Analysis of information sources in references of the Wikipedia article "Don Mills Trail" in English language version.
By 1919 ... the CNoR was absorbed into the new Canadian National Railway. When the Leaside yards and repair shops were completed in 1920 they were almost redundant (especially after the Spadina yards were opened seven years later). They were closed in the 1930s...
Don Mills Trail Extension from Bond Avenue to north of York Mills was opened on August 2, 2016. Two development applications to connect trail to Sunnybrook Park within 3-5 years.