1. dated The path or journey to redemption or rehabilitation (as for a sinner or criminal) by accepting, practicing, or converting to Christianity at an evangelist revival meeting. Alludes to sawdust-covered aisles of the temporary church dwellings for revival meetings in the early 1900s. Primarily heard in US. That travelling evangelist has been pleading for everyone in town to hit the sawdust trail, for he believes that the end is nigh.

2. (sometimes capitalized) dated The itinerary of or route taken by a travelling evangelist preacher. Primarily heard in US. Old Bill Baxton? Shoot, he's been on the Sawdust Trail for the better part of his life. He probably wouldn't be able to settle down in one place if he tried!