Rio Half Marathon 2027: 21K Course, Entry & Hotels

If you live outside Brazil, you skip the lottery entirely

For the 2027 edition the organiser confirmed direct international entry: foreign runners can register in any distance without entering the sorteio, paying in US dollars (roughly US$80 for the 5K up to US$300 for the 21K+42K Desafio). This is the most important line in this guide — a visitor's only real risk is the race selling out, not losing a draw.

Action: register as soon as the international window is live rather than waiting for the Brazilian lottery calendar.

If you are in Brazil, the 21K is lottery-only for the general public

Both the 42K and the 21K are distributed to the general Brazilian public exclusively by free lottery. Registering interest costs nothing; being drawn only gives you the right to buy, inside a short purchase window.

The 21K lottery calendar for 2027

Lottery registration ran 9–21 November 2026, the draw was on 25 November, results were published on 27 November, and purchase waves for successful entrants opened from 30 November 2026. Missing your purchase wave releases the slot to someone else.

The 42K ran earlier (registration 31 August–13 September 2026, draw 24 September). Do not assume one calendar covers both distances.

Prices and who gets a discount

The 21K was announced at R$349 with the official shirt, or R$309 without a shirt in the running-club (assessoria) category. Athletes with disabilities and senior runners receive a 50% discount. Foreign entries are billed in dollars instead.

Buy only through the official channel

Entries are sold through the organiser's official ticketing platform linked from maratonadorio.com.br. There is no legitimate resale market: bib transfers and third-party sales are not recognised, and a bib bought from a stranger will not be released at Casa Maratona.

Rule of thumb: if it is not the official site or the accredited travel agency list, walk away.

Accredited travel agencies are the guaranteed-bib route

The festival accredits travel agencies that bundle a confirmed bib with hotels and transfers. It costs more than a bare entry, but it removes every timing risk and is worth pricing if you are building a whole Rio trip around race weekend.

What you need ready at checkout

Full legal name exactly as printed on your passport, date of birth, passport number (or CPF for residents), shirt size, estimated finish time — this sets your wave — an emergency contact, and a card that works for Brazilian or USD transactions. Name and date-of-birth errors are painful to correct later.

After you are in: the pre-race paperwork

Complete the health and responsibility term on the athlete platform, then book a Casa Maratona collection slot. Third-party collection is only possible if you authorise someone in the platform in advance — and once you do, you can no longer collect the bib yourself.

Leblon start: fast energy, narrow patience

The race begins on Avenida Delfim Moreira near Jardim de Alah, in the dark. Wave starts reduce congestion, but the first beachfront kilometres still tempt runners into weaving between groups. Let pace come to you instead of spending your race overtaking.

Verdict: efficient start, but seed yourself honestly.

Ipanema and Copacabana: flat, scenic and exposed

Avenida Vieira Souto, Rua Francisco Otaviano and Avenida Atlântica deliver the postcard half marathon, and this is where the sunrise arrives over the Atlantic. The profile is quick, yet there is almost no shade and the sea wind can reverse direction around the headlands at Arpoador and Leme.

Túnel Novo and Pasmado: the rhythm breakers

The move from Copacabana into Botafogo uses Avenida Princesa Isabel, Túnel Novo, Lauro Sodré and Túnel do Pasmado. These are not mountain climbs, but the ramps, warm enclosed air and GPS wobble interrupt an otherwise flat rhythm — expect two or three slow-looking splits and do not chase them back.

Aterro and the Centro loop: hold form

The course runs past Botafogo Bay into Aterro do Flamengo and a Centro turnaround before returning to the finish. This is fast road running, but the wide open avenues feel long once the sun is up, and the last 4 km are where the three-hour cut-off catches people who started too quickly.

How the 21K compares with the 42K

The half is the more PB-friendly race of the weekend: no Barra rollers, no Avenida Niemeyer, a shorter time in the sun and a start you can walk to from a South Zone hotel. If you want a fast Rio result rather than the full destination-marathon experience, this is the distance to pick.

The honest verdict

The Rio 21K is a genuinely quick, genuinely beautiful coastal half marathon — and it is not effortless. Crowded early waves, tunnel ramps, high humidity even in late May, and a firm three-hour limit mean preparation still decides your morning.