Jungfrau-Marathon Route

This route is considered extremely challenging for touring cyclists. It features a substantial elevation gain of 1,953 meters (6,407 feet) from Interlaken to the Eigergletscher finish, with an average gradient of 4.1%. Be prepared for prolonged and strenuous ascents, especially in the latter half, with sections climbing 450 meters in just 5 kilometers.

The route offers a mixed surface, including road, gravel road, and trail sections. While the first 10 kilometers are relatively flat, the difficulty quickly escalates with steady climbs, particularly steep sections after Lauterbrunnen, and a gravel road leading to Wengen. The final 6 miles to Eigergletscher involve an arduous upward climb.

The route is renowned for its breathtaking scenery. You'll experience lakeside views near Brienz, traditional mountain villages, and the iconic Alpine trio of peaks: the Eiger, Mönch, and Jungfrau. The Lauterbrunnen Valley, with its dramatic waterfalls like Staubbach Falls, is particularly striking. Higher up, enjoy views of the Jungfrau and Mönch from Wengen, and the famed North Face of the Eiger near the finish at Eigergletscher.

The route typically starts in Interlaken, at an altitude of 565 meters. Specific parking information for cyclists at the start is not detailed, but Interlaken is a well-connected town, and public parking options are generally available. Consider public transport for easier access.

Interlaken, the starting point, is easily accessible by train. From there, you can begin your cycling journey. The route also passes through Lauterbrunnen and Wengen, which are served by mountain railways, offering options for accessing different sections or for return journeys.

The best time to cycle this route is typically during the warmer months, from late spring to early autumn (June to September), when the mountain passes are clear of snow and weather conditions are more stable. Fluctuating mountain weather can add to the challenge outside of these months.

Yes, along the route, you'll encounter several points of interest. These include the impressive Staubbach Falls, the charming village of Lauterbrunnen, and the Wooden bridge and old village quarter. For refreshments, the Trachsellauenen Mountain Restaurant is a notable stop.

While the route itself is a public path, specific regulations for dogs on cycling routes in the Jungfrau region can vary. If cycling with a dog, ensure it is well-trained and capable of handling the strenuous terrain. Always keep dogs on a leash, especially in populated areas or near livestock, and be mindful of other trail users.

Generally, there are no specific permits or entrance fees required to cycle the Jungfrau-Marathon Route itself, as it primarily uses public roads and trails. However, if you plan to use any mountain railways or visit specific attractions along the way, those may have associated costs.

Given the route's difficulty, especially the steep ascents after Lauterbrunnen and the final climb to Eigergletscher, pacing yourself is crucial. Consider starting early to avoid afternoon heat and potential weather changes. Ensure your touring bicycle is in excellent condition and suitable for significant elevation gains. Carrying sufficient water and snacks is also highly recommended.

Yes, the route overlaps with sections of other official trails. Notably, it covers a significant portion of the Jungfrau-Marathon trail itself (59%) and also intersects with parts of the Alpine Bike - Etappe 12 (39%) and Mürren Bike (39%) routes.