Duathlon

Chain of Rocks Bridge Duathlon 2027

Date: Sunday, April 25, 2027
Start time: 9:00 AM start (Chicago)
Location: Granite City, Illinois
Entry fee: From $55 · goes up to $60 on Dec 24, 2026
Included with entry: Includes a shirt

Registration is open.

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Official race website

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Events and entry fees

Event	Distance	When	Entry fee	Cap
Duathlon Relay	DuathlonRun 1.5 mi · Bike 12 mi · Run 1.5 miRelay or team	Apr 25, 20279:00 AM	$75$80 after Dec 24, 2026	–
Individual Duathlon	DuathlonRun 1.5 mi · Bike 12 mi · Run 1.5 mi	Apr 25, 20279:00 AM	$55$60 after Dec 24, 2026	–

Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.

The Duathlon fee goes up to $60 on Dec 24, 2026.

Race day planning

Entry fee schedule

Duathlon Relay: $75 until Dec 24, then $80 until Jan 25, then $85 until Apr 25, then $90 until Apr 25.
Individual Duathlon: $55 until Dec 24, then $60 until Jan 25, then $65 until Apr 25, then $70 until Apr 25.

Online registration closes Apr 25, 2027, unless the race fills first.

Light and altitude

Sunrise on race morning is at about 6:11 AM, and the Duathlon Relay starts at 9:00 AM. The start sits about 420 feet above sea level.

Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.

Start location and course

3318 Chain of Rocks Road, Granite City, IL 62040

Directions to the start

The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.

Where Chain of Rocks Bridge Duathlon ranks

No. 34 of 50 on Cheapest duathlons in the US

National lists computed from results, entry fees, course maps and water temperatures; they refresh through the day.

Typical race-day weather

Around April 25 the day usually runs from 51°F at dawn to 68°F in the afternoon, with measurable rain on about 35% of days. Cold snaps dip to 41°F and hot years reach 81°F.

Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.

From the race's page

What the organizers of Chain of Rocks Bridge Duathlon cover on their registration page, in brief.

Schedule and packet pickup

Packet Pick Up

Saturday, April 24: Big Shark Bicycle Company, 1155 South Big Bend Blvd, 63117, 12pm-5pm.

Course

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…

Full details on the race's RunSignup page

Race details

Where: 3318 Chain of Rocks Road, Granite City, IL 62040Map
Course: Road
Start elevation: About 420 feet
Included with entry: T-Shirt
Distances: Duathlon
Editions: 2027 (Apr 25, 2027), 2026 (May 3, 2026)

Organize this race? Add details or a correction

Quick answers

When is Chain of Rocks Bridge Duathlon?: Sunday, April 25, 2027, starting at 9:00 AM.
How much does it cost?: Entry starts at $55 before processing fees, and rises to $60 on Dec 24, 2026.
When does registration close?: Online registration closes Apr 25, 2027, unless the race fills first.
Do athletes get a shirt or medal?: Entry includes a shirt, according to the race's registration page. Check it for sizes and whether kids' races get the same.
What distances are offered?: Duathlon.
Where does it start?: 3318 Chain of Rocks Road, Granite City, IL 62040.

From the organizers

The Chain of Rocks Bridge has become the permanent home of our Spring Duathlon. Originally held on the historic Eads Bridge we re-located the event to a longer bridge and a more rural bicycle course. Participants will run from Start Line to the Mississippi River and back, followed by a flat, fast out and back bike circuit, returning to a final out and back run leg to the river and back with great views of the mighty Mississippi River. Awesome, right?!