Here are a few suggestions for your next trip from Letnica(BG)
In 2 hours, you can reach Chavdarci, Asenovci, Levski, Aleksandrovo(BG), Umarevci, Joglav, Dojrenci, Drasov, Kamenec(BG).
In 3 hours, you can reach Lovech, Troyan, Kazachevo, Hlevene, Ablanica, Leshnica, Lomec, Dobrodan.
Prenota - Trainline
Prenota - SNCF Connect
Prenota - Deutsche Bahn