path, route, road, distance
路 centers on a way or course for travel: a path, road, or route. The distance sense is a natural extension, referring to the length of such a way.
路 combines 足 (foot) with 各, which likely contributes the sound and the idea of going or arriving. Together they express a path or road for walking.
The left side is a foot 足, and the right side 各 looks like a person arriving at a destination. Picture a foot stepping along a path to reach a place: 路 is the road you walk.
For ロ, imagine a low road stretching into the distance: low -> ロ, and the foot 足 walks along the path.
road; highway
route (bus, train, air, etc.); line
circuit
passage; pathway; roadway; avenue; aisle
route; course; path
course; route; path; channel
on the road; on the street; in the street
railway track; railway line; railroad; railway; track; line
road surface
alley; alleyway; lane
(air or sea) route; course; line; run
maze; labyrinth
waterway; canal; channel; watercourse; aqueduct
return journey; one's way home; one's way back
road; street; avenue
market (for goods, services, etc.); outlet (for selling); opening
crossroads; intersection
means of survival; means of escape; way out of a difficulty
land route; overland route
forked road; crossroads
blind alley; cul-de-sac; dead end street
air route; air lane
sea route
(regular) route; fixed route; specified route; suggested route