Travessia do Canal de Ilhabela

The Travessia do Canal de Ilhabela is an open water swimming race held in the sea off the coast of São Paulo, Brazil, finishing at the sands of Praia Grande Balneário dos Trabalhadores. Taking place in the maritime channel that separates the mainland town of São Sebastião from the island of Ilhabela, the competition draws its inspiration directly from the historic crossing of the English Channel. Swimmers navigate the open Atlantic strait to test their endurance against the coastal elements, choosing between a 2,500-meter crossing and a longer 3,600-meter route. Ecooutdoor Sports Business produces the event, orchestrating an open-water challenge shaped by maritime geography.

Crossing the Toque-Toque Channel to Praia Grande

Rather than adhering to a rigid geometric course, the exact trajectory across the channel between São Sebastião and Ilhabela is decided on race day based on the real-time direction of sea currents and local wind conditions. For competitors entering the shorter 2,500-meter distance, the starting line lies off Ilha das Cabras, whereas the 3,600-meter event takes swimmers across the broader waters. Stepping off a boat into the deep water of the strait requires steady composure as the open surface stretches ahead. In past editions, swimmers were ferried across by schooners to Praia do Porto Grande on the São Sebastião shoreline, jumping into the sea to undertake the 3.8-kilometer swim back toward the island.

Past crossings have run along the demanding eastern course, where head-on winds often whip across the strait and complicate the early strokes away from the start. Swimmers in previous years have had to battle adverse weather conditions marked by relentless coastal breezes and sweeping currents over distances reaching up to four kilometers. Navigating these shifting currents requires thorough physical stamina as well as mental discipline, keeping your sighting sharp while your arms pull steadily through choppy open water. Held every November, the event establishes clear safety requirements for all entrants venturing into the channel. Swimmers who wish to extend their stay can link this crossing with the Circuito Paulista de Maratonas Aquáticas — Ilhabela (novembro), which takes place just two kilometers away seven days later.

The Toque-Toque Channel: currents and reef life

The crossing traverses the 18-kilometer Toque-Toque Channel, the maritime waterway that separates the mainland from Ilha de São Sebastião, the second-largest maritime island in Brazil. Water flows through this strait, creating variable surface conditions. About eight kilometres away along the mainland coast, the sheltered bay of Barequeçaba presents a completely different aquatic profile, where the sea floor deepens very gradually to reach only waist height twenty meters from the shore. In that mainland inlet, waves remain consistently weak over dark, compact sand favored by runners and walkers, backed by an inviting row of summer homes, inns, and seaside restaurants. Along the rocky shores of the island itself, the underwater margins shelter a rich marine habitat.

Ilhabela State Park: mountain peaks and 250 waterfalls

Ilhabela State Park is a coastal conservation unit spanning 27,025 hectares across twelve islands, two islets, and two reefs. The archipelago incorporates the smaller outer islands of Búzios and Vitória alongside the main landmass of São Sebastião, where rugged mountain peaks soar up to 1,379 metres in altitude. This towering mountainous backbone captures moisture from oceanic winds, feeding thousands of freshwater streams and more than 250 named waterfalls across the territory. On the coastal plains, meandering rivers snake toward the sea, creating sheltered estuaries that support flourishing mangrove ecosystems. At Praia da Feiticeira, two natural waterfalls flow into the coastal strip between the sand and the southern shoreline. Visitors to that cove can also rinse off under an artificial waterfall originally constructed by former local farm owners, which channels freshwater directly onto the beach.

The archipelago also provides a sanctuary for migratory bird species. Swimmers spending extra days on the island can venture past the channel side to explore the dramatic eastern Atlantic coastline. The famous Praia de Castelhanos spans approximately two kilometers inside an oceanic bay whose curved contours form the shape of a heart. Reaching this remote eastern bay requires an adventurous 22-kilometer overland trail suitable only for 4x4 vehicles, making it the only beach on the eastern coast accessible by motorized land transport. Hiking trails departing from the sands of Castelhanos lead into the rainforest to secluded freshwater cascades. Farther along the coast lies Praia do Bonete, a 600-meter sandy beach renowned as a premier surfing destination on the northern coast of São Paulo state.

From shell mounds to pirate hideaways on São Sebastião

Human presence around the channel dates back more than 2,000 years, starting with indigenous shell-mound builders whose middens dot the coast, followed in later eras by ceramic-producing tribes. European explorers arrived in 1502, when an expedition commanded by Gonçalo Coelho and Amerigo Vespucci christened the main island São Sebastião. Maritime trade evolved into resource exploitation during the 18th century, when a dedicated whaling station operated at Ponta das Canavieiras to produce oil until around 1850. Agricultural estates soon reshaped the island interior, beginning with sugarcane cultivation that took root in the 17th century at properties such as Engenho São Mathias, located about seven kilometres from the race venue. By 1912, official cartographic records counted twenty-seven active sugar mills across the island, every one of them dedicated to distilling aguardente.

Praia Grande: sunset pier and beach life

The crossing concludes on the sands of Praia Grande Balneário dos Trabalhadores, an expansive 600-meter beach covered with coarse, yellowish sand. The shore is classified as a 'praia de tombo', meaning the seabed drops off steeply into deep water just paces from the edge of the surf. On the left end of Praia Grande, a rustic wooden pier stretches out over the water, serving as an embarkation point for dive boats. As the afternoon progresses, the beach becomes one of the most celebrated viewpoints on the island for watching the sunset blaze across the channel waters. The shoreline stays lively after dark with open kiosks serving refreshing drinks alongside live music right on the sand. In August, the bay celebrates the annual Tainha Festival, welcoming visitors with festivities. For swimmers emerging from the strait, Praia Grande provides a classic Brazilian beachside recovery where you can celebrate crossing the Toque-Toque Channel.