IRONMAN 70.3 Louisville
Louisville, United States · August · IRONMAN
Latest edition: Held 2024 (inaugural, 18 Aug) and 17 Aug 2025; IRONMAN lists a pause because of highway and road construction in Jefferson County, with a possible return in 2027. The enumeration seed said a 2026 edition ran on 16 Aug 2026, but the Earthtrekkers, WDRB and other sources say 2026 is paused; confirm on ironman.com.
Why people love it
- Downriver Ohio River swim finishing at Waterfront Park
- Smooth roads through Oldham County horse farms on the 90 km (56 mi) bike
- Fourth Street Live downtown finish with strong volunteers
- Easy hotels and parking, and a walk to transition
Watch out for
- Race is paused for road construction; confirm a 2027 return
- Heat and humidity: highs of 28-34 °C (82-93 °F), heat index up to 39 °C (102 °F)
- Warm river water of 28-30 °C (82-86 °F), no wetsuits
- Drafting and traffic incidents on the bike in 2024; long transitions
- Hilly run through parks with an exposed start and finish
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 satisfactionLoved3.8
Slowtwitch reviewers in 2024 mostly recommended it and praised the venue, volunteers and finish; heat, hills and swim seeding drew complaints. · Medium confidence
- OrganizationWell run3.8
Production, volunteers, shuttles and cooling buses were praised; the crowded start chute, long T2, drafting and traffic incidents were not. · Medium confidence
- First timer friendlyDoable3.3
Heat, rolling hills, a warm river and an exposed run are demanding for a first half. · Medium confidence
Course traits, not part of the score
- PR potentialAverage3.0
Winners took 3:46:03 and 4:16:26 in 2025 heat on a hilly run; some set personal bests in 2024, but it is hot and hilly. · Medium confidence
- Course easeTough3.0
Heat, hills and hot river water make it moderate-plus. · Medium confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalRarely1.0
Water of 28-30 °C (82-86 °F) is above the 24.5 °C (76.1 °F) limit, so no wetsuits. · High confidence
- Water temperatureExtreme1.3
River water of 30 °C (86 °F) is hot, above the 27 °C (81 °F) mark. · High confidence
- Calm waterSome chop3.0
Wind chop overpowered the current in 2024, while 2025 was calm with a slight current. · Medium confidence
- Swim easeEasy3.5
A straight point-to-point swim downriver, though seeding problems and waves were reported. · Medium confidence
- Swim experienceFine3.3
An Ohio River swim past the city skyline; some recommend it, others found it slow. · Medium confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceGood3.9
Roughly 75-80 percent good surface per an athlete, with one rough descent on Route 393. · Medium confidence
- Road closuresPartly closed3.1
Intersections were policed but traffic was allowed on course, and two athletes were hit by cars in 2024. · Medium confidence
- Bike sceneryBeautiful4.1
Reviewers describe horse farms and countryside. · Medium confidence
- WindMostly calm3.6
No wind complaints on the bike, though river wind affected the swim. · Low confidence
Course traits, not part of the score
- Bike speedAverage3.4
Smooth roads and rolling terrain, but drafting and traffic slowed some riders. · Medium confidence
- Bike flatnessRolling3.3
River Road flats and rolling horse country; elevation gain is not published. · Low confidence
- Bike simplicityMostly simple3.9
Not overly technical, with good downhill opportunities. · Medium confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportStrong4.3
Fans and the Fourth Street Live finish were praised. · Medium confidence
- Aid stationsGood4.4
Volunteers at aid stations were called amazing, and cooling buses helped in the heat. · Medium confidence
- Run sceneryBeautiful3.7
A river and park run with a shaded middle section. · Medium confidence
- Run conditionsHard1.8
A heat index of 39 °C (102 °F) in 2025 and humidity, with the first and last 5 km (3 mi) exposed. · Medium confidence
Course traits, not part of the score
- Run flatnessRolling2.8
Rolling, with hilly miles 5-8 through the parks and a claimed 174 m (570 ft) of gain. · Medium confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperatureHarsh1.6
Mid-August highs of 28-34 °C (82-93 °F) with high humidity. · High confidence
- Weather reliabilityVariable3.0
A Midwestern summer: heat plus a thunderstorm risk; 2024 was cooler than the day before. · Medium confidence
- Venue beautyLovely3.9
Riverfront skyline and parkland. · Medium confidence
- Spectator friendlyEasy3.8
A Fourth Street Live finish and downtown loops, though the bike is one large loop. · Medium confidence
Course traits, not part of the score
- Low altitudeSea level4.7
About 140 m (460 ft) above 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 availabilityGood4.3
Plentiful hotels and parking, per a 2024 racer. · Medium confidence
- Hotel valueNormal3.4
Typical US city pricing; one couple used a downtown hotel. · Medium confidence
- WalkabilityWalkable3.9
One 2025 couple stayed a 5-7 minute walk from transition, but the swim start needs a shuttle. · Medium confidence
- Travel easeEasy4.1
SDF airport and a downtown venue. · Medium confidence
- LogisticsSome complexity3.4
Shuttles to the swim start; long T1 and T2 were criticised. · Medium confidence
- Town and foodGood4.0
Downtown Louisville has a bourbon and food scene. · Medium confidence
Key facts
- Location
- Louisville, Kentucky, United States
- Typical month
- August
- Latest or next date
- 17 August 2025
- Organiser
- IRONMAN
- Field size
- About 1,300 athletes
- First held
- 2024
- Distances
- 1.9 km (1.2 mi) swim, 90 km (56 mi) bike, 21.1 km (13.1 mi) run
- Swim venue
- Ohio River, River Park Place Marina to the Great Lawn, Waterfront Park (river)
- Water temperature
- 28–30 °C (82–86 °F)
- Wetsuit
- Not legal (warm water)
- Swim start
- self-seeded rolling
- Swim laps
- 1
- Bike laps
- 1
- Key climbs
- Oldham County rolling horse country
- Run climbing
- 174 m (570 ft)
- Run shade
- first and last 5 km (3 mi) exposed, middle 10 km (6 mi) shaded
- Air temperature
- 22–33 °C (72–91 °F)
- Humidity
- high, heat index 102 F (39 C) in 2025
- Altitude
- 140 m (460 ft)
- Nearest airport
- Louisville Muhammad Ali International (SDF)
- Where to stay
- Downtown Louisville, NuLu, New Albany, Indiana across the river
- Booking
- Plentiful downtown hotels and parking; one 2025 couple stayed at Hotel Distil 5-7 minutes on foot from transition.
What racers and reviewers say
- Slowtwitch forum: 2024 Louisville 70.3 course/venue reviewRaced 2024 · forum · Positive
Racers rate the inaugural race as well organised with plentiful parking and hotels. The swim wasn't fast: wind chop beat any current. Bike praised for smooth roads, but drafting and cars on course drew complaints; the run was hilly with a poor last mile; volunteers and finish loved.
“fantastic venue, well put together”
- Earthtrekkers (Tyler, 2025)Raced 2025 · blog · Mixed
First-person 2025 report: calm 86 F (30 C) swim with slight current and no wetsuits, lollipop bike with a few steep climbs, and punishing heat on the run. Praised shuttles, volunteers and a standout finish; stayed at Hotel Distil near transition.
- Slowtwitch: Pro photo gallery 'A Scorcher' (2025)Raced 2025 · article · Mixed
Pro race recap in 2025: very hot forecast, 86 F (30 C) water, cooling buses and a hilly hot run. Jason West won in 3:46:03 and Jackie Hering in 4:16:26; IRONMAN credited for heat prep.
- WAVE3/WDRB (2024 coverage)Raced 2024 · article · Positive
Local TV report on the inaugural race: friends and family lined the course, winner Jacob Capin praised the course and the support, and one finisher set a PB crediting the crowd.
“great support, great spectators”
- WDRB (2025 coverage)Raced 2025 · article · Mixed
Athletes said the heat was a challenge and even the river was too warm; the paper also reports the race will pause in 2026 for road projects.
Show 3 more
- RaceRaves race pageRaced 2025 · aggregator · Mixed
Point-to-point downriver swim, single-loop rolling bike through Oldham County, rolling run finishing at Fourth Street Live; air 29 C (85 F), water 27 C (80 F). Notes race is on pause. No athlete ratings.
- Slowtwitch forum: Louisville gears up (2025)Raced 2025 · forum · Mixed
Pre-race preview of the 2025 70.3 with heat forecast and race-weekend plans.
- Louisville Sports Commission pageRaced 2024 · article · Positive
Host-commission description of the race returning in 2024 with a downriver swim, Oldham County bike and downtown finish.
Sources
Pages we used for facts and ratings. See how we rate.
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