no it wont..it dosent do TRACKS but just ROUTES..as per garmins web site ..
BUT as I`m sure you know GB the only uk companies to support o/s maps are memory map and now Garmin discovery uk..down to 1:25k so all the trails etc..
I`ve use the nuvi550 [basically a zumo 220 ] and have done custom routes for the trails and loaded it as a route BUT run satnav in offroad mode..the garmin software calculates the route differently in automative and offroad modes..
with routes you are restricted to 500 waypoints but tracks can do 20000..I use routes for road touring and tracks for the trails..uk and europe..
the zumo for the money is good but it aint a garmin montana which is excellent apart from no bluetooth-never used it myself...the voices in my head talk to me :laugh: :laugh:
you need tracks facility to also "track" your ride to share or review at home..
I`m not being pig headed...

my suggestions try a few out I`m sure some members on here live near you..
try these in a zumo and see what happens..
- mud.gpx
- (17.29 KiB) Downloaded 105 times
track file
route file