The word(s) "travel" appears 23 time(s) in 23 verse(s) in Quran in Muhammad Pickthal translation.

(21) Have they not travelled in the land to see the nature of the consequence for those before them? They were more numerous than these, and mightier in power and (in the) traces (which they left behind them) in the earth. But all that they used to earn availed them not.

(22) Have they not travelled in the land to see the nature of the consequence for those who were before them? Allah wiped them out. And for the disbelievers there will be the like thereof.

(23) Lo! thy Lord knoweth how thou keepest vigil sometimes nearly two-thirds of the night, or (sometimes) half or a third thereof, as do a party of those with thee. Allah measureth the night and the day. He knoweth that ye count it not, and turneth unto you in mercy. Recite, then, of the Qur'an that which is easy for you. He knoweth that there are sick folk among you, while others travel in the land in search of Allah's bounty, and others (still) are fighting for the cause of Allah. So recite of it that which is easy (for you), and establish worship and pay the poor-due, and (so) lend unto Allah a goodly loan. Whatsoever good ye send before you for your souls, ye will find it with Allah, better and greater in the recompense. And seek forgiveness of Allah. Lo! Allah is Forgiving, Merciful.