The main tourist destinations near Medan aside from Bukit Lawang are Berastagi, a hill-station, and Danau Toba, the world's largest voclanic lake. Both Berastagi and Bukit Lawang are generally visited as a return trip from Medan, although it is possible to arrange to take a tourist bus or charter a bus between the two towns to cut out the stay in Medan. Danau Toba is a little further afield: a tourist bus/charter can be arranged from Bukit Lawang, or from Medan itself, about a five-hour journey. A slightly cheaper option is to take the local bus from Amplas bus station, Medan.
All will drop off in Tuk Tuk on the shores of Lake Toba, for a ferry across. From Lake Toba, travellers will either double back to Medan for an onward or homeward flight, take a six-hour bus journey to Sibolga, the port for Pulau Nias (which is then an 8 hour ferry journey), or continue on by bus to Bukittinggi (which offers cool air, and Danau Maninjau, another lake), a 12-hour journey (longer in slower, cheaper buses). Travelling by bus back to Medan and flying onto Padang, near to Bukittinggi, or to Gunung Sitoli (on Nias itself) would be a slightly shorter and more comfortable journey, albeit more expensive. From Bukittinggi, most people will take the long bus journey to Java, or fly onto Jakarta.
A quicker, more costly alternative is the daily forty minute flight from Medan to Silangit, just a few minutes from Lake Toba. This is operated by Susi Air on 12-seat Cessna aircraft.