
Trail Mix is a duathlon and road cycling race on October 4, 2026 in Rockford, IL, with entry fees from $50 to $80.
From the Organizer
Trail Mix is two events, an off-road duathlon and a mountain bike race, on the same day! Two distances for each event.
The Trail Mix duathlon is a 2 mile run, 10 mile bike, 2 mile run (individual or team of 2 people, 1 runner and 1 biker)
The Half Mix duathlon is a 2 mile run and 5 mile bike.
The Trail Mix Competitive mountain bike race is 20 miles
The Trail Mix Sport mountain bike race is 10 miles.
Sign up for both a duathlon and a mountain bike race and receive a 25% discount at checkout!
The run loop is at https://www.strava.com/segments/29916486 and goes clockwise. The bike loop is at https://www.strava.com/segments/32772773 and goes counter-clockwise. Both courses and transition will be thoroughly marked.
All of the events are at the Atwood Park Trail System, 7074 Rydberg Rd, Rockford, IL 61109. Both runs and the ride will be on the off-road trails. A mountain bike is strongly recommended. Sign up as an individual or a team consisting of 2 people. Professional chip timing by Tri-3 Sports Timing. Your entry includes a custom Purist water bottle, your choice of meal from Sizz n Fizz food truck, and ice cream from Dairyhäus on site! There's not any packet pickup to worry about ahead of time. Pre-racing meeting for the duathlon will be at 8:45am. You must be checked in before then. The MTB course will be open for pre-riding at 11a with non race course trails open all day. Pre-race meeting at 11:45a. We will cap the total duathlon entries at 90 and the total mountain bike entries at 125. There is not race day sign up.
100% of proceeds for the event will be donated to further trail building and maintenance in the Rockford area.
This event is co-hosted by Rock River Multisport and Rockford Area Mountain Biking Alliance. Artwork donated by Aaron Johnson of Aaron Branding at www.aaronbranding.com.
Events
Weather
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
68°
Typical Low
46°
Chance of Rain
30%
Based on US Climate Normals data from Rockford Gtr Rockford Ap, 2 mi from the venue.
Host City
Population
147,649
as of 2023
City Elevation
760 ft
Nearest Airport
RFD
Chicago Rockford International Airport · 6 mi
Major Hub
ORD
Chicago O'Hare International Airport · 64 mi
Time Zone
Central Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Trail Mix, put it on the calendar, and turn “someday” into a start date.
Enter your email and we'll send more your way.
From Endurance Grid
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Run, bike, run. The multi-sport format without the swim. Two disciplines, one race — a great bridge between running and triathlon.
Built around sustained effort on a bike, exploring cities on the open road. Beginner distances create a great entry point into endurance sports.
Coming Up
Lake Max Triathlon and Duathlon
151 miles away
Wisconsin Women's Triathlon
64 miles away
Waupaca Area Triathlon
150 miles away
Hero Hustle Sprint Triathlon & Duathlon
123 miles away
Plan your trip
Coming from out of town? There's more to Rockford than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to RockfordFrequently Asked Questions (FAQs)
Trail Mix
Oct 4, 2026