It runs parallel to the A607 to the west of Bracebridge Heath and through Waddington, Harmston, Coleby, Boothby Graffoe, Navenby and Wellingore along the Lincoln Cliff, then follows the old Ermine Street, crossing the A607. Near "High Dyke Farm", just north of the A17 it meets the boundary of South Kesteven and North Kesteven, west of RAF Cranwell. At "Byard's Leap" it crosses the A17 and follows the B6403 towards Ancaster along the South Kesteven boundary (which continues to just north of Ancaster). It heads west and enters South Kesteven. It meets the A607 again at Carlton Scroop, then crosses the River Witham and passes through Marston and Long Bennington. It was extended to Long Bennington in 1997 to allow walkers to cross the A1 on a road bridge, as previously they were obliged to cross the road directly, near Foston. It no longer goes through Allington, and crosses the A52 near Sedgebrook and a level crossing over the Nottingham to Grantham Line. It then follows what used to be called "Sewstern Lane" and meets the Lincolnshire – Leicestershire boundary near Harston which it follows and crosses the A607.