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Galveston Bay with sailboats in the distance and the Pleasure Pier.
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IRONMAN 70.3 Texas.
Your best day in Galveston.

The Texas 70.3 starts in saltwater near Galveston, then leads you across Gulf Coast roads that can flatter the speed on your watch. Flat roads don't do the running for you. The final kilometres near Moody Gardens are where a well-controlled bike finally counts.

Galveston, the bay and the Pleasure Pier.

Race day
4 Apr 2027
Course
Swim 1.9 km · Bike 90 km · Run 21.1 km
Historical air
17–24°C

What could you race?

I’m Tom, the coach behind Sense Endurance Coaching. Tell me where you are now and I’ll show you what a strong day in Galveston could look like.

Let’s build your race

Let’s build your race.

Your age and race category help me estimate where that performance could place you. They don’t determine how fast I think you can race.

Change units

Offats Bayou is the opening. The run deserves the best of your day.

Offats Bayou gives Galveston a salty opening, followed by flat coastal roads and a run back towards Moody Gardens. On the earlier course, the temptation was to ride to a speed number. Let the wind change that number while you keep the work sensible. The detailed April 2027 turns still need confirmation.

Offats Bayou, prior saltwater start

Set an even stroke without treating the bayou as a pool

Use the calm water to establish a sustainable effort early.

Seed honestly. Settle into rhythm.

Galveston Gulf Coast roads, prior bike

Hold measured power even when the island feels fast

Keep your planned effort on the flat coastal roads. Let speed be an outcome, not the target.

Hold planned watts. Fuel consistently.

Moody Gardens area, previous run finish

Make the first half marathon kilometres controlled

Start with control and progress only when your bike pacing has left you the room to do so.

Easy first aid station. Stay tall.

What to check in race week

Confirm the April 2027 date and download the current Offats Bayou swim, coastal bike and Moody Gardens run maps. The detailed road description in circulation belongs to March 2026. Check closures, wind direction, transitions and aid before turning the predicted split into a lap plan.

Forecast statusToo early for a forecast

A race-day forecast is not meaningful yet; check back closer to the event.

Temperature
16.9–24.4°CDew point centred on 17.9°C
Wind and gusts
23.6 km/hGusts up to 51.8 km/hPrevailing direction SE
Rain likelihood
Up to 85%Wet-surface uncertainty retained

Historical baseline, 2019–2025 · Open-Meteo historical archive · Updated 2026-09-14.Historical comparison only. This is not a forecast for 2027.

Make your finish prediction and I can send this plan to you in race week.

Build the legs.
Practise the decisions.

A finish range gives you something to work towards. The preparation is specific to this race: saltwater composure and disciplined flat-road watts create a run that remains sustainable when the island atmosphere is at its loudest.

I’m Tom. With Sense Endurance Coaching, I’ll build that preparation around your life, follow how you respond and adjust the work as you get closer to Galveston.

Explore coaching
Trisutto certified80/20 Endurance certifiedBrett Sutton’s Coach the Coach programme

Training on your own? See half distance plans

Course sourceOfficial course

PhotographyU.S. Army Corps of Engineers from USACC BY 2.0 · resized, cropped and monochrome