At the southern edge of the Chicago Botanic Garden, visitors can connect with the 20.1-mile North Branch Trail. One of the great urban pathways of Chicagoland, the North Branch Trail runs through the Skokie Lagoons and along the North Branch of the Chicago River. To reach the trail from the botanic garden, head south on the service road on the east side of the lake. The path starts on the other side of Dundee Road.