Manifests as deep impressions in any surface - earth, stone, even snow - that remember the passage of wagons. Cannot be faked or imitated - only those who have genuinely traversed the full trail leave true Rut Reckoning marks. The ruts glow faintly with frontier gold when the bearer approaches their true position in the column. Grows more permanent with each league completed, eventually becoming as enduring as the trail itself.

Rut Reckoning is the trail's incorruptible memory, recording every passage and delivering the reckoning that determines who deserves to reach the promised land. It is the ultimate credential - Rut Reckoning marks are the frontier's way of saying this traveler earned their place in Oregon Country.