10+ feet. It's just slipping for days, Fully Compressed Spring on the slipper too. When I replaced the 1415 with the 1410 and ran the white SC10 2x4 pads, it was a rocket. Felt great, Minus temps, so I put in the 1415, and same pads, (no loss of thickness on pads) and now it does this for days, like I said, fully compressed, at least 8-10 feet.