100 Mile Challenge?

We enjoyed Barrie again this weekend. The cantata was done very well, and Stephanie's solo was well worth the trip! We hope we'll be able to hear her sing again! Christmas cantata?
We arrived home in time to catch the first program of the "100 Mile Challenge" on the Food network. It's a new show about the efforts of some residents of Mission, BC, as they clean out their pantries to help keep our earth green: ALL the foods that they prepare and eat must have been produced in a 100 mile radius of the city. (The show can be seen on the net on Monday- go to www.foodtv.ca) No lettuce and strawberries from California, or oranges from Florida, or bananas or pineapples or spices or other items from other countries. I guess that means muisjes from Holland, too!
I've been intrigued by the idea on and off in the last while, but I'm not sure how well it would work here in eastern Ontario. We definitely do not have the variety of fruits that BC has, nor the longer growing season. And our 100-mile radius is cut in half by Lake Ontario and the Canadian/US border!
John drew a radius on a map - our 1/2 circle starts just west of Brighton, goes up to Norwood, over to Bancroft, just east of Barrie's Bay, just south of Pembroke and then into Quebec, and comes down at Lachute, QC, over to Salaberry-de-Valleyfield and down to the US border.
So the next question is: what IS available in this area? And how intensive about this do we want to be? Do we really want to forgo tea and coffee and spices and oils and....? How about a compromise? Is there another way to look at this?