Question for anyone from Toronto out there:

How do you get outta this city? I live downtown and would like to plan just a short few days tour to check out some nearby nature reserves next month. I'm thinking of heading out northwest in the direction of Brampton and beyond, checking out Hockley Valley and Luther Marsh. Really just an excuse to get out there for a short trip.

What routes do you take to get outta this city? Any other short tours from Toronto you'd recommend? (I'm thinking 400km or less, round trip... I've only got a few days.)