IRONMAN 70.3 Texas
Galveston Island, United States · April · IRONMAN 70.3
Why people love it
- Flat, straight bike and run
- Praised 2026 setup with frequent swim buoys and kayaks
- Warm Gulf water around 22 to 24 °C (72 to 75 °F)
- Finish at Moody Gardens and the Aquarium Pyramid
Watch out for
- Fully exposed bike, often into 24 to 32 km (19.9 mi)/h (15 to 20 mph) wind
- The 2025 swim was cancelled for wind
- Little shade, heat and humidity on the three-loop run
- Moody Gardens hotels sell out; arrive early for parking
- Attendance fell to about 1,400 in 2026 after Dallas was added
Race
How racers feel about it, how well it is run, and how it treats a first timer. Counts for 27% of the overall score.
- Racer satisfactionLiked3.4
A fun, flat first-timer race, but athletes report wind, heat, a shadeless run and a drop to about 1,400 entrants in 2026. · Medium confidence
- OrganizationWell run3.8
The 2026 setup earned praise for buoys, kayaks and cleaner roads, though transition felt short of volunteers. · Medium confidence
- First timer friendlyFriendly3.7
A flat out-and-back course suits first-timers, but wind, heat and a congested three-loop run add difficulty. · Medium confidence
Course traits, not part of the score
- PR potentialFast3.5
A flat course with a 4:35 PB reported, but the exposed bike is often into 24 to 32 km (19.9 mi)/h (15 to 20 mph) wind. · Medium confidence
- Course easeTough3.4
Flat, but wind, humidity and little shade can make it a grind. · Medium confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalUsually3.6
Water of 21 to 24 °C (70 to 75 °F) sits close to the wetsuit limit, though past guides call it wetsuit-legal. · Medium confidence
- Water temperatureComfortable4.2
About 22 to 24 °C (72 to 75 °F), warm but comfortable. · Medium confidence
- Calm waterSome chop2.9
The bayou is sheltered, but wind makes it choppy with a wind-driven current; the 2025 swim was cancelled. · Medium confidence
- Swim easeModerate3.4
Wave and dock starts, glare on the first leg and a wind-driven current. · Low confidence
- Swim experienceFine2.8
Murky saltwater with glare; one 2013 racer called it manageable. · Low confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceGood3.8
Excellent apart from the San Luis Pass toll bridge and the first and last 3 km (2 mi). · Medium confidence
- Road closuresMostly closed3.6
No direct evidence on closures. · Low confidence
- Bike sceneryPleasant2.8
Flat Gulf Coast road with little to see. · Medium confidence
- WindWindy1.8
Athletes repeatedly describe a fully exposed course with strong wind on the Gulf Coast. · High confidence
Course traits, not part of the score
- Bike speedFast3.6
Flat and straight, but fully exposed to 24 to 32 km (19.9 mi)/h (15 to 20 mph) wind and rough pavement near the bridge. · Medium confidence
- Bike flatnessPancake flat4.7
Essentially flat apart from the San Luis Pass bridge; no gain figure is published. · Low confidence
- Bike simplicityMostly simple4.3
A straight out-and-back with the bridge as the only feature. · Medium confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportDecent3.0
Spectator-friendly around Moody Gardens, but little crowd energy on the run. · Medium confidence
- Aid stationsGood3.6
Aid was generally fine, though 2026 transition felt short of volunteers. · Low confidence
- Run sceneryPleasant2.6
Little shade or scenery on the loops. · Medium confidence
- Run conditionsModerate2.6
Little shade, humidity, heat reaching about 29 °C (84 °F) and crowded loops. · High confidence
Course traits, not part of the score
- Run flatnessFlat4.7
Flat three-loop run with many turns. · High confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperatureWarm or cool3.3
Highs of 23 to 28 °C (74 to 82 °F), humid, with cold snaps in some years. · Medium confidence
- Weather reliabilityVariable2.6
The 2025 swim was cancelled for wind, 2018 was unseasonably cold, and thunderstorms are possible. · Medium confidence
- Venue beautyPleasant3.2
Moody Gardens and the aquarium finish, but a plain landscape otherwise. · Low confidence
- Spectator friendlyEasy4.0
Loop run and compact venue let spectators see athletes often. · Medium confidence
Course traits, not part of the score
- Low altitudeSea level5.0
Sea level. · High confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.
- Hotel availabilityBook early2.8
Moody Gardens hotels sell out; seawall and mainland options exist. · Medium confidence
- Hotel valueNormal3.0
No pricing found. · Low confidence
- WalkabilityWalkable3.6
Moody Gardens hotels are close, but mainland options need a drive. · Low confidence
- Travel easeEasy3.5
Houston Hobby is about 80 km (50 mi) away. · Low confidence
- LogisticsSimple3.6
Single venue base, though arriving early for parking is advised. · Medium confidence
- Town and foodGood3.6
Galveston has seafood and seawall dining, but athletes say little. · Low confidence
Key facts
- Location
- Galveston Island, Texas, United States
- Typical month
- April
- Latest or next date
- 4 April 2027
- Organiser
- IRONMAN 70.3
- Field size
- About 1,400 athletes
- Distances
- 1.9 km (1.2 mi) swim, 90 km (56 mi) bike, 21.1 km (13.1 mi) run
- Swim venue
- Offats Bayou, from Moody Gardens Palm Beach (canal)
- Water temperature
- 21–24 °C (70–75 °F)
- Wetsuit
- Legal
- Swim start
- wave / dock starts
- Swim laps
- 1
- Bike laps
- 1
- Key climbs
- San Luis Pass bridge
- Run laps
- 3
- Run shade
- Little
- Air temperature
- 19–28 °C (66–82 °F)
- Humidity
- high
- Altitude
- 2 m (7 ft)
- Nearest airport
- Houston Hobby (HOU), 80 km (50 mi) away
- Where to stay
- Moody Gardens, Galveston seawall, Texas City
- Booking
- Moody Gardens hotels sell out; options on seawall or mainland (Texas City/La Marque).
What racers and reviewers say
- RaceRaves: Florian BasierRaced 2026 · aggregator · Positive
Calls the 2026 edition a professional setup: fewer docks on the swim, frequent buoys and kayaks, cleaner roads with fewer flats and live lap monitoring. Complaints: attendance dropped to about 1,400, transition felt short of volunteers, and the run has little shade or scenery.
- RaceRaves: RGarrett (2021 edition)Raced 2021 · aggregator · Mixed
2021 was very windy: the ride out felt good but the return into the wind toward the run was severe.
- RaceRaves: RGarrett (2017 edition)Raced 2017 · aggregator · Positive
Fun, challenging, spectator-friendly and a great race for first-timers with a flat out-and-back bike; swim can be choppy, bike very windy and run hot.
- Slowtwitch forum: Ironman 70.3 TexasRaced 2011 · forum · Mixed
Compares the 2010 and 2011 races: sheltered bayou swim whose conditions depend on wind, a four-loop run with many turns and heat into the mid-80s F (about 29 C). Well run, with well-spaced waves and little drafting.
“The bike course is completely exposed and offers zero blockage from the wind.”
- Slowtwitch forum: Galveston tips threadRaced 2018 · forum · Mixed
Preparation thread for April 2018: essentially flat course apart from the San Luis Pass bridge, strong variable wind (disc rear advised), excellent roads except near the toll bridge, a congested run with many tight turns and hot humid conditions. Moody Gardens rooms sold out fast; arrive early for parking and traffic.
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- Slowtwitch forum: Galveston 70.3 race reportRaced 2013 · forum · Positive
First-person 2013 race report: 4:35 PB, murky but manageable swim with no waves, 2:25 bike at 23.3 mph (37.5 km/h (23.3 mph)) in near-benign wind, and a PB run. Complains about crowding on the three-loop run and big age-group starts; praises the venue and course.
- Endurance Corner course guideRaced 2017 · article · Mixed
Course guide: bay-side swim usually flat and wetsuit-legal (mid-70s F, about 24 C), flat straight out-and-back bike with rough pavement in the first and last 3 km (2 mi) and often strong wind, and a flat shadeless run with several turnarounds. Warm and humid; thunderstorms possible; fly into Hobby.
- Galveston Daily News: 2025 race coverageRaced 2025 · article · Mixed
Seen via search summary (page rate-limited): strong winds and weather led to cancellation of the 1.2-mile (1.9 km (1.2 mi)) swim in the 2025 edition, with more than 3,000 athletes starting on the bike and finishing the run at Moody Gardens.
- Slowtwitch forum: Moody Gardens hotel sold outRaced 2011 · hotel-review · Mixed
Moody Gardens Hotel and Inn at the Waterpark were sold out with long waiting lists; posters suggest Hampton, Texas City, La Marque or condo rentals, and warn the Hilton stacked bikes in a meeting room (secondhand).
- Galveston Daily News: 2018 cold raceRaced 2018 · article · Mixed
Reports unseasonably cold weather for the April 2018 race; no athlete quotes.
Sources
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