From the center of Salzburg we follow the bike path on the western bank of the Salzach to the south - the Tauern bike path is also the Alpe Adria bike path. 300 meters after crossing the Hellbrunn road bridge, we stay on the paved road to the right and leave the original route for the first time. We cross the Alpenstraße and drive straight on the Fürstenweg to Hellbrunn (castle, water features, park), then left into Morzger Straße and further on Hellbrunnerstraße L201 past the zoo to Anif. At the large intersection, continue straight on the B159 to Niederalm and Taxach. At the roundabout turn towards Rif and across the Schlossallee to the Salzach and now again on the original route to Hallein - do not miss a stop in one of the ice cream shops in the middle of the historic old town B159 continue over the pass Lueg to Werfen, in the district Imlau but do not turn left to Pfarrwerfen, but continue straight on the B159 to the junction of the B99, here left and after approx. 800 m again left into the small commercial area, where we turn left reach the original route, which we follow along the Salzach to Bischofshofen. Here we stay on the main road (Molkereistraße) B159 to Mitterberghütten, but shortly afterwards turn left to Urreiting and reach St. Johann in Salzburg. Here we have to stay on the busy B311 until Schwarzach. At the crossroads in Schwarzach turn left over the Salzach and now again on the original route up to the reservoir and idyllically on the small road to the Gasthof Posauner, where we leave the Tauern cycle path. The Alpe Adria cycle path continues to the fork in the Gastein Valley, where you always follow the cycle path through the tunnels and via Dorfgastein to Bad Hofgastein in the center of the well-known health resort. Straight ahead to the roundabout and towards Bad Gastein, 500 m later turn left to Gadaunern and on the side street very nice to Badbruck. This is where the steep ascent into the historic center of Bad Gastein begins at the famous bridge over the Gastein waterfall. Continue on the original route up to the left over Waggerl-Straße and past the municipal office to the junction with the B167, here left and on this to Böckstein to the Tauernschleuse of the train. From the Salzburg side you can easily take the train (including a wheel wagon with around 50 Parking spaces) through the Tauern lock from Böckstein to Mallnitz. Train connections are guaranteed several times an hour depending on the time of day, cost for the bike ticket: 5 €. From Mallnitz it is a rapid descent via the B105 to Obervellach. From there, the cycle path (R8, Mölltalradweg) mostly runs parallel to the federal route and is perfect for racing cyclists. From Obergratschach to Mühldorf please take the federal road B106, as the cycle path leads briefly on unpaved ground. At Mühldorf, take the R8 cycle path again and follow it to Möllbrücke. From Möllbrücke take the side street of the expressway to Lendorf. This leads north of the expressway (B100) to Ledorf, in Lendorf on the R1 (Drauradweg, variant via Baldramsdorf south of the Drau). This variant leads through Spittal along the Drava Cycle Path wonderfully without much traffic. Follow the Drau Cycle Route east of Spittal to Molzbichl, leave the Drau Cycle Path (R1) in Molzbichl and take Landesstraße 37 via the villages of Ferndorf, Weissenstein, Puch to just before Villach. (The Drau Cycle Path leads in this section parallel to the L37, is also wonderful to ride on the racing bike, but partly gravel). At Unterwollanig under the Landesstrasse again on the Drau Cycle Path, which leads you to the center of Villach. From there, follow the R1 to the red bridge (Friedensbrücke, 4 km from the city center, Ri east), then take the R3 cycle path Ri Tarvis over this red bridge. Follow the R3 until Müllnern (from Müllnern the R3 is not asphalted for some KM to Riegersdorf but is very smooth gravel), from Müllnern take the Gödersdorfer Strasse to Gödersdorf and the B85 to Fürnitz. In Fürnitz again on the brand new Ri Tarvis cycle path. This cycle path leads asphalted to the border or meets the Alpe Adria cycle path just before Tarvisio. Follow this road south through Tarvisio until you reach Resiutta. By then the Alpe Adria cycle path on the old railway line has been built. Resiutta to Venzone take the SS13 federal road, in Venzone (at the station) take the newly built section of the Alpe Adria cycle path to Gemona. From Gemona the fastest route leads via SS13 and Tricesimo directly to the center of Udine.
A trip to Udine is always worthwhile culturally and culinary. If you want to avoid Udine, take the side streets west of Udine via the towns of Majano, Fagagna, Martignacco, Colloredo di Prato and Pasian die Prato. There you meet again on the conventional route that leads through the city center of Udine. At least as beautiful is the eastern side past Udine via the towns of Tricesimo, Ribis, Beivars, San Gottardo and further to the southern end of Udine.
All 3 routes through and past Udine then lead to Butrio, from where you follow the (partly not good) signposted route Ri south. The next places to visit are Pavia di Udine, Santa Maria la Longa and especially Palmanova.
The Alpe Adria cycle path leads directly from Palmanova or Cervignano into the Grado lagoon.