Snaking through the park (and providing access to many of the trailheads) is the stunningly scenic Sognefjellet Road, billed as 'the road over the roof of Norway'. It connects Lustrafjorden with Lom and was constructed in 1939 by unemployed youths to a height of 1434m, making it the highest mountain road in northern Europe and providing those with a vehicle a taste of some of Norway's finest mountain panoramas. So fine is the road that it has been chosen as one of 18 'National Tourist Routes'.

Access from the southwest is via the multiple hairpin bends climbing up beyond the tree line to Turtagrø, with a wonderful vista of the Skagastølstindane mountains on your right. If you're coming from Lom, the ascent is more gradual, following beautiful Bøverdalen, the valley of the Bøvra River, with its lakes, glacial rivers, grass-roofed huts and patches of pine forest. The road summit on Sognefjell offers superb views.

The snow sometimes doesn't melt until at least early July, although the road is usually open from May to September. Even so, at higher elevations visitors should prepare for new snow at any time of year. The road can get very narrow and snow is often piled metres-high on either side of the road. There are plenty of places to pull over and allow cars to pass (not to mention admire the spectacular view) and there are ample camping and other accommodation options lining the road.

Although this road is mainly traversed by motorised transport, the Sognefjellet Road also has legendary status among cyclists and frequently appears on a list of the world's most spectacular cycle routes. It's a serious undertaking that requires high levels of fitness and perfect brakes, but if you're a cyclist there are few finer roads in Norway.

From mid-June to late August, Ottadalen Billag Buses run between Otta and Sogndal via Sognefjellet Road.