the boat race course between putney and mortlake
The Boat Race The course is 4 miles and 374 yards (6.779 km) from Putney to Mortlake,[41] passing Hammersmith and Barnes; it is sometimes referred to as the Championship Course, and follows an S shape, east to west. The start and finish are marked by the University Boat Race Stones on the south bank. The clubs' presidents toss a coin (the 1829 sovereign) before the race for the right to choose which side of the river (station) they will row on: their decision is based on the day's weather conditions and how the various bends in the course might favour their crew's pace. The north station ('Middlesex') has the advantage of the first and last bends, and the south ('Surrey') station the longer middle bend.
Stock car racing Stock car races take place predominantly on oval tracks of 3 or 4 turns, with all turns to the left. Oval tracks are classified as short track (less than 1 mile), intermediate or speedway (1 to 2 miles) or superspeedway (over 2 miles). Road courses are any tracks having both left and right turns. Depending on the track, typical race speeds can vary from 90 miles per hour (140 km/h) at Martinsville to over 200 miles per hour (320 km/h) at Talladega. In 1987 Bill Elliott's 212.809 mph (342.483 km/h) qualifying time at Talladega brought about a change at superspeedways (Daytona and Talladega). Such high speeds and Bobby Allison's car going airborne into the catch-fence and injuring fans forced NASCAR to implement power-reducing measures, one of which was the mandated implement of below carburetor restrictor plates. This later became known as restrictor plate racing.