IRONMAN 70.3 Belgrade
Belgrade, Serbia · September · IRONMAN
Why people love it
- Flat, fast 90 km (56 mi) bike on closed highway and city roads
- Calm Sava Lake swim at 20-23 °C (68-73 °F)
- Compact Ada Ciganlija venue, a lake park inside the capital
- Cheap, easy city break with a major airport
Watch out for
- Few athlete reports exist; the race was first held in 2024
- September heat can reach 33 °C (91 °F) with limited run shade
- Ada Ciganlija vehicle access is closed 05:00 to 16:00 on race day
- Elevation totals are unpublished and the bike course has changed between editions
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
Only previews, press notices and organiser copy exist. No athlete has written up the race. · Low confidence
- OrganizationWell run3.5
IRONMAN-run with city backing and a published traffic plan, but no athlete feedback was found. · Low confidence
- First timer friendlyFriendly3.7
Flat 90 km (56 mi) bike, calm lake and a fast run suit a first half. No technical sections reported. · Low confidence
Course traits, not part of the score
- PR potentialFast3.9
Billed as one of the fastest 2024 courses with a flat bike and run. September heat up to 33 °C (91 °F) can bite. · Low confidence
- Course easeModerate4.1
Flat bike and run in mild lake water. September heat is the main variable. · Low confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalCoin flip3.2
Water is reported at 20-23 °C (68-73 °F), near the limit. The wetsuit rule was not confirmed. · Low confidence
- Water temperatureComfortable4.2
Water of 20-23 °C (68-73 °F) is in or close to the comfortable range. · Medium confidence
- Calm waterMostly calm4.2
Sava Lake is an enclosed artificial lake described as calm. · Medium confidence
- Swim easeEasy3.9
Single lake with simple navigation expected. Start format and laps are unconfirmed. · Low confidence
- Swim experienceGreat3.8
Described as clear water beside a city beach resort. No athlete accounts. · Low confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceGood3.5
City streets and motorway. Surface quality was not reported. · Low confidence
- Road closuresMostly closed4.3
The city traffic notice closes Ada Bridge, the ring road and sections of the A2 motorway. · Medium confidence
- Bike sceneryPleasant3.0
Urban and motorway riding with Belgrade Fair and Ada Bridge views. · Low confidence
- WindSome wind3.3
Exposed motorway at a river confluence. No wind data was found. · Low confidence
Course traits, not part of the score
- Bike speedFast3.9
The race director calls the 90 km (56 mi) course flat and fast. Elevation is unpublished. · Low confidence
- Bike flatnessMostly flat4.2
Described as flat, but no elevation total is published and the course has changed between editions. · Low confidence
- Bike simplicityMostly simple3.9
Straight city streets and highway with some bridge and urban turns. · Low confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportDecent3.2
Run through central Belgrade by the lake and river. A young race with modest crowds expected. · Low confidence
- Aid stationsStandard3.4
Standard IRONMAN aid assumed. One source lists aid only at the start, midpoint and finish of the run. · Low confidence
- Run sceneryBeautiful3.7
Lakeside and riverside route with tree shade. · Low confidence
- Run conditionsEasy3.6
Flat and partly shaded, but September highs can reach 30-33 °C (86-91 °F). · Low confidence
Course traits, not part of the score
- Run flatnessMostly flat4.3
Described as flat along Ada Lake and the river. No elevation figure. · Low confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperaturePleasant3.6
Race-date highs ranged 22-33 °C (72-91 °F) over 2022-2026: mostly warm, sometimes hot. · Medium confidence
- Weather reliabilityReliable3.7
Settled early autumn, but race-date highs swung between 24 °C (75 °F) and 33 °C (75-91 °F) across years. · Low confidence
- Venue beautyLovely3.8
Ada Ciganlija lake island park with beaches and river views. · Low confidence
- Spectator friendlyEasy3.8
Compact Ada Ciganlija venue with swim, transitions and run close together. · Low confidence
Course traits, not part of the score
- Low altitudeSea level4.7
Belgrade is roughly 70-120 m (230-390 ft) above sea level. · Medium confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.
- Hotel availabilityGood4.3
Capital city with abundant lodging and a small field. · Low confidence
- Hotel valueGood4.0
Serbian prices are generally lower than in Western Europe, but no race-week data was found. · Low confidence
- WalkabilitySome driving3.2
Staying on Ada Ciganlija is walkable. City hotels need a taxi or shuttle, 5-10 km (3-6 mi). · Low confidence
- Travel easeEasy4.0
Capital with an international airport and many European connections. · Low confidence
- LogisticsSimple3.7
Single Ada venue, though vehicle access is closed from 05:00 to 16:00 on race day. · Low confidence
- Town and foodGood4.1
Large capital with a known food and nightlife scene. · Low confidence
Key facts
- Location
- Belgrade, Central Serbia, Serbia
- Typical month
- September
- Latest or next date
- 12 September 2027
- Organiser
- IRONMAN
- Field size
- About 1,500 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
- Sava Lake (Savsko jezero), Ada Ciganlija (lake)
- Water temperature
- 20–23 °C (68–73 °F)
- Bike laps
- 2
- Run shade
- Some shaded sections along Ada Lake
- Air temperature
- 22–30 °C (72–86 °F)
- Nearest airport
- Belgrade Nikola Tesla (BEG)
- Where to stay
- Ada Ciganlija / Cukarica, Novi Beograd, Old town (Stari Grad)
- Booking
- Capital city with a large hotel stock; field is small (c.1,500) so no reported sell-outs.
What racers and reviewers say
- Kurir (Serbian press preview)Raced 2024 · article · Positive
Pre-race coverage for the first edition: organisers expect one of the fastest races of 2024, with a closed-highway bike course toward Obrenovac and a riverside run. About 500 had registered five months out against hopes of 1,000 or more, and 40 world-championship slots were up for grabs.
- Novosti (Serbian press preview)Raced 2025 · article · Positive
Race director and Ironman's European director talk up a new bike course described as flat, fast and completely safe, with registrations from 64 countries. This is promotional rather than athlete feedback.
“staza za rekorde”
- Novosti road-closure notice, 2026Raced 2026 · article · Positive
Lists extensive closures including Ada Bridge, the inner ring road and A2 motorway sections, with 07:00 start and Ada access closed 05:00-16:00 on 13 September 2026. Confirms c.1,500 athletes from 76 countries and a flat 90 km (55.9 mi) bike.
- Serbia.travel event listingRaced 2026 · article · Positive
Official tourism listing describing the third edition: more than 1,000 participants from around the world, swim in Sava Lake, flat bike and half marathon from Ada Ciganlija.
- RaceRaves race pageRaced 2026 · aggregator · Mixed
No athlete reviews posted yet. Page gives organiser-sourced course facts: 1.9 km (1.2 mi) lake swim, almost flat two-loop 90 km (55.9 mi) bike, fast flat shaded run, water about 23 C (74 F) and historical race-date highs of 22-33 C (72-91 F).
Show 1 more
- EXPO 2027 Belgrade newsRaced 2024 · article · Positive
Notes city backing for the first IRONMAN 70.3 in Serbia and this part of Europe, with over 1,000 competitors forecast. No course or results detail.
Sources
Pages we used for facts and ratings. See how we rate.
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