Black Diamond Express Half Marathon & 5K

About the Event

Black Diamond Express Half Marathon & 5K — To benefit the Mendon Foundation - Mendon, New York's local land trust and developer/maintainer of the Lehigh Valley Trail in partnership with the Monroe County Parks Department.

(Including virtual option, with option to complete race within one week after race day.)

Sunday, August 23, 2026 • Lehigh Valley Trail, Rt. 251, Mendon, NY

Half Marathon Starts: 8:00am
5K Starts: 8:20am

Course: Flat, scenic out & back course along the historic Lehigh Valley Trail

Additional sections of the Lehigh Valley Trail have been resurfaced!

Start & end location: Mendon Youth Baseball Fields (https://goo.gl/maps/8ZoNAryJ95q)

Half Marathon course is USATF Certified - NY17052JG

Includes

Long sleeved (unisex) t-shirt OR mug guaranteed to the first 150 (combined) by Sunday, August 2nd. (Once sizes are gone after August 2nd we are out of shirts!)
Refreshments and healthy snacks.
Collectible ceramic medals for Half Marathon finishers, collectible ceramic lapel pins for 5K finishers.
Once again, we are offering Virtual Half Marathon and 5K events! Run the distance within a week after the live race date, and we will mail your selected t-shirt or mug, and a medal (HM) or lapel pin (5K). You can download the race certificate post race and enter your time on the website.

Awards

Half Marathon: Top 5 (non virtual) Male & Female Cash or Gift awards; plus collectible Race Water Bottles for top 3 in age groups 12 and under, 13-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70+
All Half Marathon finishers will receive our beautiful, collectible ceramic finisher’s medal!
5K: Top 5 (non virtual) Male & Female Cash or Gift awards; plus collectible Race Water Bottles for top 3 in age groups 12 and under, 13-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70+
All 5K finishers will receive our beautiful, collectible ceramic lapel pin!

Official Site & Frequently Asked Questions

Please visit: https://mendonfoundation.org/black-diamond-express-races/ for more detailed information and answers to your Frequently Asked Questions.

Races Offered

Half Marathon

Aug 23, 2026

straighten

Distance — 13.11 Miles

terrain

Type — Running

timer

08:00

sell

$55.00

Virtual 5K

Aug 23, 2026

straighten

Distance — 3.107 Miles

terrain

Type — Running

timer

08:00

sell

$30.00

Virtual Half Marathon

Aug 23, 2026

straighten

Distance — 13.11 Miles

terrain

Type — Running

timer

08:00

sell

$55.00

5K

Aug 23, 2026

straighten

Distance — 3.107 Miles

terrain

Type — Running

timer

08:20

sell

$30.00

Weather History

These values represent the 3-year monthly averages for August in Mendon.

thermostat Temperature

16.0° / 25.4°

wb_sunny Feels like

15.3° / 25.2°

light_mode Avg sunshine hours

10h 50m

water_drop Avg rainfall

3.5 mm

ac_unit Avg snowfall

—

air Avg wind speed

10.0 km/h (Light breeze)

opacity Sweat loss rate

High

terrain Course conditions

Hard and dry surface

sunny Max UV Index

High (7.0)

humidity_mid Humidity

74.1%

wb_twilight Sunrise

06:17

nightlight Sunset

20:09

About Mendon

Learn more about the host city, Mendon.

Mendon is a town in Monroe County, New York, United States. It has been ranked as the most affluent suburb of the city of Rochester. As of the 2020 census, the population was 9,095. The town is on the southern border of the county.

Hotels & Places to Stay

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About the Event