Description: A brisk walk through Hornchurch Country Park green open space along the Ingrebourne Valley and across Rainham Marshes past the RSPB reserve, a haven for all kinds of wildlife, finishing at Purfleet.
Train: London Fenchurch St 9:30; West Ham 9:39; (Shoeburyness train). Buy return to Purfleet. Freedom pass holders only need to buy a single from Purfleet to Rainham.
Lunch: at Rainham for picnic or cafes.
Toilet: toilets at Upminster station, at Ingrebourne Visitor Centre after 3 miles, at Tesco in Rainham and RSPB Centre at Purfleet.