A track for traction of an off-road vehicle such as an agricultural vehicle, a construction vehicle, a snowmobile, or another vehicle operable off-road. The track is mountable around a track-engaging assembly that includes a drive wheel for driving the track. The track is elastomeric to be flexible around the track-engaging assembly. The track includes an inner surface for facing the track-engaging assembly, a ground-engaging outer surface for engaging the ground, and a plurality of traction projections projecting from the ground-engaging outer surface. The track may have various features to enhance its traction, its floatation, and/or other aspects relating to use and performance of a track system of the vehicle.