21D
Milton
Ramais
- Union Station Bus Terminal
- Cooksville
- Hurontario St. @ Fairview Rd.
- Hurontario St. @ Elm Dr.
- Square One
- Rathburn Rd. W. @ Elora Dr.
- Rathburn Rd. W. @ Elora Dr.
- Rathburn Rd. W. @ Elora Dr.
- Rathburn Rd. W. @ Mavis Rd.
- Rathburn Rd. W. @ Perivale Rd.
- Rathburn Rd. W. @ Creditview Rd.
- Erindale
- Creditview Rd. @ Rathkeale Rd.
- Eglinton Ave. W. @ Mississauga Rd.
- Eglinton Ave. W. @ Summersky Crt.
- Erin Mills Pkwy. @ Erin Centre Blvd.
- Erin Mills Pkwy. @ Mcfarren Blvd.
- Thomas St. @ Erin Mills Pkwy.
- Streetsville
- Streetsville GO Station Parking Lot
- Thomas St. @ Highbank Rd.
- Erin Mills Pkwy. @ Vista Blvd.
- Erin Mills Pkwy. @ Britannia Rd. W.
- Millcreek Dr. @ Erin Mills Pkwy.
- Millcreek Dr. @ Millrace Crt.
- 6715 Millcreek Dr. @ Aquitaine Ave. (Millcreek Business Centre)
- Meadowvale