You will need to enter your travel expenses for medical treatment the same way you enter your medical expenses.
Here are the steps using TurboTax online:
If the eligible medical expenses are less than the minimum amount displayed by TurboTax, the user selects Done, as there aren't enough expenses to generate a tax credit. Otherwise, select Enter New Medical Expense, and the Medical Expenses Receipt step appears.
Note: Before beginning, make sure you've entered all your income information into TurboTax. TurboTax will use these details to automatically calculate the minimum medical expenses you need to enter, as well as to determine your eligibility for claiming a deduction.
Please see the links below for additional assistance:
TurboTax FAQ: How do I enter medical expenses?
Details of Medical Expenses as per the Canada Revenue Agency (CRA)
Thank you for choosing Turbo Tax.
Thank you - I do know how to enter the medical expenses but mileage is different....anyone have any suggestions?