Qualla: Praia do Cassino

Praia do Cassino: Introduction

Sun, 21 Jun 2026 00:00:00 GMT

Photo credit Paula Cavalheiro, CC BY-SA 3.0. Nobody can tell you exactly how long Praia do Cassino is, and that is part of its strangeness. Ask different sources and you will hear anywhere from 212 to 254 kilometers, a margin of error wider than most countries' entire coastlines. The reason is a genuine mathematical puzzle called the coastline paradox: the more precisely you measure a shore, tracing every bend and inlet, the longer it grows, with no final answer. So Cassino simply runs. It begins at the stone breakwaters guarding the port of Rio Grande and does not stop, in any meaningful sense, until it reaches the mouth of the Chuí Stream on the border with Uruguay. For a stretch of that distance, it is plausibly the longest uninterrupted sand beach on Earth.

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Image: Paula Cavalheiro | CC BY-SA 3.0

Praia do Cassino: The Casino in the Name

Sun, 21 Jun 2026 00:00:00 GMT

Photo credit Gaiam, Public domain. The name is a relic of a more glamorous era. Cassino means casino, and the beach earned it honestly. When the resort opened in 1890, developed by a company that built a tourist complex on the dunes and debuted it on the 26th of January that year, it drew well-off Brazilians, many...

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Image: Gaiam | Public domain

Praia do Cassino: A Rocket, a Shipwreck, and a Statue

Sun, 21 Jun 2026 00:00:00 GMT

Photo credit Artur Vaz, CC BY-SA 4.0. Cassino's flat immensity has attracted some unlikely visitors. On 12 November 1966, as a total solar eclipse darkened the sky above the beach, NASA scientists and the U.S. Army stood on this sand and fired sounding rockets into the upper atmosphere to study it in the eclipse's sh...

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Image: Artur Vaz | CC BY-SA 4.0

Praia do Cassino: The Sailing Cart and the Sea Lions

Sun, 21 Jun 2026 00:00:00 GMT

Photo credit Mauren da Silva Rodrigues, CC BY-SA 3.0. Where the beach meets the port, the great breakwaters reach out into the Atlantic, walls of stone built to keep the navigation channel to Rio Grande open. Along the western jetty, the Molhe Oeste, you can ride something delightfully odd: a small cart pushed by sail, gliding along...

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Image: Mauren da Silva Rodrigues | CC BY-SA 3.0

Praia do Cassino: A Beach Built for Extremes

Sun, 21 Jun 2026 00:00:00 GMT

Photo credit Mauren da Silva Rodrigues, CC BY-SA 3.0. Everything about Cassino runs to excess, even its sports. The beach hosts the Cassino Ultra Race, billed as the largest beach ultramarathon in the world, sending runners pounding 230 kilometers across the sand, beginning down near the Chuí frontier and finishing at Cassino itself...

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Image: Mauren da Silva Rodrigues | CC BY-SA 3.0