Trogir to Ulm Road Trip: Ultimate Guide

The first recorded Roman road connecting Dalmatia to the Danube region was the Via Militaris, parts of which run eerily close to today’s A1 and A9 motorways. Driving from Trogir, a UNESCO-listed town on the Adriatic founded by Greek colonists in the 3rd century BC, to Ulm, home of the world’s tallest church steeple, means tracing 1,100 kilometers of layered histories.

This guide covers everything from the best stops Trogir to Ulm to how long to drive Trogir to Ulm, answering is it worth driving Trogir to Ulm, and listing things to do between Trogir and Ulm. Expect practical advice on fuel, roads, climate, and off-route treasures.

Infrastructure Safety and Road Quality

Croatian A1 is modern with a 130 km/h speed limit; Austrian A9 in the Alps has steep gradients (up to 12%) and sharp curves near Schoberpass. Use low gear downhill to avoid brake fading. Night illumination is good full length except in Slovenia where some stretches are dark. Always carry a reflective vest and warning triangle (mandatory in all countries). Toll gates in Croatia require cash or credit; Austrian vignette must be displayed on windshield.

• Police presence: Frequent speed cameras on Croatian A1, especially near tunnels. Austria uses section control on A9.
• Emergency numbers: 112 (EU), 128 (Croatia highway patrol), 122 (police).
• Parking: Rest stops every 50 km; some have fenced dog areas.

Family and Child Suitability

• Exit 6 (Plitvice): National park with easy trails and boat rides; kid-friendly (ages 5+).
• Zagreb: Maksimir Park (free-roaming deer) and technical museum.
• Graz: Murinsel (floating island playground) and the Schlossberg slide (170-meter tunnel slide).
• Ulm: The Einstein Museum in the Ulmer Stadthaus interactive exhibits.

Pet-Friendly Framework

Most Croatian rest stops allow dogs on leash. Near Zagreb (service station Desinec) has a small fenced toilet area. In Austria, Raststation Rottenmann offers a dedicated dog run. Pet-friendly cafes include Caffe Bar Plitvice (outside the park) and Café Central in Graz (dogs allowed on terrace). In Ulm, the Stadtgarten allows off-leash in designated hours.

Hidden Off-Route Spots

• Knin Fortress (5 min south of A1 exit 3): Abandoned medieval fortress with panoramic views. Free entry.
• Slunj’s Rastoke village (near Plitvice exit): Watermills on the river Slunjčica, often called ‘Little Plitvice’ – no tourists.
• Hrušica (A2 exit 6, Slovenia): Roman settlement ruins with a 4th-century road base.

Fatigue Management and Rest Zones

For a safe nap: use Croatian rest stop ‘Sveti Rok’ (A1 exit 5) on the northbound side – shaded, quiet. In Austria, Raststation Pichling (A9 near Graz) has a 24h gas station with couches. If exhausted near Ulm, pull into the Autobahnkapelle (highway chapel) at Merklingen – a peaceful spot with benches.

To explore more off-route treasures, check out how to find the best stops and hidden gems between cities.

The backbone of the journey is the A1 motorway through Croatia, then the A2 into Slovenia, followed by the A9 through Austria to Germany. Toll systems vary: Croatia uses an electronic vignette or ticket system (toll plazas every 70-100 km). Austria requires a purchased vignette (stickers for 10 days cost €9.90 for cars). Slovenia uses an electronic vignette (7 days for €7.50). Germany has no toll for cars, but some tunnels require extra fees.

Gas stations are plentiful along the A1 and A9, but fuel costs differ dramatically. In Croatia, diesel averages €1.50/liter, in Austria €1.30, and in Germany €1.45. Use the Croatian motorway service stations (Ivanic Grad, Desinec) for cheaper fuel before crossing into Slovenia.

• Estimated total fuel cost for a medium car: €110–€130 (7.5L/100km, 1,100 km).
• Fuel efficiency tip: Keep speed around 130 km/h on flats, 100 km/h uphill in the Austrian Alps to save 15% fuel.
• Fuel station distribution: Every 30–50 km on motorways; in Slovenia and Austria, most are open 24h.

Key Road Names and Milestones

• Trogir → Split (E65) → A1 north to Zagreb (exit 1-3).
• Zagreb → A2 (E59) via Macelj border to Maribor.
• Maribor → A9 (E57) through Graz, Liezen, Salzburg, Munich, then A8 to Ulm.
• Exact coordinate: 12.3° E, 48.4° N is the Ulm Cathedral tower.

Geographical Shifts

The drive crosses four distinct zones: the karst Dalmatian coast (olive groves, limestone), the Dinaric Alps (dense forests, rivers), the Pannonian Basin (flat farmland, sunflower fields), and the Alpine foothills (green meadows, dairy pastures). The transition from Mediterranean maquis to Central European beech forests is stunning near the Croatian-Slovenian border.

• Between Trogir and Knin: Red soil and scrubby oaks. Look for kestrels hunting.
• Around Slunj (A1 exit 6): Plitvice Lakes National Park (UNESCO) – a 10-minute detour. Turquoise lakes and 16 cascading waterfalls.
• Near the Slovenian border (A2): Kozjansko Regional Park – rolling hills dotted with wooden churches.
• Into Austria: The Ybbstal Alps provide dramatic gorges (Nothart Höhe). Stop at Liezen to see the Enns River canyon.

UNESCO World Heritage Sites Along the Route

• Plitvice Lakes National Park (Croatia) – direct detour from A1 exit 6, about 15 minutes off route.
• Historic City of Trogir (start point).
• Old Bridge Area of Mostar (Bosnia, 2h detour – not recommended for this trip).
• Palace of Diocletian in Split (10 min from Trogir).
• Graz Historic Centre (Austria) – directly on A9, exit 183. A 2-hour stop is enough to see the clock tower.
• Ulm Cathedral (the highest church spire in the world, 161.5 m).

Local Commerce: Regional Specialties

Stop at roadside stalls near Maribor (Slovenia) for pumpkin seed oil (€5–8 per bottle). In Croatia, buy Pag cheese (sheep’s milk) or olive oil from the Velebit region. Near Graz, purchase Kernöl (pumpkin seed oil) at any farm stall. In Ulm, the local beer (Ulmer Münster Bier) is a must.