Lets assume you live in Colorado and you already have an epic pass so you wont need to buy lift tickets.Gas is an average of $3.45 right now, so lets say you have to go 300 miles in CO at 25 Mpg. Thats $40 in gas to get the CO resorts, as well as no lodging costs since you live there. Then its off to Tahoe. Its a 1,100 mile drive from Denver to South Lake Tahoe, and id say its reasonable to assume you'd be going another 75 miles around tahoe. That's another $165 in gas. Then you have lodging, and even cheap lodging for 4 nights in tahoe during ski season is going to be $175 a night. Thats $865 for the Tahoe leg, and $905 total. Now we drive to the midwest from tahoe. From South Tahoe to both midwest areas, its 2,550 miles, and at least 3 nights at a cheaper $90 a night in motels, so add another $627.
Now we're at $1600, and we haven't left the US yet. Lets say since we're in Michigan we fly out of Detroit to get to France. Airfare with skis is $1,100 one way. Lets just say $150 a day for travel costs (car rental, gas). Iv'e figured between all the resorts its about 13 days skiing and 11 travel days, so about 24 nights. Some places are cheap to stay and some expensive, but it could average to about $150 a night if you stay in some hostels. So thats $300 a day/night for travel and lodging for a conservative 25 days., then another $1000 for the flight back to Denver. We now sit at 11,200. Lets say food averages 75 a week over a total trip time of 5.5 weeks, and thats another $430 if you eat cheap.
Grand total $11,600 to pull this off if nothing went wrong, no extra days are spent anywhere, and with the cheapest options i found.
With the current unlimited epic pass (which no one needs, get the local pass) at $709, this trip could pay for 16 years of epic passes. Or 21 years of the Colorado local pass. Send this to Vail and see what they say.