Mostly paved ride, road wheels with wider tires would be fine. No Class VI.
Route differs from previous years between miles 54 and 55 due to a rail trail access dispute. Leave rail trail at mile 54 by going right on Bridge Street, go left on Route 4 for about 1 mile, left onto Depot Street then left at mile 55 onto Cilleyville Road where you'll get back on the original route.
7+ mile paved climb to Mt. Kearsarge trailhead, bathrooms available there. Back down to cafe at bottom, mile 38.