Estoril sits at the start of one of Portugal's most rewarding short coastal drives – the free N6 “Marginal” along the bay, the wild Guincho dunes, the Cabo da Roca clifftops and the green climb into Sintra, all within a 40-kilometre loop. You don't need a full day or a toll road; you need a morning, a car and this route. Here's how to drive it well in 2026.
| Leg | Road | Distance | Highlight |
|---|---|---|---|
| Estoril → Cascais | N6 Marginal | 3 km | Bay views, beach stops |
| Cascais → Guincho | N247 | 6 km | Boca do Inferno, dunes, surf |
| Guincho → Cabo da Roca | N247 | 10 km | Mainland Europe's westernmost cliff |
| Cabo da Roca → Sintra | N247/N375 | 15 km | Forest hairpins, palaces |
| Sintra → Estoril | N9/A5 or EN249 | 15 km | Fast return (A5 tolled) or scenic |
Three easy kilometres past Tamariz beach and the marina approaches. It's 50 km/h, camera-watched and busy on weekends – treat it as a cruise, not a sprint.
Past Cascais lighthouse, stop at Boca do Inferno (“Mouth of Hell”) sea cliffs, then follow the N247 along the dunes to Praia do Guincho – kitesurf country with serious Atlantic crosswinds. Hold the wheel firmly and give cyclists wide clearance.
The clifftop lighthouse marks continental Europe's westernmost point. The car park fills by midday in summer; mornings are calm and golden. The short walk to the viewpoints is unfenced in places – mind the wind.
The N247 climbs into eucalyptus and granite. If you continue to Sintra town, remember its centre is tiny and congested – park low, walk up (see our Sintra guide).
About 40 km of driving – 1.5 hours nonstop, or a leisurely half-day with stops at Boca do Inferno, Guincho and Cabo da Roca.
No – the Marginal and the N247 coastal roads are free. Only the optional fast A5 return to Lisbon/Estoril is tolled.
No special skills needed – just respect the 30–50 km/h resort limits, the Guincho crosswinds and Sintra's narrow hairpins.
A free lot by the lighthouse – roomy in the morning, overflowing midday in summer. Arrive before 11:00 or after 17:00.
Yes, but Sintra deserves its own half-day – palace car parks are tiny. Many do the coast in the morning and Sintra after lunch, parking in the lower town.
Disclosure: Auto Jardim participates in the DiscoverCars affiliate program. We only recommend services we would use ourselves.
Last updated: June 2026. Roads and parking conditions change – check locally in peak season.
