It is not too often I see a large Snapping Turtle out in a field! I spotted this one at the Sequoyah National Wildlife Refuge in Oklahoma. The Arkansas River was behind it about two hundred yards. I'm not sure where it was going. the only water source in the direction it was headed was about 1/2 mile away. This is the second one I have seen in a weeks time. The other one was crossing a road and it was coming from the Arkansas River and going into a backwater area that was across the road.
I read that these turtles travel extensively overland to reach new habitats or to lay eggs. This species mates from April through November, with their peak laying season in June and July. Females travel over land to find sandy soil in which to lay their eggs, often some distance from the water. This one could be searching for a place to lay eggs.
Snapping Turtle Crossing Field - Sequoyah National Wildlife Refuge in Oklahoma.