From Lohr, it heads west through the Spessart. From Lohr station (200 metres above sea level), the line climbed steadily for 20 kilometres to Heigenbrücken (275 m ASL) until 2017. Immediately west of Heigenbrücken station, it passed through the 926 metre-long almost horizontal Schwarzkopf Tunnel. At the western end of the tunnel at Hofgut Wendelstein was the highest point of the line and the Heigenbrücken West operations yard, where pusher locomotives were detached and returned to Laufach. As far as Laufach station (175 m ASL), the line ran over the Spessart Ramp, the trains on the 5.2 kilometre-long route overcame a height difference of 100 metres, corresponding to an average slope of 1.9%. In fact, this varied between 1.54 and 2.17%. Most of the section from Lohr to Laufach is now bypassed by a new line with four tunnels. Shortly before the halt of Hösbach the line crosses the A 3.