After landing at Strasbourg Airport at 15:10, allow roughly an hour for baggage, car collection and the rental paperwork. Pick up the car and take the A35 across the Rhine, then continue via Offenburg toward Gengenbach; the drive is usually 45–55 minutes, though the border crossing and late-afternoon traffic can add time. Park at your accommodation if possible, or use one of the signed car parks just outside the historic centre—driving into the old town itself is restricted and the lanes are far too tight to be useful with luggage.
Spend the remaining daylight wandering Gengenbach Old Town, one of the Black Forest’s prettiest small centres, with colourful half-timbered houses, cobbled lanes and quiet squares that are especially atmospheric as shops begin to close. Walk first to Obertor Tower, the western gateway and one of the town’s best-known landmarks; if the tower interior is open, the small exhibition and upper viewpoint are worth the modest entry fee, generally only a few euros. Continue east through the old streets to Kinzigtorturm, another handsome medieval gate tower at the edge of the centre. Tower access can be seasonal and opening times vary, so treat the exterior architecture and evening stroll as the reliable part of the plan.
Have dinner at Gasthaus Zum Turm, conveniently placed in Gengenbach Old Town and a good introduction to Baden cooking. Expect approximately €25–40 per person for a main course and drinks; vegetarian choices are usually available, but ask what is freshly prepared rather than assuming the menu’s side dishes will make a complete meal. Reserve ahead if possible, particularly for a Thursday evening, and mention your vegetarian requirements when booking. After dinner, take one final lap around the softly lit lanes before returning to your accommodation—everything in the centre is walkable, and there is no need to move the car again.
Leave Gengenbach around 08:30 for Hohengeroldseck Castle, allowing roughly 35–40 minutes by car via B33 and B415 toward Seelbach. Park at the signed castle car park below the hill; the final approach is on foot and can be steep, so wear proper hiking shoes. Allow about 1½ hours to explore the atmospheric ruins and climb the tower for wide views across the Kinzig valley. Entry is generally free, though conditions and access can vary, and the site is exposed in poor weather.
Continue north toward Oppenau—about 45 minutes—and park for the Lierbach Waterfalls walk. Set aside around two hours for the woodland trail beside the cascades; sections are uneven, with roots, steps and slippery rock, so avoid rushing after rain. Bring water and a snack, as facilities are limited near the trail. From here, drive a few minutes uphill to Allerheiligen Abbey Ruins, where 45 minutes is enough to see the Gothic remains and walk through the quiet forest setting. For lunch, a packed picnic is the safest option; cafés around the waterfall and abbey can have limited late-season hours.
After lunch, drive approximately 25 minutes along the winding Schwarzwaldhochstraße to the Black Forest National Park Ruhestein Centre. Spend an hour or so in the exhibition, then take the short signed viewpoint walk for a sense of the high, protected plateau—bring a jacket, as Ruhestein is noticeably cooler and windier than the valleys. Check the centre’s September opening hours before setting out, as visitor facilities may close in the late afternoon. Finish at Berggasthaus Zur Blume, reached by a scenic drive back toward Oppenau, for an early dinner around 18:00; allow €20–35 per person and confirm the kitchen’s hours, requesting a vegetarian dish when booking.
After dinner, allow roughly an hour back to Gengenbach, with extra time for narrow, twisting roads and reduced visibility after dusk. Fill the car before leaving the main roads if the tank is low, and download the route in advance because mobile coverage can be patchy in the valleys.
Leave Gengenbach around 08:30 and follow the scenic B33 through Hornberg to Triberg. The drive takes about an hour, with increasingly wooded valleys and good viewpoints along the way. In Triberg, use the main paid car parks near the waterfall entrance or the town centre; spaces fill quickly on weekends, so arriving before 09:30 is worthwhile. Allow roughly two hours for Triberg Waterfalls. The signed paths are steep and can be wet underfoot, especially near the lower cascades, so wear proper walking shoes. The waterfall complex usually opens from around 09:00, with admission commonly around €8–10; take the upper paths for a quieter, more forested feel.
Walk downhill into Triberg centre for the Black Forest Museum, a compact but atmospheric introduction to regional life. Give yourself about an hour to see the clocks, woodcarving, musical instruments, traditional costumes and displays on mining and farming. Opening times vary by season, but it is generally open from late morning through the afternoon; check the museum’s website that morning, as September hours can be shorter. From the waterfall area, it is an easy 10–15-minute walk, though the return route climbs slightly.
Drive roughly 20 minutes back along the B33 to Hornberg Castle, where the hilltop ruins offer broad views over the Gutach valley. The site is usually freely accessible during daylight, although some sections may be closed for safety or restoration; allow about an hour and bring water, as the final approach is uphill. Continue approximately 10 minutes by car to the Vogtsbauernhof Black Forest Open-Air Museum in Gutach. Set aside two hours to wander among the original farmhouses, mills, barns and vegetable gardens, and look inside the furnished interiors to see how different Black Forest communities lived. It normally operates until around 18:00 in the main season, with admission roughly €12–14; arriving by mid-afternoon gives you enough time without rushing.
Return to Triberg for coffee and Black Forest cake at Café Adler, a traditional stop in the centre. Vegetarian cakes and light savoury choices are available, though dinner options are limited, so treat this as a relaxed afternoon-to-evening meal rather than a full restaurant booking; expect about €10–20 per person. September evenings become cool quickly, so a short stroll through the illuminated town centre is pleasant before heading back to your accommodation. Check the café’s closing time in advance—many local businesses finish service around 18:00 or 19:00 outside peak summer.
Leave Triberg around 08:30 for Freiburg im Breisgau, allowing about 1 hour 15 minutes via the B33 and A5. Use a central garage such as Schlossberggarage or Karlsbaugarage; both put you within an easy walk of the historic centre. Start at Freiburg Minster on Münsterplatz, where the red sandstone cathedral and surrounding market square are at their liveliest in the morning. The minster is generally open from around 10:00, though worship services can affect access; admission to the main church is usually free, with a small charge for the tower when open. From here, wander through the lanes toward Schwabentor, following Freiburg’s open drainage channels—the Bächle—and looking out for the small courtyards and painted façades around Konviktstraße.
Continue through Freiburg Old Town without rushing; from Schwabentor, Augustinerplatz and the brewery are only a few minutes away on foot. Have lunch at Hausbrauerei Feierling, a relaxed local brewery where vegetarian dishes are usually more substantial than a token salad—look for options such as cheese-based dishes, salads, vegetable plates or seasonal specials. Allow roughly €20–35 per person, and expect the restaurant to be busy around noon, so arriving slightly before 12:30 is useful. After lunch, take a final unhurried stroll along Gerberau and the nearby canals before returning to the car; allow around 15–20 minutes from the old town to the garage.
Drive north to Baden-Baden via the A5, then follow signs for the centre and the Caracalla Spa; the journey from Freiburg is usually about 1 hour, with traffic potentially adding time. The spa’s thermal bathing area is generally open into the evening, but check the September 2026 timetable and reservation rules before travelling. Allow around three hours for the warm indoor and outdoor pools, steam rooms and relaxation areas. Swimwear is required in the bathing areas; sauna access may follow different clothing rules, so bring a towel and robe or check the current policy when booking. Afterward, walk or take a short taxi ride into central Baden-Baden for dinner at Hectors Restaurant, a polished but comfortable choice with vegetarian dishes available—confirm the current menu when booking. Budget approximately €30–50 per person, and reserve ahead for a Sunday evening, particularly if you want to eat soon after leaving the spa.
Have breakfast near your accommodation, then leave Baden-Baden around 09:15–09:30. The drive to Karlsruhe/Baden-Baden Airport (FKB) usually takes 20–30 minutes via the A5, but allow extra time for Sunday traffic, refuelling and returning the hire car. Follow the signs for the rental-car return area rather than the terminal first; the return procedure is generally straightforward, though it is worth photographing the car and fuel gauge before handing over the keys.
Aim to arrive at the airport by about 10:00–10:15 for your 12:25 flight. FKB is a small, manageable airport, but rental-car returns and security can still take time, especially if several flights depart close together. Keep your passport, boarding details and any rental documentation accessible, and check the airline’s baggage-drop opening time before leaving Baden-Baden.