Excellent directions Joe, Thanks.
I'd also add beware Friday and Sunday nights in the Boston area , they call it "Beach traffic" You may also consider taking I-290 North off I-90 instead of following it straight to I-495. It's a bit straighter, ends at I-495 anyway, and keeps you a little farther away from that Boston deal I mentioned. Check it out on a Map, like Google.
As far as directions to the track from lodgings south....
Presque Isle is farther south, US 1 leads from it through Caribou to "Access rd 89" East.
Follow that about 6 or so miles to Commerce Center rd, make a left. Intersection I believe also known as Cote Corners, has a bunch of Junk military vehicles on the North East corner. Follow Commerce Center North about a mile to South Carolina rd Left turn, then New Mexico, right turn. At end bear left to track entrance. Not right like last year.
Also, if you are camping or otherwise need not go through Presque Isle/Caribou, consider taking the right Fork out of Mars Hill, up the other US 1 to the East. Follow it all the way up to Limestone, Rt 89 West to that same Commerce Center Rd intersection. Less local congestion and speed limited areas.
Hope I've not confoosed youse-all ?
Bob W Map Dude LTA