You rang?
I don't believe the rail corridor has been considered for a trail here. However, the lands of the former Scarborough Transportation Corridor (the lands acquired to build the Scarborough Expressway have been, in spots). The STC lands generally parallel the rails.
Trail is in in place from Brimley to Bellamy:
View attachment 553056
I know the City looked at some of the following section below, not sure if it was the whole thing:
View attachment 553057
This was over 10 years ago now, at the time, the homeowners threw an unholy fit at the thought of a bike trail behind their homes, all sorts of nonsense about attracting ne'er do wells.
The corridor was sold off near Midland, and is pinched there as a result. (short sighted)
East of Guildwood, alot of the land is there, but the homes on Portia street might be a problem. Dow Chemical might be as well.
There is no space west of Kennedy to west of Warden:
View attachment 553058
Warden to VP the apparent space to the north, a few properties excepted is reserved to the 4th track project for GO Transit.
The land to the south is being developed.
West of Victoria Park there is room for a segment to Dawes Road, but that's about it.
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To me, the high priority would be the Markham to Kingston Road segment. Its been looked at before and is viable. Most of the rest is challenging and/or pretty short.