Awooden walkway and a sandy beach are at the same temperature. the sand feels much hotter because it has a greater

Specific heat capacity.

As it has a greater specific capacity than wood, it takes more heat energy to increase it's temperature by 1 degree Celsius than that of wood. Hence, though both are at the same temperature, sand contains way more heat than wood.  

It equals just about 6,300 km per hour each day an week