From Longman Dictionary of Contemporary Englishon footon footWALKif you go somewhere on foot, you walk there It takes about 30 minutes on foot, or 10 minutes by car.Grammar ✗ Don’t say: by foot → foot
Examples from the Corpus
on foot• The best way to see Yosemite is on foot.• It's not far. It'll take you about ten minutes on foot.• The two men had attempted to cross the mountains on foot.• The bus left us at the bottom of the hill, and we went the rest of the way on foot 