How the hell do I grind the subway rails? from where to where do I have to grind. If tried many things but non of em work... please give me a detailed description of how, where, you do it. Thank You

Grind the Subway Rails -- $1100

You need to collect 5 subway tokens before doing this.

Once you do that, head straight from the start until you go under a bridge.
Once past that, turn around and you should see an esclator. Go up it.
Now grind the subway rail the other way and keep going until you get
a transfer bonus for it, then jump and land on the rail.
hope this helps!!

thank you this reli helped mii alot ive been thying for 3-5 hours omg thank you