CIMA PR09: Alto do Trevim - Lousã

This challenging racebike route, covering approximately 53.9 km with over 1400 meters of elevation gain, typically takes around 3 hours and 20 minutes to complete for an experienced cyclist. However, your actual time may vary depending on your fitness level and how often you stop to enjoy the views.

The climb from Lousã to Alto do Trevim is considered a difficult, Category 1 ascent, making it an 'Epic Climb' for road cyclists. It features a substantial vertical gain of nearly 1200 meters over 25-26 km, with an average gradient of 4-4.7%. Be prepared for steeper sections, especially in the final 2 kilometers, where inclines can reach 6-7.9%, with some passages as steep as 10-11%.

The route typically starts in Lousã. While specific trailhead parking isn't detailed, Lousã is a town with various parking options. It's advisable to check local parking availability in Lousã before your ride.

Lousã is accessible by public transport, primarily buses, from larger cities in Portugal. However, transporting a road bike on public transport can sometimes be challenging, so it's best to check with the specific bus operators regarding their policies for bicycles.

The route follows the N236 road, which can have worn surfaces in places due to harsh winters. As you ascend through the Serra da Lousã, the vegetation becomes scarcer, exposing riders to wind, particularly near the summit. The road is paved, but its condition requires attention, especially on descents.

The route offers stunning scenery throughout. Key highlights include the charming settlement of Candal. The summit, Alto do Trevim, provides spectacular panoramic views, and the Tarrasteira Viewpoint is another excellent spot. Don't miss the popular 'Baloiço do Trevim' (Trevim Swing) at the summit for a unique photo opportunity with breathtaking backdrops.

The best time to cycle this route is generally during the spring (April-June) and early autumn (September-October) when temperatures are milder and the weather is more stable. Summer can be very hot, and winter may bring harsh conditions, including worn road surfaces and strong winds at higher elevations.

As this is primarily a road cycling route, dogs are generally not restricted on public roads. However, if you plan to stop at any specific points of interest or natural parks, it's always best to check local regulations regarding pets. Always ensure your dog is safe and does not interfere with traffic if you bring them along.

No, there are no specific permits or entrance fees required for cycling the CIMA PR09 route or generally within the Serra da Lousã. It's a public road, and access is free. However, always respect local regulations and private property.

Yes, while the CIMA PR09: Alto do Trevim * Lousa route covers the majority of this tour, sections of the route also intersect with or run alongside other trails such as Rota da Levada, Rota das Aldeias do Xisto da Lousã, and Rota do Trevim.

Beyond the significant physical challenge, the Alto do Trevim climb offers immense rewards. It's considered one of the classic 'Epic Climbs' of Central Portugal, leading to one of the highest points in the Serra da Lousã. The panoramic 360-degree views from the summit, stretching to the Serra da Estrela, the Atlantic Ocean, and even Marvão, make the demanding ascent truly worthwhile.