Let's make one thing clear: I have not put my skis away.
That said I have started a partial transition ... running 2-3 times a week. In most years - certainly this year - it really is not possible to run trails in April, however there are lots of dirt roads, including one 200 yards from my driveway.
Stash and I had a nice short jog on snow, patches of ice, mud, dirt, through puddles and small streams ... April in the Adirondacks.