Hi, everyone
I would like to correct
@lovingkindness mistake in her first post that Tolmin is in Italy. It's still in Slovenia although Italy wouldn't mind getting it
But to answer the OP.
@caminka already mentioned two branches of Slovenian St.James Way (from Croatian and Hungarian border) that merges in Slovenian capital Ljubljana. From there it goes to Trieste. The one that goes north to Višarje/Monte Lussari is actually St.Mary's Way.
Juliana Trail is newly marked trail that circles the Triglav National Park and doesn't enter it so you can start wherever you want on that loop.. BTW Triglav is the highest peak in Slovenian Julian Alps with 2864mts a.s.l. What I know about it is that it is much easier than St.James Way. It doesn't really climb any serious mountains and is largely combined with cultural and culinary experience. Overnight stays are more or less limited to hotel, pensions and private rooms, no real mountain huts. Helpful link in English:
The stage 1 leads you along the Sava Dolinka Valley and partially on the edges of the Karavanke mountain range, and ...
julian-alps.com
If you like mountaineerin over hiking than it's worth looking at two other marked trails in/through Slovenia:
1.) Slovenian Mountain Trail is the oldest completely marked trail in the world! It starts (or ends if you go in other direction) very close to Hungarian border and ends just a couple of kilometres from Trieste right by the Adriatic Sea. I walked more or less all of it over years and I would say it could be divided into three sections regarding how demanding the walk is.
- First part from Selo (close to Hungary) and along the Pohorje ridge to the Kamniško-Savinjske Alps could be taged by hiking.
- The second part through Kamniško-Savinjske Alps, Karavanke and Julian Alps is real mountaineering (and that's the part
@lovingkindness experienced). Here you can more or less only sleep in mountain huts. On many sections it's advisable to wear the helmet. Also there could be patches of snow all through the year.
- The third part to Ankaran can also be descibed as hiking and you can also sleep in some hostels and other private accommmodation.
2,) Alpe-Adria Trail starts in Austria, goes through Slovenia near the Soča River (Italian Isonzo, Hemingway wrote about it in A Farewell to Arms although he never really got there, he was in hospital in Milan) and ends in Trieste. This trail is on many sections as demanding as the middle part of Slovenian Mountain Trail but nearing the end it gets easier and easier.
Info for both available in English on-line.
Happy planning