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Chain of Rocks Bridge Duathlon

Sun May 3, 2026
Granite City, IL 62040 US Directions

Course Details

Run 1 Details: Start on the Illinois Entry to the Chain of Rocks Bridge- head West. Out and back to a turn around on the historic Chain of Rocks Bridge.

  • Run to Bike Transition in the Chain of Rocks Bridge Parking Lot: Transition area will have water and first aid support.

Bike Details: 12 miles  – East on Chain of Rocks Road. South on Slough Road/Chouteau Place Road to turn-around.

  • Bike to Run Transition in the Chain of Rocks Bridge Parking Lot: Transition area will have water and first aid support.

Run 2 Details: Start on the Illinois Entry to the Chain of Rocks Bridge- head West. Out and back to the turn around on the historic Chain of Rocks Bridge and back to the Finish Line. High Fives!

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