IRONMAN 70.3 Duisburg

Duisburg, Germany · August · IRONMAN 70.3

Why people love it

3.4Good

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 satisfactionLoved3.7
The field grew from about 1,500 in 2021 to about 3,000 in 2022 and press is positive, but no first-person reviews were found. · Low confidence
OrganizationWell run3.7
The field doubled in a year with no major complaints; the 2021 road surface was criticised and then improved. · Low confidence
First timer friendlyFriendly3.9
Flat course, calm regatta swim and a compact park venue, though rain and cool weather are possible. · Medium confidence

PR potentialFast4.3
Flat bike with a 1:56:44 fastest split (46 km/h (28.6 mph), 29 mph) and a 3:44:50 winning time in 2023. · Medium confidence
Course easeModerate4.1
Flat bike and run and a calm swim; weather is the main variable. · Medium confidence

4.1Very good

Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.

Wetsuit legalUsually3.7
Water temperature is not documented; one unverified source says about 21 °C (70 °F). · Low confidence
Water temperatureComfortable3.8
Reported at about 21 °C (70 °F), unverified. · Low confidence
Calm waterGlassy4.6
Sheltered rowing regatta basin. · Medium confidence
Swim easeEasy4.4
Straight 1.9 km (1.2 mi) course that is easy to navigate, with wave starts reducing contact. · Medium confidence
Swim experienceGreat3.5
Clean water in a concrete rowing basin; waves were spread over more than an hour. · Low confidence

3.0Good

Road surface, closures, scenery and wind. Counts for 19% of the overall score.

Road surfaceMixed3.2
Poor surface criticised in 2021 and better in 2022; wet roads were the issue in 2023. · Low confidence
Road closuresMostly closed4.1
Local press noted that major traffic axes were closed for hours. · Low confidence
Bike sceneryPleasant2.8
Industrial Ruhr scenery with the Rhine and a bridge as highlights. · Low confidence
WindMostly calm3.5
Open Rhine plain; no wind complaints found. · Low confidence

Bike speedFast4.3
Flat, fast course; 90 km (56 mi) fastest split of 1:56:44. · Medium confidence
Bike flatnessPancake flat4.7
Described as flat in every report; no gain figure published, likely under 300 m (1,000 ft). · Medium confidence
Bike simplicityMostly simple3.5
Urban and industrial route with bridges and turns. · Low confidence

3.3Good

Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.

Crowd supportStrong3.6
Many spectators in 2025 and a stadium finish; thin on the bike. · Low confidence
Aid stationsGood3.6
Standard IRONMAN aid; no complaints found. · Low confidence
Run sceneryPleasant3.2
Park lakes and a stadium. · Low confidence
Run conditionsEasy4.1
Park setting and mild to cool weather in 2023 and 2025. · Low confidence

3.2Good

Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.

Air temperaturePleasant3.9
Highs at or below 17 °C (63 °F) in 2023 and mild late-summer weather in 2025. · Low confidence
Weather reliabilityVariable3.0
Rain in 2021 and 2023, fine in 2022 and 2025. · Low confidence
Venue beautyPleasant3.0
Sports park in an industrial city. · Low confidence
Spectator friendlyEasy4.2
Compact park venue, three-loop run and a stadium finish. · Low confidence

Low altitudeSea level5.0
Rhine lowland at about 30 m (100 ft). · Medium confidence

4.1Very good

Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.

Hotel availabilityGood4.2
Large urban area with plenty of hotels. · Low confidence
Hotel valueGood3.8
Normal German city pricing. · Low confidence
WalkabilitySome driving3.2
The park venue is slightly outside the centre. · Low confidence
Travel easeEasy4.2
Düsseldorf airport and a dense rail network. · Medium confidence
LogisticsSimple3.8
The park hosts the swim, transitions and run, with the finish in the adjacent arena. · Low confidence
Town and foodFine3.4
Harbour dining; the city is functional rather than famous. · Low confidence

Runner's World Germany (2025)Raced 2025 · article · Positive
Over 2,300 starters in mild late-summer weather. Flat bike past the Brücke der Solidarität, three-lap run in the Sportpark, finish in the stadium with many spectators.
“Stimmungsvolles Finish”
Runner's World Germany
Runner's World Germany (2023)Raced 2023 · article · Mixed
Cool, wet autumn-like day at or below 17 C (63 F). One swim lap in the Regattabahn with waves over an hour, two flat bike laps on wet roads, and an ideal cool half-marathon.
Runner's World Germany (2022)Raced 2022 · article · Mixed
About 3,000 starters, double the debut. Better weather than 2021; bike surface criticism from 2021 eased. A 67-year-old athlete died after collapsing at the swim start.
Tri247Raced 2019 · article · Positive
Launch announcement describing clean regatta-course water, a 90.1 km (56 mi) bike through Duisburg and the Ruhr, and a three-loop run past lakes finishing in the football arena.
festivalsindeutschlandRaced 2025 · aggregator · Mixed
Event listing for 2025 with 2,000+ athletes, summer temperatures, slots awarded and a harbour finish; conflicts with press reports on swim and finish location.

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endurance-data.comRaced 2023 · aggregator · Mixed
Results database: 2,031 starters and 1,934 finishers in 2023, with fast winning times.

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