The Race Radar

Trail Mix Off-Road Duathlon and Mountain Bike Race

Rockford, Illinois
Sunday, October 5, 2025
14 Miles

Organizer's Description

This year we are hosting 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 finisher medal, custom Purist water bottles, your choice of meal from Javis Tacos 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 75 and the total mountain bike entries at 75.

100% of proceeds for the duathlon will be donated to trail building at Atwood Park.

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.

Race Events

Trail Mix Off-road Duathlon - Individual Entry

Distance: 14 Miles
Start Time: 9:00:00 AM

Volunteer Entry (Help set up the course Saturday 10/4 or course marshal Sunday during the event you're not doing & you will be comped a free entry for any event of your choosing)

Start Time: 9:00:00 AM

Trail Mix Off-road Duathlon - Team Relay Entry

Distance: 14 Miles
Start Time: 9:00:00 AM

Half Mix Off-road Duathlon - Individual Entry

Distance: 7 Miles
Start Time: 9:00:00 AM

Trail Mix Mountain Bike Race - Sport (10 Mile)

Distance: 10 Miles
Start Time: 12:00:00 PM

Trail Mix Mountain Bike Race - Competitive (20 Mile)

Distance: 20 Miles
Start Time: 12:00:00 PM

Race Information

Trail Mix Off-Road Duathlon and Mountain Bike Race logo

Date

Sunday, October 5, 2025

End Date

October 5, 2025

Location

Rockford, Illinois

7074 Rydberg Rd

61109

Location Map

📍 Trail Mix Off-Road Duathlon and Mountain Bike Race - Rockford, Illinois

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