 University Boat Race Stones

The University Boat Race Stones are two small stone markers on the southern bank of the River Thames in west London, one 129 metres upstream of Putney Bridge and the other at Mortlake, 112 metres downstream of Chiswick Bridge.The stones define the starting and finishing points of the Championship Course (4 miles and 374 yards (6,779 m) from Putney to Mortlake, as measured along the centre of the river).