TREK

Long hard journey on foot (4)

Solution has appeared in 4 crosswords (3 across and 1 down):

• Quick crossword No 15,970 — 2021-07-13 23:00:00
  9A: Long hard march (4)
• Quick crossword No 15,820 — 2021-01-20 00:00:05
  7D: Long journey (4)
• Quick crossword No 15,626 — 2020-06-05 23:00:06
  8A: Long walk in the mountains? (4)
• Quick crossword No 15,445 — 2019-11-07 00:00:40
  7A: Long hard journey on foot (4)