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Sewstern Lane, or 'The Drift', used as part of the Viking Way long distance path, can be traced from Long Bennington for about 20 miles south where it joins Ermine Street just north of Stamford. The southern part of the lane (south of its crossing of the Salt Way, Roman road Margary no. RR58a, at SK860298) corresponds to the Roman road Margary no. RR580 (Margary, 1955). According to Hoskins (1955) the track has been used from pre-Roman times, and was one of the main north-south routes before being superseded in the seventeenth century by the Great North Road to the east (current A1 between Long Bennington and Stamford). But the lane continued to be used as a major cattle-droving route ('Drift' = the driving of cattle or sheep), as it would have avoided the hard surface, lack of grazing, traffic and expensive tolls on the Great North Road.
Hoskins, W.G. (1955). The Making of the English Landscape. Pelican Books.
Margary, I.D. (1955). Roman Roads in Britain, Volume 1, South of the Foss Way - Bristol Channel. Phoenix House Ltd. (London).

A line of roads or tracks known as the 'Salt Way' (or 'Saltway', 'Salter's Way') can be traced for about 40 miles across the north-east part of Leicestershire into Lincolnshire. The identifiable route (who knows its western and eastern limits?) essentially corresponds with Roman roads, Margary numbers RR58a and RR58b. (Ref. 'Roman Roads in Britain', Vol. 1, by Ivan D. Margary).
RR58a started at the River Soar (Barrow upon Soar); crossed the Fosse Way (RR5f, modern A46) at Six Hills; ran along the Belvoir escarpment and Leicestershire Wolds; crossed the River Witham at Saltersford (SK 927 334), which may be the site of the Roman settlement of 'Causennae'; before joining Ermine Street (RR2c, modern B6403) near Cold Harbour.
From Ermine Steet RR58b, also known as 'Salt Way' ran along, or close to the line of the modern A52 into the Fens at Donington. Fuller details and references at Link