For the IronButt, I am planning (probably after I will have changed my 22 years old coolant hoses, so probably next year) I am planning to do a Montreal - Windsor/Detroit - Montreal, or... Montreal - Toronto - Quebec - Montreal. Something like that. An advantage that I see with the 401, is that they have ONroute rest stops at every 45 minutes or so. So, gas, food, coffee, toilets, are always nearby, directly on the side of the freeway. Also, the traffic speed is 10, 20, 30 kmh over the limit. So you can flow at the traffic speed without risking a ticket, and complete the 1000 miles in a bit less time.