The 8 Best Cycling Routes in Sardinia: Ride Notes From the Island

Difficulty here means sustained effort and terrain, not just distance; a flat 45 km day and a hilly 30 km day can feel completely different by the finish.

The three easiest routes on this table, Poetto and Molentargius, Sinis, and the flatter stretches of the SP17, are entirely fine on a basic rental bike. The three hardest, the SP105, Cala Gonone and the Costa Verde, reward either strong fitness or an e-bike.

The SP105 coast road between Alghero and Bosa is the ride most visitors ask about before they ask about anything else, and for good reason. It runs about 45 km one-way along cliffs that drop straight into the sea, climbing repeatedly to somewhere between 300 and 400 m above the water rather than one single pass, so the effort adds up in doses rather than all at once. Riders who turn it into a loop rather than an out-and-back typically add the inland leg through Villanova Monteleone, pushing the total closer to 68 km and 1,400 m of cumulative climbing.

What makes the SP105 more than just a scenic drive on two wheels is what lives on the cliffs themselves. The stretch between Bosa and Alghero holds Sardinia's only breeding colony of griffon vultures, roughly 120 territorial pairs split between the Bosa side and a smaller group near Alghero, according to the most recent Vulture Conservation Foundation census. It is one of the few places in Italy where you can watch a bird with a nearly three-metre wingspan ride the same thermals you are fighting against on the climbs.

Italia.it lists the road among its official coastal cycling routes, and it shows: the surface is good, the traffic is light outside August, and there is nowhere on the island with a longer, cleaner run of sea on one side of the handlebars. Most riders return the way they came rather than looping inland, since the coast road is the whole point of the ride.

The SP17 out of Cagliari toward Villasimius is the road cyclist's route, the one that has actually hosted professional racing: the Giro d'Italia used this coast in both 2007 and 2017, and the reason becomes obvious once you're on it. The route runs through Torre delle Stelle and Solanas, about 45 km from Cagliari to Villasimius, and after Solanas the road climbs to roughly 159 m past the Torre di Capo Boi watchtower, the one sustained effort on an otherwise rolling coastal profile.

Solanas sits about 7 km from Torre delle Stelle, with Villasimius a further 18 km on, so the route breaks naturally into three legs if you want to split it with a coffee stop or a swim. The tarmac is good throughout and the views over the Golfo di Carbonara rank with anything on the island, without the crowds the SP105 picks up on a summer afternoon.

This is the route to choose if you want to feel like you are riding a real stage rather than a tourist loop. It rewards a road bike over a hybrid, and riders who want the climb without the crowds tend to start early, before the beach traffic from Cagliari builds through Torre delle Stelle.

This is where most people in Cagliari actually ride, and where I send anyone who wants their first pedal stroke in Sardinia to be an easy one. A dedicated cycle path runs the length of Poetto beach, roughly 8 km of flat, car-free tarmac with the sea on one side the whole way, and it connects directly into the Molentargius-Saline Regional Natural Park, one of Europe's most important wetlands and home to flamingos year-round. Entry to Molentargius is free and the park is open from dawn to dusk, no ticket, no booking.

There is no climbing to speak of and no technical riding, which makes this the loop for a first evening in the city, a rest day between harder rides, or a family outing with kids on rented hybrids. It is also the terrain of two of the guided tours on this site, the flamingo oasis bike tour and the bike and hike route that adds a walk up to the Sella del Diavolo at the end. Bars along Poetto close for the afternoon like everywhere else on the island, so carry water if you are riding through midday.

The east coast around Cala Gonone is the wildest riding on this list and the one route I would not attempt without an e-bike or a genuinely strong set of legs. Day rides here run 45 to 70 km across the limestone Supramonte plateau, a mix of paved lanes and gravel tracks that climbs steadily into terrain with almost no traffic and almost no shade. The full-day guided e-bike tour covers this ground on Fantic XTF 1.5 Race e-bikes, with a stop at the Nuraghe Mannu archaeological site above the Gulf of Orosei along the way. Our full review of the Cala Gonone e-bike day covers what a day like this actually feels like, mile by mile.

What makes the Supramonte worth the effort is the contrast: limestone cliffs and karst plateau one hour, hilltop Dorgali and its vineyards and olive groves the next, then a final descent to a swim at Cala Cartoe or Cala Fuili to finish. It is not a route to freestyle on a rented hybrid with no support, the gravel sections and the distance from any town punish a mechanical problem more than anywhere else on this list. This is the one route on this page where I would tell most riders, guided beats solo, not out of caution for its own sake but because the terrain genuinely rewards local knowledge of which trail actually leads back to the coast.

Castelsardo, a walled town on the north coast, is the start point for a 30 km loop that climbs 700 m to the summit of Monte Ossoni, where the road opens onto a 360-degree view over the Gulf of Asinara. The panoramic e-bike tour rides this loop with pedal assist doing most of the work on the steeper sections, past the Roccia dell'Elefante, a wind-carved rock formation that has been a local landmark for centuries, and out onto quiet paved and dirt roads that see almost no traffic outside the town itself. The full write-up of the Castelsardo e-bike tour has the complete inclusions list and photos from the ride.

Unguided, this is a genuinely rideable loop for anyone comfortable on a gravel or hybrid bike with real gears, the 700 m of gain is spread across the whole 30 km rather than concentrated on one wall of a climb. What a guide adds here is mostly the summit-day judgment call, whether the wind on top is worth the last push or better saved for a calmer morning, and a tyre repair kit if the dirt sections find a sharp stone.

West of Oristano, the Sinis Peninsula trades cliffs for lagoons and dune-backed beaches, flat to rolling terrain that works for families and for anyone who rode the SP105 the day before and wants their legs back. The loop through San Giovanni di Sinis passes the Tharros ruins, a Phoenician and Roman site sitting right on the coast, easy to combine with a swim stop since the whole peninsula sits so close to the water.

The one thing to plan around here is wind. Sinis sits fully exposed on Sardinia's west coast, in the direct path of the maestrale, and on a strong-wind day the peninsula's flat, open ground offers nowhere to hide from it the way a tree-lined inland road would. Check the forecast the morning of, not the night before, and be ready to swap this ride for a sheltered east-coast route if the wind is already up by breakfast.

The Costa Verde, southwest of Cagliari, is the route for riders who have already done the postcard roads and want something rougher. This is a former mining coast, remote and largely unserviced, with rough and sometimes gravel sections that see very little traffic of any kind. The Piscinas dunes, among the tallest sand dunes in Europe, rise directly off the road partway along, an odd and genuinely striking sight on a Mediterranean island.

I would not send a first-time visitor here without local knowledge of which tracks actually connect and which dead-end at a mine shaft or a locked gate. Bring more water than you think you need, there is nowhere reliable to refill between towns, and treat this as a route for confident, self-sufficient riders rather than a casual afternoon out.

Sardinia's interior climbs to Punta La Marmora, at 1,834 m the highest point on the island, and the roads through the Gennargentu massif and the Barbagia region around it are the closest thing here to genuine mountain cycling. Stone villages dot the climbs, Fonni among them, Sardinia's highest village at around 1,000 m, and the air stays noticeably cooler than the coast even in the middle of August, which makes this the interior's best answer to a heat wave.

These are long climbs by Sardinian standards, and the reward is a kind of riding that has nothing to do with the beach at all: pine forest, granite outcrops, and villages that still run on a slower, more local rhythm than the coast. It is not a route for a first day on the island, but for anyone spending a week or more, it is worth one full day away from the sea.

Three of the eight routes above, Poetto and Molentargius, Cala Gonone and the Supramonte, and Castelsardo and Monte Ossoni, are also run as guided bike day tours in Sardinia, with a bike, a guide and a support plan built in. The other five, the SP105, the SP17, Sinis, Costa Verde and the Gennargentu, are entirely open to anyone on a rented or private bike, no permit or booking required.

Whether that is the right call depends more on the specific route than on any general rule. The flat city loop and the Castelsardo circuit are genuinely fine to ride alone on a rented hybrid or gravel bike, well-marked and forgiving of a wrong turn. The Supramonte and the Costa Verde are a different proposition, remote, mixed-surface and unforgiving of a flat tyre with no support vehicle behind you. Our full breakdown of renting, rules and real costs walks through exactly what solo riding looks like on each type of terrain, including what a day actually costs once you add up the bike, the delivery fee and the water you will need.

Bike choice follows the surface more than the distance. This is the shortest version of what to hire for each of the eight.

Every route on this page rides best in the same two windows, April through June and September into October, when temperatures sit in the low-to-mid twenties and the worst of the maestrale has usually eased. Ride the exposed west-coast roads, the SP105, Sinis and the Costa Verde, on calmer days and save the sheltered Poetto loop or the inland Gennargentu climbs for whenever the wind picks up. Our full month-by-month guide covers the temperature, rainfall and crowd pattern behind that recommendation in detail.