runsignup.com

Pere Marquette Endurance Trail Run

Grafton, Illinois, United States

calendar_today 12 Dec, 2026

directions_run Running

sell $50.00

About the Event

This will be the 37th year of the Pere Marquette Endurance Trail Run. 7.8 miles of hills and incredible scenery through the park in December. Packet pickup and pre-race coffee available in the beautiful lodge with a roaring fire. Post race festivities and awards are also in the lodge.

The race is a go regardless of rain, sleet, snow, ice, mud or muck. It's a trail race not a day at the beach. HOWEVER.... should the Park Service close Pere Marquette State Park due to severe inclement weather or other unforeseen cause, Metro Tri Club will cancel the event and offer no refunds or deferments.

Packet Pickup: Race day starting at 7:30AM in the Pere Marquette State Park Lodge

Race Awards: Male and Female Overall, Male and Female Masters (40+), Top 3 age group in 5-year increments from 14 to the oldest person to finish

Races Offered

7.8 Mile Trail Run

Dec 12, 2026

straighten

Distance — 7.8 Miles

terrain

Type — Running

timer

09:30

sell

$50.00

Weather History

These values represent the 3-year monthly averages for December in Grafton.

thermostat Temperature

-0.7° / 7.5°

wb_sunny Feels like

-5.4° / 3.5°

light_mode Avg sunshine hours

5h 35m

water_drop Avg rainfall

1.9 mm

ac_unit Avg snowfall

0.1 cm

air Avg wind speed

12.8 km/h (Gentle breeze)

opacity Sweat loss rate

Low

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Low (2.0)

humidity_mid Humidity

75.8%

wb_twilight Sunrise

08:12

nightlight Sunset

17:41

About Grafton

Learn more about the host city, Grafton.

Grafton is the oldest city in Jersey County, Illinois, United States. It is located near the confluence of the Illinois and Mississippi Rivers. As of the 2020 census, the city had a total population of 626.