Rochester Orienteering Club

See you in the woods!

Mendon Trail Run - A Trail Run for Everyone!

Since 1994, The Rochester Orienteering Club has offered The Mendon Trail Run. The Mendon Trail Run raises funds to support the activities of the Club, which is one of the most active Orienteering Clubs in the US (to learn more, or to attend one of our events, see https://roc.us.orienteering.org/).

The trail run features distances of 10K, 20K, 30K and 50K on the east side of beautiful Mendon Ponds Park.

Aid station for 20k, 30k and 50k runners about 3.5 miles into the loop, plus one water stop in the S/F area.

Course Description

10 km loop course entirely on trails or grassy fields. The course will be marked, turns marked at trail junctions, and traffic cones at the road crossing. The course has many rolling hills. Nearly all of the course is runnable (not particularly technical), although there is one fairly short rocky downhill section where the footing can be a little tricky. Estimated 1000 feet of climb per 10k loop. It should be noted that the total elevation difference between low point and high point on the course is only 150 feet; it should also be noted that the course is essentially never flat! There will be two crossings of park roads per loop. Runners are responsible for their own safety when crossing roads.

click here for Course Map

Meet Information Sheet

Event Information

Location: Stewart Lodge, Mendon Ponds Park
Bib number pickup: Friday November 3 from 5:00 to 7:00 PM, at MedVed, 3400 Monroe Ave, Rochester, NY. At race for 50K, from 7:00 to 8:00 AM. For all other distances, from 8:05 to 9:30 AM.
Awards: Overall M & F, plus age group (10 year) winners in each race. Race souvenir to all 50K finishers.

Aid station for 20K, 30K and 50K runners at start/finish, plus one water stop about 3.5 miles into loop.
Pacers will be permitted in the 50K only, and only for the last two loops. There is no charge for pacers, but we require that you fill out a waiver. See the registration table for the waiver. There are several rules for pacers, most of which are common in ultras:

  • Pacers can't carry supplies for the runner (they can't carry the runner's Camelbak if they have one, for example; they can't carry their water bottle, or food for them, etc.)
  • Since we won't be charging for pacers, pacers are not allowed to take supplies for himself/herself at the aid stations.
  • The pacer can't run through the finish line with the runner, either at the end of the race or when finishing a lap.
  • The pacer must arrive at the aid station with the runner or after the runner, and must leave the aid station with the runner or before the runner. So the pacer can't race ahead and be filling the runner's water bottle, rounding up food items, etc., or linger after the runner has left the aid station.

Refunds: Full refund minus 20% administration fee up to October 13. No refunds after that date.

Contact: Race Director

Race Start Times:

8:00 AM for 50K
9:30 AM for 10K, 20K and 30K

 2023 Entry Fees  By Oct 15 Oct 16-Nov 1
(Online Only) 
 Nov. 2 or 3, or 
day of event
 10k  $20  $25  $30
 20k  $25  $30  $35
 30k  $30  $35  $45
 50k  $45  $55  $65

50K cutoff:

The last loop must be started before 3:00 PM and course must be completed by 5:00pm to ensure race is finished by dark. 30K Last loop must be started by 2:00PM

Aid Station Update for 2023

Due to County Park health regulations, in some instances, food may need to be handed to you. There will be one fully stocked aid station mid-loop providing the following:

  • FOOD: small cups of: M&Ms, gummi bears, pretzels, Pringles, dill pickle slices, fig bars
  • ****please point to what you would like and a volunteer will take the cup and drop the contents in your hand (health rules may change without notice on this site)
  • LIQUIDS: water, Gatorade, flat Coke and ginger ale, pickle juice
  • ****please consider bringing a collapsible cup and/or water bottle for liquids.
An aid station with water and Gatorade only will be at the beginning of each loop. Plan to bring any other favorite foods in your drop bag.

To register, click UltraSignup link below:


There is a limit of 350 runners this year. Register early to make sure you don’t miss the cut-off!

Race Sponsors

We are grateful for the Race Support Provided by MEDVED and WEGMANS


Results from 2022 - November 05 - Mendon Trail Run

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