furthest
Furthest (adv) means to or at the greatest distance; most far. Example: “Of all the runners, she went the furthest before stopping to rest.”
How to use furthest
Learner’s notesIn plain EnglishThe superlative of "far" — the greatest distance or extent.
"Furthest" and "farthest" are largely interchangeable; American English tends to prefer "farthest" for literal distance.
Fill the gap
Can you complete this real example?
Of all the runners, she went the _____ before stopping to rest.