The road you walk on is the sidewalk... at least I hope that's where you walk.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
to walk on the sidewalk
to cross the sidewalk
to run on the sidewalk
This sidewalk is wide and easy to walk on.
Cars should never run on the sidewalk.
Can a Segway run on the sidewalk?