Prior to 2018, the Cape's Bay Colony Rail service officially ended in the town just west of Route 134. Although the right of way for this line probably existed, there has long been no railroad bridge over Bass River and therefore no trains have entered the town of Dennis for decades. In approximately 2018, this railway was removed, which allowed for the expansion of the Cape Cod Rail Trail. Construction of the extension included a pedestrian bridge over Bass River, which connected the trail to Yarmouth. The Cape Cod Rail Trail is a paved bicycle trail that runs "down" the Cape to Wellfleet along the former right-of-way of the railway. There are also several other bicycle trails in town. The nearest regional air service is at the Barnstable Municipal Airport, and the nearest national and international air service is at Logan International Airport in Boston.
