Pedestrian: a walker; someone who journeys on foot.
As an adjective, something pedestrian describes a going on foot; walking; made on foot; as a pedestrian journey.
Interestingly, pedestrian also means boring, mundane, banal, prosaic, or commonplace. When we use the word this way, we are actually reaching back to the old Latin word pedester, which described the long, boring marches of the Roman infantry.
Pedestrian comes from the Latin word for foot, pes (genitive, pedis).
Speaking of journeying on foot, here is a good reminder:
I don’t think jogging is healthy, especially morning jogging. If morning joggers knew how tempting they looked to morning motorists, they would stay home and do sit-ups. – Rita Rudner