This path is a recognised cycle route and provides an excellent off road alternative for mountain bikes. It is a good quality path from Brig O' Turk to where it joins the main road near Kilmahog. It is part of the Great Trossachs Path. I think it should be marked as a blue route rather than red if I've understood the key correctly.

seems unlikely to be a service road

new Aldi is Unit 1, West Retail Park, Main Street, Milngavie, G62 6 JP and opening hours are Mon to Sat 8am to 10pm and Sun 9am to 8 pm.

don't know how much of building is it

Unnamed school, details needed