STW blindness to the phrase “NyA would be too hard” it seems.
The Mach 1,2,3 trails might be a goer although watch out for the Chute on the 3. , or you could plump for the Ystwyth/Rheidol trails which leave from town itself but are basically nice flat commuter routes through the valleys. hardpack or tarmac for the most part. How about driving to Nant-y-Moch and doing the Northern loop of the Syfydrin trail? That section is mostly open moorland, and lakeside. Or park at Pendam and loop out to Nant-y-Moch on the Syfydrin but return to the Pendam loop instead of routing down the Bont Goch descent.
Righthand loop on this route: