A small group of riders is gearing up to pedal almost the entire length of the Algarve in a single day, all in the name of cancer research and support. The Travessia Solidária — literally 'The Algarve from one end to the other' — sets off from Vila Real de Santo António on the Spanish border on Sunday, October 25, and finishes around 170km later at Cape St Vincent, the dramatic cliff-top point near Sagres that marks mainland Europe's south-western corner.

The route reads like a greatest-hits tour of the region. Riders will pass through Tavira's historic centre, the fishing town of Olhão, Faro, the market town of Loulé, Almancil, Lagoa, Portimão and Lagos before the final stretch through Vila do Bispo to the cape. If you've ever wanted a one-day snapshot of the Algarve beyond its beaches, this is roughly the itinerary.

The cause is the Liga Portuguesa Contra o Cancro (LPCC), Portugal's League Against Cancer, with proceeds earmarked for its southern regional branch. Organisers have framed the ride around a motto that translates as 'cycling with purpose, paying tribute from the heart', describing the day as one of pushing limits, remembrance and solidarity. The plan is for it to become an annual fixture, so if you miss this year's edition, the concept should return.

Registration is already closed — it's a deliberately small group of cyclists — but there are two ways to get involved if you're in the region. Donations are being collected via MB Way on 910 060 586 (include the word 'Travessia' in the payment description) and in person at Gelados & Companhia in Carvoeiro. Alternatively, line the route: organisers are explicit that crowds and encouragement along the way are what keep the riders going kilometre after kilometre.

It's also a nicely local story off the bike. A cluster of Algarve businesses — including Grid E-Bike Store, Musa Carvoeiro, Kube Boutique, Vila Nova Carvoeiro, My Flow Studio, Viva Property and Café Brasil Marisqueira — are behind the challenge, a reminder of how tightly knit the region's small-business community is.

Why should a traveller care? Late October is a lovely, underrated time to be in the Algarve: summer crowds are gone, temperatures are still mild, and coastal towns like Tavira, Lagos and Sagres feel like themselves again. If your trip happens to overlap with the ride on October 25, you could cheer the cyclists through town in the morning, then explore at your own pace — or simply use their border-to-cape route as inspiration for your own multi-day cycling or road-trip itinerary. The Vila Real de Santo António to Cape St Vincent line is a genuinely satisfying way to understand the region's geography, from the eastern lagoon-and-salt-marsh coast to the wilder, wind-scoured west.

Even if charity rides aren't your thing, a small local event like this is a good excuse to see a different side of one of Europe's most visited coastal regions — and to spend a day in towns most visitors only glance at from the motorway.