Ulm to Krems an der Donau: A Scenic Road Trip Through the Danube Valley

The 450-kilometer journey from Ulm to Krems an der Donau traces the Danube's path as it exits the Swabian Alb and enters Austria's Wachau Valley. This route, largely along the B10 and B3 federal highways and the A1 autobahn, passes through three German states and two Austrian provinces. A lesser-known fact: the Danube narrows to just 80 meters near the Weltenburg Abbey, creating a dramatic gorge that contrasts with the broad, lazy river downstream.

For those wondering how long to drive Ulm to Krems an der Donau, plan for about 5 hours of pure driving time, but allow at least two days to absorb the landscapes. The question is it worth driving Ulm to Krems an der Donau is answered emphatically yes, as the route offers a microcosm of Danube history, from Roman settlements to medieval trade routes.

To uncover deeper layers, consider how to find the best stops and hidden gems between cities in this region.

The primary highway is the A3 from Ulm to Regensburg, then the A93 to Passau, and the A8 into Austria. Alternatively, the B16 and B3 offer a slower, scenic Danube-side route. Toll vignettes are required on Austrian motorways; purchase online or at border shops.

• Fuel: Frequent stations along A3, but sparse between Regensburg and Passau on B16. Fill up in Ulm or Regensburg.
• Road quality: German autobahn excellent; Austrian B3 narrow in sections with blind curves.
• Coordinates: Weltenburg Abbey (48.900, 11.820); Schlögener Schlinge (48.480, 13.880).

Fuel and Route Economics: Diesel averages €1.60/L in Germany, €1.55 in Austria. Toll for a car from Passau to Krems is €9.60 (vignette required for motorways, not for B3).

Natural Landscapes & Attractions: The Danube Gorge between Weltenburg and Kelheim is a top highlight. Take a ferry from Kelheim (€8, 25 min) through the narrows. Further down, the Schlögener Schlinge near Schlögen offers a near-180-degree river meander visible from viewpoints.

• Weltenburg Abbey: Oldest monastery brewery in the world (1042 AD). Try the dark beer.
• Donauleiten: A protected nature reserve with steep river banks and hiking trails.
• Nibelungen Bridge in Passau: Excellent photo spot of confluence of three rivers.

UNESCO World Heritage Sites: Regensburg's Altstadt (Old Town) is a UNESCO site with over 1,300 buildings spanning Romanesque to Gothic. In Austria, the Wachau Valley (Melk to Krems) is inscribed for its terraced vineyards and monastic landscapes.

Local Commerce & Culture: The Wachau is famous for apricot jam (Marillenmarmelade) and Grüner Veltliner wine. Visit the Spitzertal vineyard in Spitz an der Donau. In Grein, the City Theatre (built 1791) hosts summer performances.

Infrastructure Safety & Road Quality: German sections are well-maintained; Austrian B3 has sharp bends and narrow lanes. Use daytime running lights in Austria. Emergency phones every 2 km on A8.

• Speed limits: 100 km/h on B3, 130 km/h on autobahn.
• Winter: Snow chains may be required on B3 between Passau and Linz.

Fatigue Management & Rest Zones: Plan stops every 1.5 hours. Rest areas on A3: Hasenbuck (with playground), Donautal (with panoramic views). Off-highway: Café Central in Regensburg for a break.

• Best rest stop: Raststätte Donautal (A3 near Kelheim) – has a Danube lookout.

Family and Child Suitability: The Danube Gorge boat trip is a hit. The Fossil Museum in Bindlach (near Bayreuth) is slightly off route but worth it. In Linz, the Ars Electronica Center offers interactive tech exhibits.

• Playgrounds: Along B16, the Spielplatz in Bad Gögging.

Pet-Friendly Framework: Many outdoor restaurants along the route welcome dogs. The hotel Gästehaus Wagner in Spitz an der Donau offers pet-friendly rooms. Ferry to Weltenburg allows leashed dogs.

Hidden Off-Route Spots: The abandoned Roman fort of Boiotro near Passau (free access). The St. Laurentius chapel in Kasten (13th century frescoes). In the Mühlviertel region, the stone tombs of St. Thomas am Wagram.