
The Inkwell Clayton Kids Triathlon is a triathlon race on August 16, 2026 in Saint Louis, MO, with an entry fee of $45.
From the Organizer
The City of Clayton, Inkwell, The Center of Clayton and Big Shark Bicycle Company are proud to announce the 11th Annual Inkwell Clayton Kids Triathlon. This year's event will take place at Clayton Shaw Park Outdoor Pool, Shaw Park and the new GRG Centennial Greenway. This fun and twisty course will introduce kids ages 7- 14 to the sport of triathlon. New for this year- following the completion of the younger age groups we will be holding a free Fun Run on the @1 mile run course.
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
89°
Typical Low
70°
Based on US Climate Normals data from St Louis Sci Ctr, 4 mi from the venue.
Host City
Population
293,109
as of 2023
City Elevation
471 ft
Nearest Airport
STL
St. Louis Lambert International Airport · 9 mi
Time Zone
Central Time
From Endurance Grid
A big city race. Expect multiple lodging options and plenty to do the day before.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at The Inkwell Clayton Kids Triathlon, put it on the calendar, and turn “someday” into a start date.
24
Days to train
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From Endurance Grid
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Three sports, one race — swim, bike, run in sequence, with transitions that are a discipline of their own.
Open water, open roads, and competition with yourself. Cross the finish line knowing what it took to get there.
Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think. Three sports in one race means three movements to train and race day never gets monotonous.
Coming Up
Lake Springfield Triathlon
86 miles away
Tour de Kirkwood Triathlon
6 miles away
White Squirrel Kids Triathlon
122 miles away
White Squirrel Triathlon
122 miles away
Plan your trip
Coming from out of town? There's more to Saint Louis 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.
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The Inkwell Clayton Kids Triathlon
Aug 16, 2026