A two-wheeled stroller is disclosed and claimed. The stroller is a tow-type stroller to enable a child to accompany an attendant who is engaged in walking or running activity over a variety of ground surfaces and grades at various walking and running velocities. The stroller includes a carriage assembly, a tow bar assembly, and a harness assembly. The carriage assembly includes a seat upon which the child being transported is seated and two wheels, with the center of gravity of the carriage assembly and child (if present) positioned below the wheel axis of rotation. The harness assembly is adjustably affixed to the attendant, and is connected to the carriage assembly by the tow bar assembly.