This is a very flexible trail in that it is suitable for most paddle craft, including stand-up paddleboards, with options on distance and pickups. It works very well as an out-and-back trail in either direction, with carparks at both ends, or as a one-way if collection can be arranged.
Worth noting is that between the Flatford and Dedham stretch, there is an excellent riverside footpath with coffee shops at either end for family members who may want to accompany you and not paddle.
Starting at the Cattawade Picnic Site, paddlers pass through nature reserves and open farmland before turning right at the weir for Flatford Mill Lock. On the way, look out for herons, kingfishers, moorhens, swans, and a wonderful assortment of other wildlife. The water is quite clear, so fish can be observed and often seen jumping.
For an alternative finish at Dedham: Dedham Riverside Carpark, Dedham Rd, Dedham, Colchester CO7 6DH. Pay and display car parking, purpose-made landing point, Boathouse Café, and rowing boat hire.