile course consisting of 90% single track and horse trails with a few sections of fire road.

The course is a lollipop: Start/Finish to Aid A is the “stick” and a loop from Aid A through Aid B and back to Aid A is the delicious “pop”. Aid A to the Start/Finish completes the lollipop.

The 50mile runners will run out the lollipop counter clockwise, do two “pops”, and then return to the Start/Finish. 50k runners will then do a counter clockwise lollipop with a truncated “pop”.

14 mile runners do one counter clockwise lollipop. Yum!

See the Course Map for more details.

Trails are rugged and there will be mud rain or shine! It’s the toughest trail race in Indiana!


Race event photo
Race event photo
Race event photo


Past Event Dates

Held on Mar 26, 2022

Held on Mar 21, 2020

Held on Mar 23, 2019

Held on Mar 24, 2018

Held on Mar 25, 2017

Held on Nov 05, 2005

Held on Nov 02, 2002

Held on Nov 03, 2001

Held on Nov 04, 2000

Held on Nov 06, 1999

Held on Nov 07, 1998

Held on Nov 01, 1997

Event Results

View 2021 Results

View 2019 Results

View 2018 Results