There currently is one option to travel by night train from Hamburg to Freiburg im Breisgau, taking approximately 9 hours: Namely the NJ 471 operated by ÖBB.
The Austrian Federal Railways (ÖBB) operate the Nightjet and Euronight trains (the latter together with other national railway agencies). ÖBB night trains typically feature three types of carriages: seats, couchettes, and sleepers. While seats are only for the bravest, couchettes and sleepers offer a more comfortable journey. Couchettes can hold up to six people, whereas sleepers are private compartments for one to three people. They may include a private bathroom or shower, or sometimes just a sink.
For the next 7 dates with connections, the cheapest offer starts at 70 EUR. Check our connection pages below for all availabilities!