70.3 · 17 October 2027 · Istria
Ironman 70.3 Poreč 2027
IRONMAN 70.3 Poreč takes place on 17 October 2027 at Plava Laguna, in Istria. Compact format: everything, accommodation included, within a roughly 500 m radius. Swim in a sheltered bay, bike on fully closed roads through vineyards and olive groves, rolling run along the coast into the center of Poreč. Mild mid-October climate (average highs 21°C), cold water (18°C official average). The wind and speed ratings are rough judgments: hard facts on wind are scarce. The times in the splits are estimates, not official data.
Course
Three legs, three different races
Indicative profile · Scheda automatica da fonti pubbliche (2026-11): da rivedere. The organiser publishes the final course in spring: this page updates.
Swim1.9 km
- 1,892 m clockwise, point-to-point in the sheltered bay of Plava Laguna; start in front of Hotel Parentium, near the Villa Romana restaurant.
- Water at an official average of 18°C: athletes in race reports wore wetsuits; the wetsuit rule isn't spelled out on the official page.
- Calm sea and very clear water according to reports; one lap with 3-4 gentle right-hand turns.
- Tip from athlete reports: start on the outside to avoid the scrum and the breaststrokers.
Bike90 km · 680 m D+
- 90 km out-and-back on fully closed roads, including a stretch of highway; 3 aid stations.
- Rolling course through vineyards and olive groves, no major climbs; official elevation gain 680 m (page summary: 750 m; athlete reports: over 650 m).
- Road surface flagged as poor around Funtana (potholes and bumps), good on the highway section.
- An older profile shows a max gradient around 5.2% and long false-flat stretches: steady pacing, no hard surges.
- Athletes well spread out on the course according to reports: in-race traffic is manageable.
Run21.1 km
- Course along the coast into the center of Poreč and back toward the Zelena resort and Funtana; finish at the Zelena resort.
- Rolling along the Adriatic: official elevation gain 130 m (summary: 100 m); one report flags a steep ~300 m kicker halfway toward Poreč.
- The official page shows a single lap; a 2026 report describes two laps of ~9.5 km plus a final stretch: check the updated version.
- Mostly on the coastal bike path; it can get hot as the hours pass: pour water over yourself at aid stations.
Which athlete it takes
| Goal | Swim | Bike | Run | Total |
|---|---|---|---|---|
| Relaxed finisher | 0:45 | 3:15 | 2:20 | 6:30 |
| Mid-pack goal | 0:38 | 2:50 | 1:58 | 5:35 |
| Fast goal | 0:33 | 2:35 | 1:42 | 5:00 |
| Top age-group | 0:29 | 2:20 | 1:28 | 4:25 |
Indicative splits from recent editions' results, transitions included. The personal forecast, below, compares them with your data.
What the course asks
Stories from the race
The best of the race
A selection of the most watched videos and the most popular photos. The full galleries are at the bottom of the page.
Reviews
Who raced it, what they say
At launch, pages start from syntheses of public race reports, declared as such. Verified reviews come from athletes who receive the invite within 7 days of the race, with the activity recorded on their device.
Structured fields: finish and leg times from your device, wetsuit yes/no, gear, perceived temperature, what you'd do again and what not, «I'd race it again». Free text is the race report. The linked activity makes it verified without exposing personal data.
The form appears here after the race, for those who connected a device or appear in the official results.
Are wetsuits allowed? The rule isn't spelled out on the pages consulted, but with an official average water temperature of 18°C, athletes in reports wore them. Check the wetsuit rule on the official site before the race. How hard is the bike leg? Rolling, with no real climbs: 680 m of gain per the official figure, with sources ranging from 650 to 750 m and an older profile around 1,000 m. Max gradient reported around 5.2%. Are the roads closed to traffic? Yes, the bike course is on fully closed roads, including a stretch of highway. Is the run flat? No: rolling along the coast, 100-130 m of climbing, with a steep kicker of about 300 meters reported halfway toward Poreč. Is the run one lap or two? Sources differ: the official page shows a single lap, while a 2026 report describes two laps of about 9.5 km plus a final stretch. Check the updated map on the official site. What weather to expect in mid-October? Mild: average highs of 21°C, lows of 11°C. Reports describe sunny days; on the run it can get hot as the hours pass. How many aid stations are there? Three on the bike course according to the official page. The number of run aid stations isn't listed in the sources consulted: check the athlete guide. What are the cutoff times? Not listed on the pages consulted: verify them in the official athlete guide before planning your pacing. Where should I stay? The format is compact: race and accommodation within about 500 meters. In reports, athletes chose Hotel Parentium, near the swim start, or apartments in the center of Poreč.
The Q&A is fed by reviews and the rulebook: every answer says where it comes from.
Preparation tips
What to do from today to race day
Athlete reports mention chaos and breaststrokers in the scrum: position yourself wide and find clear water right away.
Potholes and cracks reported: memorize the section on your recon ride and make sure bottles and gels are well secured.
The course heats up as the hours pass: pour water over yourself at every aid station, as reports suggest.
Bike sources range from 650 to 1,000 m: calibrate your pacing on the actual course during recon, not just the GPS file.
With 18°C water the wetsuit is almost a certainty: arrive with specific wetsuit sessions already done.
Everything within 500 meters
Compact layout: race and accommodation within a roughly 500 m radius according to the official page.
T1 at the Byblos parking lot
From the swim exit you run straight into transition, change in the designated area, and take your bike to the mount line.
Where to stay
Athletes in reports stayed at Hotel Parentium (near the swim start) or in apartments in Poreč.
Official info
The official site has dedicated subpages for accommodation, getting there, race week, and the schedule: check them before booking.
Guides and deep dives
Everything you need before you register
One article per topic, written from the sources listed at the bottom of the page and updated every edition. AI syntheses are declared as such.
Race Day in Poreč: Timeline, Common Mistakes and Plan Bs
From 18°C water to a rolling half: how to get to the start line with your decisions already made, and what to do when things don't go to plan.
Logistics · 3 min · AI synthesisLogistics in Poreč: a race that fits inside 500 meters
Swim start, transition, finish and accommodation all packed into Plava Laguna: how to sort travel, hotels and recon without surprises.
Run · 3 min · AI synthesisThe Run in Poreč: Rolling Along the Coast, With a Climb That Bites
21.1 km along the Adriatic between resorts and the town centre: it's not flat, sources disagree on the number of laps, and the heat builds as the hours pass.
Bike · 3 min · AI synthesisThe Bike at Poreč: 90 km of Rollers, Steady Watts, and Watch Out for Funtana
Out-and-back on closed roads through vineyards and olive groves: fast on paper, but the elevation gain is uncertain and the tarmac is rough in one key section.
Gear
What age groupers ride and what this course asks for
At Kona, age group average
Latest Kona bike count (2026): about ≈2,260 age-group bikes, pros excluded. Shares of bikes counted.
World Championship athletes are qualified and more performance-oriented than the average field here. Source: Slowtwitch, compiled with volunteers and IRONMAN access. Slowtwitch
Wheels for this course
A rule of thumb from this course: 7.6 m of climbing per km and low wind exposure. It is guidance, not a count. (rolling)
Front wheel
50-65 mm deep
Rear wheel
Disc, or a deep wheel (60-80 mm) if you prefer
Tyres
28-30 mm, tubeless if possible. Choose pressure by weight and road surface, not by habit.
Check the weather and the wind forecast on race week: on windy days, drop a depth step on the front wheel.
Race kit
Fuel and pack, nothing forgotten
Work out carbs, fluid and sodium for this course, split into bottles, gels and bars, then tick off everything to pack from passport to Vaseline.
Start at 60 g/h if you have not trained your gut, 80-90 if you have. Never try new products on race day.
Before the race
Carb load
560-700 g carbs per day for the last 1 day(s)
Breakfast, 3 h before
70-140 g carbs, low fibre, familiar food
On the bike 2:50
Every 20 min · 23 g carbs and about 200 ml
On the run 1:58
Every 20 min · 17 g carbs and about 167 ml
Whole race
After the finish
70-84 g carbs and about 21 g protein within the first hour
General guidance for healthy adults, not medical advice. Adjust with your coach or dietitian and rehearse it in long sessions.
Sources
Where what you read comes from
Race reports, blogs, videos and threads that tell Poreč. Linked, never copied: they feed the syntheses, the FAQ and the Q&A.
Your plan for Ironman 70.3 Poreč
Connect what you have, the course does the rest
First today's form and the forecast for the three legs, then a preview of the week built on the Poreč segments and your routes. The account comes after, if it convinces you. Until 31 December 2026 everything is free: we're in alpha.