What better way to celebrate Earth Day than with your feet? You'll run 13.1 miles, traversing historic Gambier and some of Ohio's most scenic countryside on the expertly-maintained Kokosing Gap Trail.

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Participants of all abilities are invited to walk, run or a little of both. Hey, as long as you're out there having fun and challenging yourself, we don't care if you're setting a new world record or crawling across the finish line!

The Earth Day Challenge is a fully staffed and supported event with security, medical and aid stations. While you're pushing your body, we'll be treating it right; the aid stations and post-race spread will be chock full of nutritious and delicious foods and beverages.

Not quite up for 13.1 miles?  No problem!

For the first time this year you can run either the half marathon or a four-mile race.  Both races will wind through historic Gambier.  Four milers will then finish on the track and the half marathoners will head out onto the unforgettable Kokosing Gap trail.

All our proceeds benefit local outdoor fitness initiatives, such as trail runs, cycling events, and children's programs.



Post race activities

After the race runners will be treated to a post-post race spread inside the Kenyon Athletic Center.  And after you catch your breath you are welcome to hit the showers in the locker room facilities in the Athletic Center before visiting the Earth Day Festival which begins at 10 AM.  Enjoy this FREE event with exhibits, vendors, kids’ activities, farm marketers, live music & more.  The event uniquely brings together the best in local resources; celebrate Earth Day by shopping green, enjoying entertainment, and connecting with groups that support healthy living for ourselves and our world.

Race Basics

Sunday, April 21, 2013


Half Marathon: $40 through 3/1. $50 3/2 - 4/1. $60 4/2 through race day
Half Marathon Student: $25
4 Miler: $15 through 3/1. $20 3/2-4/1. $25 4/2 through race day
4 Miler Student: $15

Shirts guaranteed for participants who register before April 1st

Online registration closes Wednesday 4/17 at midnight. You can still register on race day as space allows.

Click HERE for your Pre-race instructions

All Walkers begin at 8:00am
All Runners begin at 8:00am

Click here for common FAQ's

Race Details

The Earth Day Challenge Half Marathon and the Earth Day Challenge 4 Miler will start and end at the Kenyon Athletic Center on the campus of Kenyon College. Participants will complete a 4‑mile loop through historic Gambier with a portion run on Kenyon's tree-lined Middle Path. Upon completing the Gambier Loop, 4 Miler runners and walkers will finish on the track and the Half Marathoners will head out onto the Kokosing Gap Trail for a beautiful and flat out-and-back before returning to finish on the track.

The course is mostly flat, with one hill at about ½ mile. Gambier is a great location for spectators, with good viewing throughout the village. It is only a short walk from downtown Gambier to the finish line!

The Kokosing Gap Trail is a wonderfully maintained corridor which affords some truly amazing views of the Kokosing State Scenic River and the Knox County countryside.

Course Maps / Parking

Half Marathon Course Map

Half Marathon Start/Finish Map

Four Mile Course Map

Four Mile Start/Finish Map

Parking Location Map

Course Cut-Offs

The course will be open from 8 AM to11:30 AM. The course time limit will be strictly enforced.

Packet Pickup

Friday, April 19th

  • 3 pm: Packet pickup available at the Kenyon Athletic Center.
  • 6 pm: Packet pickup closes.

Saturday, April 20th

  • 3 pm: Packet pickupavailable at the Kenyon Athletic Center.
  • 6 pm: Packet pickup closes.

Sunday, April 21st

  • 7:00 am: Packet pickup available at the Kenyon Athletic Center.
  • 8:00am: Race start for both the half marathon and the 4 miler.
  • 11:30am: Course closes


Top three finishers in every age group will receive a running hat.  The top three finishers overall will also receive an exclusive Earth Day Challenge Turkish cotton workout towel.

Age groups:
19 and under
20 to 29
30 to 39
40 to 49
50 to 59
60 and over

All half marathon finishers will receive an Earth Day Challenge mug and will be invited to pick up a complimentary tree to plant.



Where / When / How
  • Date: 4/21/2013
  • Location: Kenyon College