Mulhouse to Silkeborg Road Trip: Best Stops & Guide

The A35 from Mulhouse to the German border near Basel is a surprising stretch: you'll pass within 2 km of the exact spot where the borders of France, Germany, and Switzerland meet at Dreiländereck. This road trip from Mulhouse (68,000 inhabitants, known for its car museum and textile history) to Silkeborg (44,000, Denmark's lake district capital) covers roughly 1,100 km, about 11 hours of pure driving, but plan for 3-4 days to do it justice.

You'll weave through the Rhine Valley, the Black Forest, across the European watershed, and into the flatlands of Denmark. The route follows the A35, A5, A7, then E45 through Germany, and finally the E45/E20 through Jutland. Expect a mix of autobahn highs, scenic secondary roads, and Danish two-lane highways.

You'll encounter three distinct toll regimes: France (between Mulhouse and Strasbourg, free but A35 is toll-free), Germany (all autobahns are toll-free for cars, but some tunnels and bridges like the Elbe Tunnel in Hamburg cost a few euros), and Denmark (no tolls for cars on highways, but the Storebælt Bridge from Funen to Zealand costs about €45). Yes, it's worth driving Mulhouse to Silkeborg if you want to experience this gradient of infrastructure.

• Fuel stations: In Germany, Autohof stations along the A5 and A7 are plentiful—every 30-50 km. In Denmark, stations become rarer on rural routes; fill up before leaving the major highways.
• Fuel efficiency: The Black Forest climbs (500-800 m elevation) can drop economy by 15-20%. Use cruise control on the flat northern German plains to maximize range.
• Best stops Mulhouse to Silkeborg: The A5 near Freiburg offers the Black Forest panorama; the A7 near Kassel has the Bergpark Wilhelmshöhe; the E45 near Kolding has the historic town center.

How long to drive Mulhouse to Silkeborg? Non-stop it's about 11 hours, but most drivers split it into two or three legs. Aim for an overnight near Frankfurt (3.5 hours from Mulhouse) and another near Hamburg (4.5 hours from Frankfurt) or near Flensburg (1.5 hours from Hamburg).

Road quality is excellent throughout: German autobahns are mostly concrete with good grip, Danish highways are asphalt with reflective markers. Speed limits: Germany sections up to 130 km/h (with many unrestricted sections, but respect the safe speed for conditions), Denmark 110-130 km/h. Toll gates: only the Storebælt Bridge has a toll booth (credit cards accepted). Night illumination: whole route has highway lights except some sections of the A7 between Kassel and Göttingen—use high beams.

• Family suitability: The Phantasialand theme park near Cologne (exit A1 from the A5) is a major draw. In southern Denmark, Legoland Billund is a 30-minute detour from the E45. Also, the Danfoss Universe science park near Kolding is perfect for kids.
• Pet-friendly framework: Most German Autohofs have fenced dog runs (freilauffläche). In Denmark, service areas like 'Motorvejsgårdene' (e.g., at Skærup) have designated pet areas. Remember to bring water and bowls; Danish summer temperatures can exceed 28°C.
• Fatigue management rest zones: The A7 has several recommended 'Parkplätze' with shaded benches: Tank & Rast at Allertal (km 135) and the 'Waldparkplatz' near Bad Fallingbostel (km 75). In Denmark, the rest area at Vejle Fjord (km 45) includes a café overlooking the fjord—safe parking for a 20-minute nap.

For safety, keep an emergency kit: warning triangle, high-vis vest (mandatory in France and Germany), and a first-aid kit. In winter (November to March), snow tires are mandatory in Germany if conditions require, and in Denmark they are recommended but not required for cars with summer tires if you have chains. The A7 through the Black Forest can be icy; watch for local winter maintenance signs. Always check roadworks on the A7 near Hamburg; delays of 30 minutes are common.

The geographical shift is dramatic: from the Vosges foothills and Rhine floodplains, through the Black Forest's dense spruce forests, across the central German uplands (the Mittelgebirge), into the North German Plain's endless farmlands, and finally Denmark's moraine hills and countless lakes. The views from the A5 near Baden-Baden (5 km stretch at 300 m elevation) overlook the Rhine graben.

• UNESCO World Heritage Sites: The route passes near or within 30-minute detours of three: the Bauhaus sites in Dessau (A9 exit, 45 min detour), the Wadden Sea (near the German-Danish border, but requires a 1-hour detour from the A7), and the Speicherstadt in Hamburg (directly on the A7 route).
• Local commerce: In the Black Forest, stop at a Bauernmarkt (farmers' market) for Schwarzwälder Schinken (dry-cured ham) and Kirschwasser (cherry brandy). In Denmark, roadside stalls sell flæskesteg (roast pork) sandwiches and fresh herring.
• Hidden off-route spots: Just 5 minutes off the A5 near Offenburg is the ruined castle of Schauenburg (free, panoramic views). Near the A7 at Göttingen, the town of Duderstadt has a medieval half-timbered center with no tourists—exit at Nörten-Hardenberg, drive 8 km east.

The culinary infrastructure ranges from Autobahnraststätten (service areas with McDonald's and local bakeries) to genuine Gasthäuser. For a memorable meal, exit the A5 at Freiburg-Mitte and walk into the Altstadt for Flammkuchen (Alsace's version of pizza). In Denmark, the E45 near Vejle has a roadhouse serving smørrebrød (open sandwiches) with organic ingredients. For more tips, read how to find the best stops and hidden gems between cities.