IRONMAN 70.3 Tallinn features a bay/lake swim, flat bike and run courses in Estonia’s capital. Athletes enjoy a fast course with scenic city views and mild summer weather. The event is part of the IRONMAN Tallinn triathlon festival, which kicks off with a charity run and IRONKIDS races.
The event center is located by the Baltic Sea, with the Unibet Arena race center, partner hotel Original Sokos Hotel Viru, and airport all within a 10 km radius. The competition courses run through the natural landscape of Harju County, known for its speed and flatness—making it ideal for setting personal records.
Key Event Highlights & Logistics:
The official nutrition partner of IRONMAN Tallinn 70.3 is ENERVIT. Athletes can fuel up with ENERVIT products at every aid station on the course.
Products available at aid stations include:
Athletes who register within the first 90 days of general registration opening can adjust their race date or submit for fee-free transfer before June 24th of the race year.
The swim takes place on a single-loop course in Lake Raku (average depth 6.4 m, maximum depth 18.7 m). Transition 1 is located on Karuse and Sinirebase streets, about 300 m from the swim exit. The bike course runs out of the city towards southern villages, looping through Tutermaa, Tallinn, Unibet Arena, Vääna, and finishing at Transition 2 in front of Unibet Arena (4 aid stations). The 21.1 km run course is a flat 2-lap run along Tallinn Bay finishing in front of Unibet Arena (8 aid stations).
The swim takes place on a single-loop course in Lake Raku. Lake Raku offers clear water, a sandy lakebed and sufficient depth for a smooth open-water swim. The average depth of the lake is 6.4 m and the maximum depth is 18.7 m. The swim venue provides a stable and predictable setting.
Transition 1 is located on Karuse and Sinirebase streets, next to Lake Raku. The distance from swim exit to Transition 1 is approximately 300 m.
After leaving Transition 1, athletes head out of the city towards the southern villages. The course returns via the Tutermaa area towards Tallinn and Unibet Arena, before heading back into the countryside through Vääna and Tutermaa. The bike course finishes at Transition 2 in front of Unibet Arena. There are 4 aid stations on the bike course.
Transition 2 is located in front of Unibet Arena, right next to the finish line, allowing spectators to conveniently follow athletes.
The IRONMAN 70.3 Tallinn run course is one of the fastest in the world and offers picturesque views of Tallinn Bay. The 21.1 km course is a 2-lap run and finishes in front of Unibet Arena. There are 8 aid station points on the course.
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During registration, the team captain creates the relay team by selecting a team name and adding at least one team member to claim the entry. Team members who receive a registration claim email from the captain can complete their registration directly via that link. If additional team members need to be added later, the team captain must contact the event email address. The new team member will then receive an email invitation to register. At checkout, the team captain pays the full registration fee. Depending on federation requirements, some team members may need to purchase a one-day license.
Yes. Relay teams must consist of two or three athletes. Two-person teams may divide the swim, bike, and run legs in any combination. A third team member may be added later if desired, up to two weeks prior to race day.
No. Each athlete may only compete on one relay team per event.
No. Relay teams may include athletes of different ages and genders. All participants must be at least 18 years old on race day.
Only the team captain may request team changes. Please contact the event email address with the name of the team member to be removed and the full name and email address of the new team member. All changes must be completed no later than 10 days before race day.
As team captain, log into your profile at https://my.ironman.com, click on 'Registrations', click 'Race Details', click 'Manage Registration', and navigate to 'Registration Claims'. Click the red button 'Resend emails for unclaimed registrations'.
Relay team captains may be eligible for a partial refund, depending on the timing of the withdrawal. Please refer to the Relay Teams page for full refund details and deadlines.
Yes. All relay team members must attend athlete onsite registration together. Each team receives one bib number, one race package (swim cap, bike sticker, helmet sticker, two bibs), and individual race bags and finisher t-shirts.
All relay team members must present a valid photo ID. Teams must be complete no later than two weeks before race day.
No. Each relay team receives one timing chip, which acts as a relay baton. The cyclist collects the timing chip at bike check-in and it is transferred between athletes during transitions.
Transition bag management for relay teams varies by event and venue setup. In general, each relay team member is responsible for managing their own equipment for their race leg. Specific guidelines will be communicated on the race-specific relay page.