Thunderbunny Details

Athens County’s first ever ultramarathon! The Thunderbunny 50K comes to Strouds Run State Park and will show off some of the best trails in the region and give participants a great experience, whether you are a first timer or a trail veteran. The course starts and ends on the famous 3 mile Thunderbunny Trail, and in between runners will complete a loop around Dow Lake and run up and over a ridge to overlook the city of Athens! With the course boasting 95% singletrack trail, this will quickly turn into a favorite for pure trail runners. While showcasing some of the great Appalachian Foothills that Athens is known for, this is also a very runnable course so it is a perfect option for your first ultramarathon or first trail race! Along with the 50K, there will be two shorter course options of 25K and 12K to choose from.

Use the quick links below to easily navigate through all race details on this page.
Basic Details

Registration Opens:  11/10/2022

Permits:  This event is held in accordance with special use permits from the Ohio Department of Natural Resources for Strouds Run State Park.  Please be considerate of the land and other users to ensure the future of the Thunderbunny.

*NEW FOR 2022!*

The 12K will now be on Friday evening, with the 50K and 25K on Saturday.

Dates:  May 6-7, 2022
Location:  Strouds Run State Park
Distance:  50K, 25K, 12K

Race Day Schedules: 


12K Pre-Race Meeting: 4:40pm

12K Race Start: 5pm

12K Race Close: 8pm


50K and 25K Pre-Race Meeting: 7:40am
50K and 25K Race Start: 8am
50K and 25K Race Close: 5pm (9 hour cutoff)

50K and 25K Cutoff Information:

The course cutoff for the Thunderbunny 50K and 25K is 9 hours.  Please view the 50K and 25K aid station charts on the course information pages to see a detailed chart of these cutoff times.  The 25K cutoff will coincide with the 50K cutoff times.  Both races cutoff requirements will begin at the Dow Lake Dam Aid Station.    


Please note that the cutoff times are when aid stations will pull you from the course.  Please respect the organizers decision of cutoff times and understand these times when entering Thunderbunny. If you arrive at an aid station after the cutoff times you will be told to stop the race, and will be transported back to the finish line.

12K Cutoff Information:

While we do not have a hard cutoff for the 12K course, with the race starting at 5:00pm on Friday evening, we are encouraging everyone to be aware of the sunset time of 8:30pm.  If you think you will take longer than ~3 hours, please be prepared and ready to carry a headlamp or light with you.  3 hours for the 12K is 24 minute pace per mile.


Now Register for the 50K/12K or 25K/12K Combo!

  • Starting in 2022, the 12K race distance will be held on Friday evening instead of Saturday morning.  

  • Participants now have the option to run the 12K on Friday and either the 25K or 50K on Saturday morning and receive a special "Thunder" or "Bunny" combo award!

  • Just "add-on" the 12K when registering for the 50K or 25K!

"Thunder" Combo (50K+12K)
"Bunny" Combo (25K+12K)
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Runners that complete the above combos will receive a special finishers award!
Registration and Pricing


  • No Paper Registration or Race-Day Registration.  All participants must register online before the race close deadline or before the race fills. 

  • This race is limited to 300 participants in Friday's 12K and 300 runners in Saturday's 25K and 50K (combined). Once we reach those capacities regular registration will be closed immediately, and we will move to a waitlist (see below).

  • To register and pay online follow this link or click the registration tab above and complete the race registration instructions. You will receive confirmation e-mail upon completion.

Registration Open Date: 11/10/2021

Registration Close Date: Monday May 2, 2022

  • 50K:  $70 after opening, $80 after Feb. 1, $90 after April 1

  • 25K:  $50 after opening, $60 after Feb. 1, $70 after April 1

  • 12K:  $30 after opening, $35 after Feb. 1, $40 after April 1

    • *add $10 for the 12K if you register for the 50K or 25K!​

Combination Registration:
Register for the 50K or 25K on Saturday, ADD-ON the 12K race on Friday evening for just $10 more!
  • 50K + 12K:  runners will be eligible for the "THUNDER" combo

  • 25K + 12K: runners will be eligible for the "BUNNY" combo


*There is a small processing fee that is charged when registering on  You also have to option to create an account on before registering.  We will be hosting our registration for future SEOTR events here.* 

Walkers are welcome to register for the Thunderbunny 12K!

Capacity and Waitlist

Once the 12K registration reaches 300 participants and the 25K and 50K reach 300 total participants regular registration will be closed, but you'll still be able to register for the waitlist until the registration close date. 


As runners withdraw from the race leading up to the event, the next person on the waitlist will be notified and will have the opportunity to move onto the entry list. 

The next person invited into the race from the waitlist will coincide with what race the person withdrawing was in. (ex. someone from 50K withdraws, someone on the waitlist for the 50K is invited in).  


You do not get charged to be on the waitlist, and your credit card will only be charged the entry fee once you accept your invite from the waitlist.  You'll be notified via email once this happens, and you'll have the option to accept or decline your entry.  We will accept people off the waitlist until the registration close date on the Monday before the race.

Participant Swag


Performance Shirts:  Each entrant will receive a technical short-sleeve race shirt with a special Thunderbunny design on the front! Shirts are gender specific and you'll be able to select 'unisex' or 'female' styled sizes when registering.  If you are a female and wish to have a traditionally cut shirt, simply select a "unisex" size when registering.


Finishers Award:  Finishers of the 25K and 50K will receive a finishers award at the finish line!  Finishers awards vary from years to year, and can be items such as medallions, cups, or etc. etc.  It is up to the race organization on what the finishers award is.  12K runners will not receive an award when finishing, unless you earn a category award (below).


Category Awards


1st Place Overall M/F

2nd Place Overall M/F

3rd Place Overall M/F

4th Place Overall M/F

5th Place Overall M/F


1st Place Master (40-49) M/F

1st Place Grandmaster (50-59) M/F

1st Place Supermaster (60+) M/F



1st Place Overall M/F

2nd Place Overall M/F

3rd Place Overall M/F


1st Place Master (40-49) M/F

1st Place Grandmaster (50-59) M/F

1st Place Supermaster (60+) M/F



1st Place Overall M/F

2nd Place Overall M/F

3rd Place Overall M/F

*Separate awards will be presented to the 12K College Runners, who will make up the Collegiate Trail Running National Championship.  For all information about the Collegiate Trail Running National Championship, and the prize money and awards associated with it, please CLICK HERE.

Packet Pick-Up


Early Packet Pick-Up:



Saturday Morning Packet Pick-Up

6:00am - 7:30am


Strouds Run Beach Parking Lot (start/finish area)

12981 Strouds Run Rd.

Athens, OH 45701

Race-Day Parking


There is ample parking at the Strouds Run State Park Beach Parking Lot, the location of the Start/Finish Area.  With that said, SEOTR still recommends a couple of ways to make the parking lot less crowded and easier to navigate on race morning.


Below is a picture of the parking lot area at the Strouds Run Beach to help you get familiar with the area

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Crew and Spectator Guide


Open the link below for all details on how to crew and spectate the race by traveling to different aid stations!

Rules and Policies​​

Waiver Form:  To participate in the Thunderbunny Trail Races you are required to complete and sign all waivers.  If under the age of 18 yrs old, a parent or guardian must sign waiver form.

Refund/Rollover Policy:

Like most events of this nature and because items for the event are purchased months in advance of the race, the Thunderbunny Trail Races cannot provide full refunds close to the race date, but we follow a refund and rollover schedule that will help give a little back to those who need to withdraw from the race.  Our "Refund/Rollover Window" is as follows:

  • 45 or more days before the race = 100% refund or rollover

  • 20-44 days before the race = 50% refund or rollover

  • 7-19 days before the race = 25% rollover

  • 0-6 days before the race = 0% refund or rollover

To request a refund/rollover:  You must have an UltraSignup account to request your refund/rollover.  If you registered as a "guest" please email the race director and we will complete the process.  Follow these steps:

  1. Log in to

  2. Go into your account info and click "Registration History."

  3. Click "edit" next to the race you wish to withdraw from.

  4. After this scroll to the bottom of the page and click the red "Cancel Registration" button.

  5. Once you select cancel registration a box will appear giving you an option to receiving either a Refund or Rollover.

  6. Click "Process."

Please note that in some cases a bank will not accept a refund back onto a credit card if the original purchase was made over 90 days ago; in that case the race director will be notified and will send your refund via a check through the mail.

Further Rollover Policy: 

  • Inside 20 days of the event runners may still "Roll Over" 25% of their entry price to the next year's event until 7 days before the event.

  • Inside 7 days before the event we will not process any refunds or accept any rollovers. 

  • To roll over (defer) your entry into next year's event once the "refund window" has ended (under 20 days) you must email the race director.

  • Once your entry has been "rolled over" to next year's event you will be removed to the current year's race, then receive an invite into the next year's event via email once that registration has opened. 

  • Your Rollover credit is only valid for the next year's event and cannot be applied to other events.

Transfer Policy:  SEOTR does not allow transfer of bibs at any of our races and strictly prohibits runners selling their bibs to other runners, wearing someone else's bib, or recreating a look-a-like.  This is considered "Banditing" and it will get you banned to all future SEOTR events.

Distance Switch: Participants may transfer distances until 4 day prior to the event.  If you made an account on UltraSignup while registering you can do this yourself; otherwise, notify the race director.


Cancellation Policy:  The Thunderbunny Trail Races will take place rain or shine unless conditions become unsafe, ODNR revokes our permit, or there is any other unforeseeable event that warrants unsafe conditions.  The Race Director will have the authority to make changes in order to best meet the group’s interests and the safety of participants, volunteers and spectators in case of extreme weather or other unforeseeable events. The Race Director will determine if and when the event shall be postponed, resumed, or canceled.  The "Refund/Rollover Policy" listed above is implemented in the case of a cancellation.



Directions:  Address for directions to the race start/finish area:

Strouds Run Beach Parking Lot

12981 Strouds Run Rd 

Athens, Ohio 45701