2015 The Chain of Rocks Bridge Duathlon 4/26/15

Sunday, April 26th

About: Entering its fourth year, the Eads Bridge Duathlon is MOVING to the Chain of Rocks Bridge. Due to the construction on the Arch Grounds and in Laclede's Landing we are headed to a longer bridge and a more rural bicycle course.  The new course will provide the perfect venue to ease into an active event season. Set on the iconic Chain of Rocks Bridge, the race starts and finishes on Chouteau Island. Participants will run from Illinois to Missouri and back, followed by a flat, fast out and back bike circuit, returning to a final out and back run leg across the bridge with great views of the mighty Mississippi.

Race Information: Download our Athlete Guide  for the nitty gritty details.


  • Pre-event Online. Deadline for a GuaranTEEd Shirt is April 18th.
  • At Big Shark WEST 12pm - 7pm Friday, April 24th
  • At Big Shark LOOP 10am-6pm Saturday, April 25th
  • RACE DAY at the Chain of Rocks Bridge Parking Lot on the Illinois side of the Bridge. From 7:00am until 8:30am.

RACE DAY- arrive EARLY- we start and park at the Eastern/Illinois entry to the Chain of Rocks Bridge! RACE will go on rain or shine. We've cast our vote for shine.

Distances: 1.5 mile run – 12 mile bike – 1.5 mile run. A great distance for the beginner, first time multisport athlete or seasoned veteran.

The Venue: The Chain of Rocks Bridge – and rural roads on the Illinois side of the Mississippi River.

Race Date: Sunday April 26th at 9:00 AM

Chain of Rocks Bridge Duathlon Registration Details-

Before January 1st, 2015 Individual $55/Team $75
January 1st through March 1st Individual $60/Team $80
March 1st through April 26th Individual $65/Team $85
Race Day April 26th Individual $70/Team $90


Athletes registered after April 18th, 2015 are not guaranteed an Event Shirt

Team Entry: You can have two person teams- with one person doing the run legs and the other doing the bike segment OR a three person team in which one person does the first run leg, a second person completes the bike leg and the third person completes the final run.

ALL participants wear a timing strap on their non-drive side ankle facing outward. Teams will pass the strap from one to another to time each leg of the race. All straps must be returned or participants will be charged $100 fee.

Packet Pick-Up: 

  • Friday, April 24th, Big Shark Bicycle Company WEST, 17233 Chesterfield Airport Road, 63005- from 12pm until 7pm.
  • Saturday, April 25th, Big Shark Bicycle Company LOOP, 6133 Delmar Blvd, 63112. 10am to 6pm
  • Sunday Morning, April 26th; 7:00am to 8:30am 

Chain of Rocks Bridge Training Group- Interested in doing a Duathlon? Want to join an awesome group with awesome benefits to prepare? Check out the Big Shark/Nutriformance Duathlon Bridge Training Group. Details TBD

2015 Registration is Open:



Run 1 Details: 1.5 miles – Start on the Illinois Entry to the Chain of Rocks Bridge- head West. Before getting to Missouri, turnaround and Head East on the Bridge. 

Run to Bike Transition in the Chain of Rocks Bridge Parking! 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 Parking Lot at the East Entry/Chain of Rocks Road! Transition area will have water and first aid support.

Run 2 Details: 1.5 miles – Start on the Illinois Entry to the Chain of Rocks Bridge- head West. Before getting to Missouri, turnaround and Head East on the Bridge. High Fives!

Awards: Top 3 Overall Men and Women.

  • Top 3 Age Groups Men/Women: U19, 20-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-65, 65-69, 70+
  • Team: Top Men, Women and CoEd Teams

Celebrate!Take in the spectacular view of the Mighty Mississippi River from the Chain of Rocks Bridge deck. Awards will be at (approx.) Eleven AM in the parking lot at the foot of the Bridge on the Illinois side.

Complimentary Therapy: We are proud to have the Precision Health Group on site helping out our athletes. The Precision Health Group thinks differently and treats differently and is indeed a different kind of results-based chiropractic organization.

Race Results:

Questions, Comments, Compliments or to volunteer –

Learn more about the Chain of Rocks Bridge: 

 Thanks to R & R Sanitation for supplying our "facilities".



Course Map

Run Course

Bike Course