Ofenpass is a high mountain pass at an elevation of 2.149m (7,051ft) above the sea level, located in the most eastern corner of Switzerland, in the canton of Graubünden.
The pass is known with several names: Fuorn Pass, Ofen Pass, Ofenpass, Passo del Forno, Passo del Fuorn... The name is based on the ovens that were used in ironworks in the area. The ruins of these ovens can still be seen from nearby trails. The asphalted road over the pass connects Zernez in the Engadin valley with Val Müstair, crossing the Schweizerischer Nationalpark, the only Swiss National Park.
There are 2 routes to reach the summit. Starting from Zernez, the ascent is 21.6 km long. Over this distance, the elevation gain is 676 meters. The average percentage is 3.1 %. Starting from Glorenza, the ascent is 28 km long. Over this distance, the elevation gain is 1.229 meters. The average percentage is 4.4 %.
The road is difficult and it’s a nightmare in the wet or dark (or both). The traffic is somewhat moderate even though it should be an obvious through route, but heavy lorry traffic probably much prefer the Reschenpass/Passo di Rèsia/Pass dal Raisch.
This road is usually open all year, but it can be closed anytime when the access is not cleared of snow. Remember to strictly follow the speed limits. The local police is often hidden behind houses with a radar gun and Swiss tickets are damned expensive.