If you're racing IRONMAN 70.3 Florida this December, set aside whatever you think you know about Florida courses. Haines City sits on the Lake Wales Ridge, the long sandy spine of high ground that runs down the middle of the state, and this race goes looking for its hills. The bike opens flat and fast before the rollers stack up in the back half, and the run climbs away from Lake Eva on every loop with very little shade. It's the last 70.3 on the North American calendar, and plenty of athletes treat it like a victory lap. The ones who ride it that way usually pay for it on the run.
Race Overview
IRONMAN 70.3 Florida spent its early years at Walt Disney World before renovations there moved the race to Lake Eva Park in Haines City in 2012. It ran as an April race for most of the next decade, with Bart Aernouts and Emma Pallant-Browne taking the pro titles in 2021. That same year IRONMAN added a December edition, and the race has since settled into its current role as the season finale. The December 2024 race marked the 20th edition and sold out with roughly 1,800 age groupers, a field that swelled when Hurricane Helene cancelled Augusta and a few hundred athletes rerouted to Haines City.
For 2026, the race is set for Sunday, December 13, with transition, the race village, and the finish all at Lake Eva Park, about 30 minutes southwest of Orlando. The city expects more than 2,000 athletes. Past editions have offered age group qualifying slots to the IRONMAN 70.3 World Championship, so check the 2026 athlete guide for the allocation toward Chattanooga in 2027. For a lot of the field, though, this race is about closing out the year with one more good day, and the course makes you earn it.
Course Description
The swim starts on a white sand beach next to Lake Eva Park and follows an M-shaped course around the lake for 1.2 miles. All those turns make it a slower swim than the distance suggests, and the dark, shallow water makes sighting harder than it looks from the beach. Water temperature in mid December typically sits in the upper 60s, comfortably under the wetsuit cutoff, so expect a wetsuit legal swim in most years. Spectators line the beach for the entry and exit, and transition sits right in the park.
The bike is a single 56 mile loop through eastern Polk County on rural and residential roads, past orange groves, lakes, small towns, and golf courses. The front half is the fast part, with long straightaways and good pavement that make it very easy to ride above your number. The back half is where the ridge shows up. Riders describe a noticeable climb around the midpoint just before an aid station, then rolling terrain through the final 10 miles that tests tired legs right when you'd like to start thinking about the run. These rollers are the kind where you keep pedaling on the way down to hold your speed, so there's less free recovery than the profile suggests. Pavement gets rougher in spots in the later miles, and the open groves leave you exposed to wind, with past riders reporting a stiff headwind once the course turns back north toward Haines City. Elevation estimates vary by source, from roughly 800 feet to 1,500 feet, with most landing around 1,200. That's mild for most of the country and a lot for Florida.
The run is two loops on paved trails and roads around Lake Eva. It isn't flat. The hills come early in each loop as the course climbs away from the lake, and one estimate puts total run gain north of 500 feet. Shade is scarce, which matters even in December, and the neighborhoods around the lake help where they can with music and garden hoses spraying the course. You pass the park and the crowds between loops, and the finish chute brings you back into Lake Eva Park.
Forecasted Weather
Mid December in Haines City is about as good as Florida race weather gets, but warm is still on the table. Daytime highs typically land in the mid to upper 70s, with race morning temperatures in the 50s to low 60s. Race day highs over the last five years have ranged from 76 to 84 degrees, and the warm years are the ones people remember, since the run is exposed and lands in the hottest part of the morning. December is usually one of the drier months in central Florida, so rain is less of a concern than sun and wind. Wind is the variable that matters most on the bike, especially on the open stretches through the groves in the back half. Lake temperatures in the upper 60s point to a wetsuit swim, but confirm the final call on race morning.
Why This Course Rewards a Best Bike Split Plan
IRONMAN 70.3 Florida punishes the same mistake most rolling courses do, just with a Florida twist: the easy miles come first and the hard ones come last. A BBS race plan for IRONMAN 70.3 Florida 2026 will:
- Put a ceiling on the fast front half. Long, flat straightaways on fresh legs are where riders bank speed they can't afford. A target set before race day keeps you from spending the watts you'll need when the ridge starts.
- Give the back half rollers their own numbers. The climb near the midpoint and the rolling final 10 miles invite a surge on every rise. Segment level targets keep those efforts repeatable so the last hour of the bike doesn't become the first hour of a bad run.
- Pace the wind with power, not speed. The open groves leave you exposed, and a headwind on the return leg can make your speed drop while your effort climbs. A plan built on your actual CdA and the forecast wind tells you where extra watts buy real time and where they don't.
- Protect your legs for the run hills. Two loops with climbing early in each one and very little shade will expose any overcooked bike split. A plan built for the full 70.3, not the bike leg alone, leaves enough in reserve to run the hills instead of walking them.
Interactive Race Plan and Course Map
This power plan was modeled for an athlete with an average CdA of 0.2615, an FTP of 250 watts and weighing 165 lbs. Want to see what your time would be on the 2026 IRONMAN 70.3 Florida course? Try the Time Analysis feature below, where you can quickly adjust Drag, Power, Weight and Crr to your own values. Check out our demo race plan to see what a premium race plan looks like.
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| Interval | Int. Time | Total Time | Int. Dist. | Total Dist. | Grade | Speed | Power |
|---|---|---|---|---|---|---|---|
| #1 | 00:13:57 | 00:13:57 | 5.29 mi | 5.29 mi | -0.17 % | 22.75 mph | 194 w |
| #2 | 00:37:51 | 00:51:48 | 14.16 mi | 19.45 mi | +0.05 % | 22.45 mph | 203 w |
| #3 | 00:00:11 | 00:52:00 | 0.06 mi | 19.51 mi | +6.59 % | 17.11 mph | 294 w |
| #4 | 00:00:43 | 00:52:43 | 0.24 mi | 19.75 mi | -1.17 % | 20.09 mph | 166 w |
| #5 | 00:00:07 | 00:52:51 | 0.04 mi | 19.79 mi | -5.54 % | 20.65 mph | 1 w |
| #6 | 00:10:21 | 01:03:12 | 3.90 mi | 23.69 mi | +0.26 % | 22.61 mph | 206 w |
| #7 | 00:09:41 | 01:12:53 | 3.77 mi | 27.46 mi | -0.11 % | 23.38 mph | 195 w |
| #8 | 00:02:57 | 01:15:50 | 0.78 mi | 28.24 mi | +3.47 % | 15.94 mph | 268 w |
| #9 | 00:02:01 | 01:17:52 | 0.85 mi | 29.09 mi | -1.39 % | 25.23 mph | 154 w |
| #10 | 00:00:32 | 01:18:24 | 0.24 mi | 29.33 mi | -3.76 % | 26.78 mph | 0 w |
| #11 | 00:09:03 | 01:27:28 | 3.34 mi | 32.67 mi | +0.05 % | 22.12 mph | 202 w |
| #12 | 00:10:04 | 01:37:32 | 3.50 mi | 36.17 mi | +0.71 % | 20.85 mph | 216 w |
| #13 | 00:05:31 | 01:43:03 | 2.15 mi | 38.32 mi | -0.49 % | 23.38 mph | 183 w |
| #14 | 00:00:34 | 01:43:38 | 0.23 mi | 38.55 mi | -2.88 % | 23.85 mph | 98 w |
| #15 | 00:00:07 | 01:43:45 | 0.06 mi | 38.61 mi | -1.00 % | 26.34 mph | 176 w |
| #16 | 00:02:38 | 01:46:24 | 0.78 mi | 39.39 mi | +2.31 % | 17.83 mph | 254 w |
| #17 | 00:03:38 | 01:50:02 | 1.39 mi | 40.78 mi | -0.66 % | 22.89 mph | 181 w |
| #18 | 00:38:51 | 02:28:54 | 14.52 mi | 55.30 mi | +0.06 % | 22.41 mph | 203 w |
| #19 | 00:01:08 | 02:30:02 | 0.49 mi | 55.79 mi | -2.23 % | 25.96 mph | 122 w |
| #20 | 00:00:31 | 02:30:34 | 0.20 mi | 55.99 mi | +1.06 % | 23.58 mph | 230 w |
| Totals/Avg | 02:30:34 | 02:30:34 | 56.01 mi | 56.01 mi | -0.24% | 22.32 mph | 200.93 w |
Climb Summary by Category
| Category | Climb Count | Total Time | Total Dist. | Avg. Time | Avg. Dist. | Avg. Grade | Avg. Speed | Avg. Power |
|---|---|---|---|---|---|---|---|---|
| Cat4 | 1 | 00:02:57 | 0.78 mi | 00:02:57 | 0.78 mi | 3.33 % | 15.94 mph | 269 w |
| All Cats | 1 | 00:02:57 | 0.78 mi | 00:02:57 | 0.78 mi | 3.33 % | 15.94 mph | 269 w |
| Climb | Start Time | Start Dist. | Duration | Distance | Speed | Power | Grade | Elevation Gain | Category |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 01:12:53 | 27.47 mi | 00:02:57 | 0.78 mi | 15.94 mph | 269 w | 3.33 % | 138 ft | Cat4 |
Build your own personalized 2026 IRONMAN 70.3 Florida power plan today! Sign up for a free Athlete Basic account to get started with your athlete profile and bike setup, then grab the 2026 IRONMAN 70.3 Florida course to model your own race plan.
2026 IRONMAN 70.3 Florida FAQs
Your target power depends on your FTP, body weight, bike setup, and finish time goal — not a generic number that applies to every rider. The variables that matter most are your current fitness, your aerodynamic position, and the specific demands of the 2026 IRONMAN 70.3 Florida course. The best approach is to build a personalized plan in Best Bike Split using your actual athlete profile — you'll get a segment-by-segment power target based on your specific inputs rather than a one-size-fits-all recommendation.
Every course is different and requires its own unique pacing plan. On a multi-loop course, fatigue and wind shift between laps and what felt comfortable early can become unsustainable later. On an out-and-back, headwind in one direction becomes tailwind in the other — an asymmetry a flat power target can't account for. On a point-to-point or single-loop course, you only get one pass at every section with no opportunity to recalibrate. When you create a Best Bike Split race plan for 2026 IRONMAN 70.3 Florida, we model the specific demands of that course so your pacing strategy reflects the race you're actually doing.
Significantly — and the effect varies depending on the course profile. On flatter courses, wind and aerodynamics become the dominant variables in your speed equation, more so than on courses where gradient naturally dictates effort. On climbing-heavy courses, your power-to-weight ratio and how you manage the descents matter most. A Best Bike Split race plan lets you model the specific conditions forecasted for 2026 IRONMAN 70.3 Florida, so your targets reflect what you'll actually face on race day rather than what the course looks like on paper.
It depends on the course and how well you pace it. Flat, fast courses offer genuine PR potential but only if you execute correctly — without terrain to naturally regulate your effort, going out too hard early is easy and costly. Technical or hilly courses reward smart segment-by-segment pacing over raw fitness. Either way, a physics-based race plan from Best Bike Split gives you a realistic split prediction based on your actual profile so you know before race day what a well-executed bike leg looks like for you specifically.
Yes — and this is one of the most underused features. Once you've built your 2026 IRONMAN 70.3 Florida race plan, you can export it directly to Zwift, TrainerRoad, or any ERG-mode trainer for indoor sessions, or push it to your Garmin, Wahoo, or Karoo for outdoor rides. Training on your actual race plan means you arrive at 2026 IRONMAN 70.3 Florida already knowing what your target effort feels like at every section of the course — not just what the number says on paper.
