Aerial view of the Texas City Dike course

Course Maps

Know your course

See every turn before race day.

Explore the swim, bike and run routes used by the Texas City Triathlon, Duathlon and Aquabike. Open each interactive map to inspect the course, change available route views and understand how every event moves through the venue.

Choose your event

Know which event & routes are yours.

Use this quick guide before opening the maps below.

Individual or relay

Triathlon

One complete swim-bike-run course from Galveston Bay to Rainbow Park.

Swim500 meters
Bike15 miles
Run3.1 miles

Individual or relay

Duathlon

Two different run routes surrounding the same complete bike course.

Run 12 miles
Bike15 miles
Run 23.1 miles

Individual event

Aquabike

The complete swim and bike routes, finishing at the Bike-In timing mat.

Swim500 meters
Bike15 miles

Aerial view of athletes beginning the Texas City swim — Galveston BaySwim Start

Athlete riding the Texas City and Dike bike course — Texas City & DikeBike Course

Aerial view of the run course and finish in Rainbow Park — Rainbow ParkRun & Finish

Interactive map guide

How to use the maps.

Each map works on desktop, tablet and mobile. Follow these steps to find the exact route view you need.

01Open the map

Select “Show Map” inside the frame to enlarge and activate the interactive course.

02Change views

Use the map menu to switch available routes. Choose Satellite or Hybrid for aerial detail.

03Find added routes

The swim map includes Swim Exit to Transition. The run map includes the Duathlon opening run.

04Using a phone?

Open the map first. The course selector becomes available after the interactive map loads.

Interactive course maps

Explore your race. Know the courses.

Review the route now, then follow all race-day markings and official instructions when you compete.

Triathlon & Aquabike

Swim Course

500 Meters

The swim begins with a running beach start. Water is approximately shin- to waist-deep approaching the first buoy, approximately 6–7 feet deep between the course buoys and progressively shallower returning to shore.

Open the map menu to also view the marked route from Swim Exit to Transition.

All three events

Bike Course

15 Miles

Triathlon, Duathlon and Aquabike athletes use the same fast, mostly flat and mostly closed course along the Texas City Dike and nearby roads. Expect expansive water views and the possibility of coastal wind.

Remain alert and follow all course markings and instructions from police, volunteers and race officials.

Triathlon & Duathlon

Run Courses

2 & 3.1 Miles

The fully closed run course features water views, park views and a final mile on a groomed crushed-surface trail. The 3.1-mile route serves the Triathlon and the Duathlon’s second run.

Open the map menu to select the Duathlon’s separate two-mile opening run.

Know the route

Arrive ready to race.

Study your course, understand each transition and save your focus for race morning.