Berlin Triathlon (Hauptstadttriathlon, Treptower Park)
Berlin (Treptower Park / Insel der Jugend), Germany · June · Independent (Ausdauerfreunde e.V. with Triathlon Verein Berlin 09; German Triathlon Union)
Course: 1.5 km (0.9 mi) swim, 36.5 km (22.6 mi) bike, 9.3 km (5.8 mi) run. 2026 listing: 1.5 km (0.93 mi) / about 36.45 km (22.6 mi) / 9.3 km (5.8 mi); 2021 was 38 km (23.6 mi) and 9 km (5.6 mi); 2015 was 40 km (24.9 mi) and 10 km (6.2 mi). Check the athlete guide
Why people love it
- Swim loops Insel der Jugend in the Spree, and the bridges give spectators close views for free.
- Closed, flat bike loops of 6.34 km (3.9 mi) and a flat run through Treptower Park.
- Treptower Park S-Bahn station is at the venue, and BER airport is about 20 km (12 mi) away.
- Sprint runs Saturday and Olympic Sunday from the same park, so first-timers can start short.
- The 2026 Olympic bike is about 36 km (22.6 mi), so fast times are likely.
Watch out for
- Drafting has been allowed in age-group races. Expect packs, tight corners and crashes on the loops.
- Wetsuit rule is set on race morning. The river is murky green, 17 to 20 °C (63 to 68 °F).
- Heat reached 35 °C (95 °F) in 2014, when run water ran short and there were no sponges.
- Olympic needs a German Triathlon Union start pass or day licence, and transition has been called too small.
- Distances change year to year, so check the athlete guide. Few reports cover recent editions.
Race
How racers feel about it, how well it is run, and how it treats a first timer. Counts for 30% of the overall score.
Toughness: Moderate
- Racer satisfactionLoved3.8
Most reports from 2013 to 2026 are positive and finishers were proud, with complaints about drafting packs, heat and water supply. · Medium confidence
- OrganizationWell run3.5
Closed roads and smooth 2020, 2021 and 2026 reports, but a 2014 water shortage, a small transition and an unclosed 2015 run course. · Medium confidence
- First timer friendlyDoable2.9
Licence or day pass needed, two swim laps in murky river water, and drafting packs on up to nine laps. · Medium confidence
Course traits, not part of the score
- PR potentialFast3.7
Flat with drafting allowed, but the 2026 bike is about 36 km (22.6 mi), so times do not match a standard Olympic. · Low confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 16% of the overall score.
- Wetsuit legalCoin flip3.0
Judges decide on race morning: banned in the 2014 heat, worn at 17 °C (63 °F) in 2013 and 19 °C (66 °F) in 2015. · Medium confidence
- Water temperatureComfortable3.6
Recorded at 17 °C (63 °F), 19 °C (66 °F), 20 °C (68 °F) and warm in 2026, but described as green and murky. · Medium confidence
- Calm waterMostly calm3.7
Sheltered Spree loop around the island. Wind chop in 2013 cancelled a youth swim. · Medium confidence
- Swim easeModerate3.3
Two laps of about 750 m (0.47 mi) in murky water. · Medium confidence
- Swim experienceFine3.3
Bridge crowds and a tower make it photogenic, but athletes describe murky green river water. · Medium confidence
- Swim supportGood3.5
Kayaks are visible in photos and bridges give crowd cover. Few athletes describe safety boats or lifeguards. · Low confidence
Bike
Road surface, closures, scenery and wind. Counts for 18% of the overall score.
- Road surfaceMixed3.4
City asphalt. Nobody complains about the surface, but no report confirms it is smooth. · Low confidence
- Road closuresMostly closed4.2
Closed circuit per the organiser and reports, though some pedestrians and cars were noted in 2014 and the 2015 run was not fully closed. · Medium confidence
- Bike sceneryPleasant3.2
Repeated laps of park and forest roads. Pleasant but repetitive. · Low confidence
- WindMostly calm3.6
Reports mention only light wind, and the park roads are lined with trees. · Low confidence
Course traits, not part of the score
- Bike speedFast3.9
Drafting is allowed, and a 2015 rider averaged about 37 km (23 mi)/h (23 mph). · Low confidence
- Bike flatnessPancake flat4.5
Flat city loops. No elevation gain is published. · Low confidence
- Bike simplicitySome technical parts2.5
Tight four-corner block course with many laps. Packs, cutting in and crashes are reported in 2013 and 2015. · Medium confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportStrong3.8
Loud helpers and spectators, with bridges and a picnic mood. The loops pass the same points repeatedly. · Medium confidence
- Aid stationsStandard2.9
Run water ran out at 7.5 km (4.7 mi) in 2014 and sprint stations offered only cups. Stations were fine in 2015. · Medium confidence
- Run sceneryBeautiful3.6
Spree bank, Treptower Park and Puschkinallee. Pleasant, with little shade. · Medium confidence
- Run conditionsModerate3.2
Two laps in heat with little shade. · Medium confidence
Course traits, not part of the score
- Run flatnessFlat4.5
Flat 9.3 km (5.8 mi) run. · Medium confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 13% of the overall score.
- Air temperatureWarm or cool3.3
Rain at 12 °C (54 °F) in 2013, 35 °C (95 °F) in 2014, and 20 to 25 °C (68 to 77 °F) otherwise. · Medium confidence
- Weather reliabilityVariable3.0
A cold storm in 2013 and a heatwave in 2014 show wide swings. Most other years were sunny. · Medium confidence
- Venue beautyLovely3.7
Park setting with the Abteibrücke tower on Insel der Jugend, in an urban surround. · Medium confidence
- Spectator friendlyEasy4.1
Free entry, bridge views of the swim and many laps past the same spots. · Medium confidence
Course traits, not part of the score
- Low altitudeSea level4.9
About 35 m (115 ft) above sea level. · High confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 10% of the overall score.
- Hotel availabilityGood4.3
Large city with plentiful hotels, though June weekends are busier. · Medium confidence
- Hotel valueGood3.5
Berlin is moderately priced for a European capital. No race-specific price data. · Low confidence
- WalkabilityWalkable3.9
Treptower Park S-Bahn station is beside the venue, and swim, transition and run share the same park. · Medium confidence
- Travel easeEasy4.3
Berlin Brandenburg airport is about 20 km (12 mi) away, with S-Bahn, U-Bahn and national rail. · Medium confidence
- LogisticsSome complexity3.4
One venue and one transition, but Olympic entrants need a start pass or day licence and transition is tight. · Low confidence
- Town and foodGreat4.5
Berlin has food and nightlife of every kind next to the venue. · Medium confidence
Key facts
- Location
- Berlin (Treptower Park / Insel der Jugend), Berlin, Germany
- Typical month
- June
- Latest or next date
- 5 June 2027
- Organiser
- Independent (Ausdauerfreunde e.V. with Triathlon Verein Berlin 09; German Triathlon Union)
- Field size
- About 400 athletes
- Distances (non-standard)
- 1.5 km (0.9 mi) swim, 36.5 km (22.6 mi) bike, 9.3 km (5.8 mi) run
- Swim venue
- River Spree around Insel der Jugend, start near the Abteibrücke (river)
- Water temperature
- 17–20 °C (63–68 °F)
- Wetsuit
- Optional
- Swim start
- wave
- Swim laps
- 2
- Run laps
- 2
- Run shade
- Little on the Puschkinallee and Spree-bank stretches
- Air temperature
- 12–28 °C (54–82 °F)
- Humidity
- Moderate
- Altitude
- 35 m (115 ft)
- Nearest airport
- Berlin Brandenburg (BER), 20 km (12 mi) away
- Where to stay
- Treptow, Friedrichshain, Kreuzberg
- Booking
- Berlin has plentiful hotels; Treptow, Kreuzberg and Friedrichshain are close. Road restrictions on Neue Krugallee, Baumschulenstraße, Köpenicker Landstraße, Bulgarische Straße, Alt-Treptow and Puschkinallee over the weekend.
What racers and reviewers say
- EiswuerfelImSchuh blog (Olympic, 2015)Raced 2015 · blog · Positive
Olympic report with a course best. Swim of more than 30 minutes around the island in a wetsuit, then nine laps of a four-corner block course with drafting allowed and cutting-in riders, a crowded T1, two 5 km (3.1 mi) run laps with one confusing fork. Helpers and crowds were loud and encouraging.
- EiswuerfelImSchuh blog (Olympic, 2014)Raced 2014 · blog · Mixed
Hot 2014 race where the wetsuit ban came late and the water was green and murky. Nine laps of 4.3 km (2.7 mi) with drafting and tight corners; run water ran out at 7.5 km (4.7 mi). Praised volunteers and fans but criticised water supply, cooling and bike safety.
- Das Tridream blogRaced 2015 · blog · Mixed
Olympic in sunny 25 °C (77 °F) with 19 °C (66 °F) Spree water, two swim laps of about 750 m (0.47 mi), then nine 4.3 km (2.7 mi) laps on closed roads that felt dangerous with drafting. Run on Puschkinallee with little shade, transition too small, run course not closed off. Still enjoyed it.
- TuS Neukoelln club reportRaced 2013 · blog · Mixed
Cold, wet June 2013: 12 °C (54 °F) air, 17 °C (63 °F) Spree water, wind-chopped swim (school-age swim cancelled), rain, crashes and punctures on drafting-legal laps, and a muddy run with a five-step staircase. Club results celebrated, but conditions harsh.
- RSV Osthelden (Radsportbezirk Westfalen-Mitte)Raced 2020 · article · Positive
Sunny 2020 edition with 20 °C (68 °F) water, a closed 6.3 km (3.9 mi) bike circuit with drafting, and a flat 5 km (3.1 mi) run through Treptower Park. About 1,200 starters with small start waves under Covid rules; upbeat podium report.
Show 3 more
- Berlin Triathlon Union (BTU info)Raced 2021 · article · Positive
Calls the event Berlin's largest inner-city triathlon, over 1,000 starters in 2021 with the best weather. Olympic was the biggest field (about 400), sprint over 360. Drafting allowed on all distances, which made tactical racing. No problems reported.
- SISU Berlin club reportRaced 2026 · blog · Positive
Club recap of the 20th edition on 6-7 June 2026: perfect sun, warm Spree and full-length swims allowed for the first time, successful weekend with age-group results and strong team spirit. Short on course detail.
- Berlin.de event listingRaced 2026 · article · Positive
City listing: swim around Insel der Jugend, 6.34 km (3.9 mi) bike loop along Plänterwald ridden up to 14 times, run through and around Plänterwald, more than 1,700 athletes, road restrictions on nearby streets over the weekend, hot showers and massage.
Raced Berlin Triathlon (Hauptstadttriathlon, Treptower Park)? Your notes on the course, conditions and logistics help the next athlete decide.
Sources
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