ambling
ambulation
backpacking
footing
footing it
footwork
going on foot
hiking
hitchhiking
hitching
hoofing
legwork
lumbering
marching
pedestrianism
perambulation
sauntering
staggering
strolling
thumbing
thumbing a ride
toddling
tottering
treading
trudging
waddling
walking
camping
clamping
cramping
damping
lamping
ramping
revamping
stamping
tamping