Pere Marquette Endurance Trail Run
- Date
- December 12, 2026
- Distance
- 7.8 Mile Trail Run
From the Organizer
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
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
45°
Typical Low
28°
Chance of Rain
27%
Based on US Climate Normals data from St Charles Co Ap, 5 mi from the venue.
Host City
About Grafton, IL
Elevation
775 ft
Nearest Airport
STL
St. Louis Lambert International Airport · 18 mi
Time Zone
Central Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Pere Marquette Endurance Trail Run, put it on the calendar, and turn “someday” into a start date.
187
Days to train
- Race
- Pere Marquette Endurance Trail Run
- Date
- December 12, 2026
Coming Up
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Half Marathon · 10K · 5K
17 miles away
• June 14 Training Ride •
6 miles away
The "ROCKIN' RIVERFEST" 5k, 10K, HALF MARATHON & Fun Run!
Half Marathon · 10K · 5K
17 miles away
Corps of Discovery Trail Races
17 miles away
From Endurance Grid
About This Sport
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
- What is the Pere Marquette Endurance Trail Run?
- Pere Marquette Endurance Trail Run is a running race held in Grafton, Illinois on December 12, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the Pere Marquette Endurance Trail Run?
- Saturday, December 12, 2026 in Grafton, Illinois at 13112 Visitors Center Lane, Grafton, IL. Check the event page for exact start times and wave schedules.
- How do I register for the Pere Marquette Endurance Trail Run?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
Pere Marquette Endurance Trail Run
Dec 12, 2026