This is a short route connecting Exeter St David's train station to National Route 2 by following the River Exe and part of the Exeter Canal towpath.
Starting from Exeter St David’s station the route crosses the River Exe via a bridge on Station Road and then turns south to follow paths alongside the River Exe and then Exeter Canal. The route travels through the Riverside Valley Park and links with National Route 2 at Bridge Road. National Route 2 continues on the Exeter Canal all the way to Exminster.
There is the opportunity to take the ferry across the river to Topsham and continue back to Exeter on the opposite side of the river.
https://www.sustrans.org.uk/find-a-route-on-the-national-cycle-network/route-34/
This route is also known as Exeter Strategic Cycle Route E1
In line with the priorities outlined in the Council’s Cycling and Multi-Use Trail Network Strategy, a network of proposed cycle routes was put forward in 2015. For the Exeter strategic cycle routes, it was agreed that the cycle routes E3 and E4 and E9 were seen as key primary cycle routes as they connect areas of growth and development east of the city with schools, hospital, local centres, University and the city centre.
Open Street Map
https://www.openstreetmap.org/relation/5419856
Travel Devon Set within some of the county’s most beautiful landscapes, Devon has miles of cycle routes and trails for all kinds of cycling. Whether you’re looking for a quiet journey to work or a more challenging long distance route, there will be one for you.
https://www.traveldevon.info/cycle/cycle-routes/
Wikipedia Wikipedia does not have an article with this exact name