Usually folks figure sand at 100 pcf. There are 27 cubic feet in a cubic yard. So to continue the answer the previous poster made... Using the 100 pcf average weight for sand, and that there are 27 cubic feet in a yard, then 2 yards is equal to 54 cubic feet and at 100 pcf, the total weight is 5400 lbs, or 2.7 tons.
The walking distance measure denotes the distance that can be travelled by walking in a fixed amount of time. In Japan, the standard measure for walking distance is 80 meters for 1 minute of walking time. It is the standard used in real estate listings. For example, if a building is a 10 minute walk from a particular park or train station, it is 800 meters away.
For a pedometer to measure distance you first must enter your average step length. Step length is the distance covered in an average step, either from heel to heel or toe to toe (see picture below). Your step length is required for most pedometers so they can calculate Kilometers / Miles walked. Your pedometer does this by multiplying your step length by steps walked. Example: If your step length is 70 cm and your pedometer has recorded 5,000 steps The distance calculation is 0.7 (70 cm) x 5000 (steps) = 3500 (meters) / 1000 (meter in a Km) = 3.5 km.