The only resort that keeps their lifts running into May is Killington. Sunday River and Sugarloaf usually operate till the first of May. Sugarloaf usually has good skiing till then and sometimes after, but no way to get to it. Jay Peak gets a lot of natural snow, but does very little in the way of snowmaking, and tends to loose their base quite quickly, as manmade snow is denser and holds up longer. So the only real option in the east is Killington, unless you want to hike to Tuckerman's. I wouldn't be too quick to count out the late season just yet. When you have a slow start to the season like we had this year, the bigger resorts that are into making snow like Killington are forced to lay down a heavy base to keep things going. Usually mid February to mid April is when they typically get the most snow. Add that to a well established base and it can make for some great late season skiing. And I've had more than a few powder days in May up there. In the last few years, Killington has not made as much snow late into the season as they used to, obviously as a money saving move. I can remember skiing there as late as June 14th, and without the need of rock skis, but that hasn't happened lately. The reality is that the only people skiing at that time of year are the season pass holders and the hardcore locals, neither of which the resort makes a lot of money off of. That's the reason most of the resorts in New England close in mid April, not for the lack of snow, but for the lack of paying customers. Too bad, because for me, spring skiing is almost like a bonus season, warm temps, longer days, less people, and plenty of deals to be had. Too bad more people don't go out and take advantage of it, maybe some of these resorts would consider staying open later.