While there are 15 marked loops at Mount van Hoevenberg, there are another 10-15 connector trails that provide for nearly innumerable skiing options. For example: the Ladies' 5 k loop was the women's 5k relay loop during the 1980 Olympics. If that's not enough thrills and chills, detour up the Hi-Notch trail, which was part of the men's relay and men's 15 k events.
Mount van Hoevenberg connects with Cascade Ski Center off the Three Trails Loop (interconnect pass required) and with the Mr. Van back country ski trail off of Hi-Notch; Mr. Van will take you towards Adirondak Loj. Backcountry gear required if you want to make that trip.
Note that the major trails at Mt van Ho - East Mountain, Brookside, Porter, Ladies 5 etc are all one-way trails. Please respect the one-way skiing direction. The cross-country side of the trail system has the steeper climbs and descents. While the biathlon side doesn't have as much elevation change, it's just as technically demanding.
Mount van Hoevenberg conditions: http://www.whitefacelakeplacid.com/xc/mtvanhoe_conditions.php