|Length:||124 km (77 mi)|
|States:||Lower Saxony, Saxony-Anhalt|
The B 242, also known as the Harz High Road (Harzhochstraße), runs right across the Harz mountains in central Germany. From Seesen on the northwestern edge of the Harz near the A 7 motorway it runs through the Upper Harz past Clausthal-Zellerfeld, the High Harz, where it is combined for several kilometres with the B 4, past Braunlage and then through the eastern Harz foothills into Mansfelder Land. There it joins the B 180 east of Klostermansfeld.
- Warme Bode, near Sorge
- Hassel between Hasselfelde and Stiege
- Selke near Alexisbad
- Wipper in Mansfeld