This 12¾ mile (20½ km) section begins exactly on the edge of OS Explorer map 284. The walk passes along Cleethorpes sea front, through the streets of Grimsby and along sea defences to Immingham.
A number of bus services operate in the Cleethorpes/Grimsby area. Immingham is served by Service 45 which runs from Grimsby and by Service 250 which runs between Grimsby and Barton-upon-Humber.
Starting from a point 150 metres to the southeast of the Greenwich Meridian, grid reference TA32610673, continue along the cycleway/footpath past the Leisure Centre. Follow the promenade along the sea front, past the pier, to its end. Continue ahead along the sea wall until reaching a footbridge over the railway line on the left. Cross this bridge and turn right on to Harrington Street. Pass New Clee railway station and at the road junction turn left on to Humber Street and then right on to Cleethorpes Road.
Cross Riby Square with great care to join Railway Place which runs parallel with Cleethorpes Road. Pass beneath Cleethorpes Road and climb a stairwell to reach the central reservation of Cleethorpes Road and cross the railway line. Descend down a second stairwell and continue alongside Cleethorpes Road. Cross a second bridge and at the next roundabout, turn right on to Moody Lane.
After crossing New Cut Drain, just past the sewage works, turn right on to a signed public bridleway (depicted on the latest OS maps as a 'Other route with public access'). After just a few metres, this becomes a concrete sea wall and this is followed all the way to 'Long Strip' where the bridleway leaves the sea wall, heading west through a wooded area to reach a busy road. EXTREME CAUTION: Turn right along this road and then left at the next junction. Generally, there is no roadside path along this busy road between the western end of 'Long Strip' at TA210152 and TA205149. A roadside path across the railway line bridge exists on the southern side of the road.
Shortly after crossing the railway bridge, a path appears on the northern side of the road, join this and follow it right then left to reach a roundabout. Turn right. Turn left on to Pelham Road and follow this to the County Hotel 250 metres ahead at grid reference TA18951515. This marks the end of this section.