MARATHON

Since 1921, the standard length for one of these has been 26 miles 385 yards (8)

Solution has appeared in 1 crosswords (0 across and 1 down):

• Quick crossword No 16,580 — 2023-06-26 23:00:32
  12D: Since 1921, the standard length for one of these has been 26 miles 385 yards (8)