пешком bedeutet auf Englisch

on foot▼(walking, jogging, running)
preposition
[UK: ɒn fʊt] [US: ɑːn ˈfʊt]

afoot▼(means of locomotion, walking)
adverb
[UK: ə.ˈfʊt] [US: ə.ˈfʊt]