run, flee, leave in hurry, trot, trotting
跑 centers on moving quickly on foot: running, trotting, fleeing, or leaving in a hurry.
跑 combines 足 (foot) with 包, which likely contributes the sound. The character expresses running or moving quickly on foot.
The left side 足 means foot, and the right side 包 looks like a person wrapped up and hurrying. Picture a wrapped-up figure dashing away on fast feet: running, fleeing, or trotting.
For ホウ, imagine a runner fleeing so fast they let out a loud 'hoe!' sound: hoe -> ホウ, as their feet pound the ground.