The boys raced to the finish line.
The boys raced for the finish line.
Start the race
At the finish line
The end line of a ralay race
Finish line
The starting point in a race is called the starting line. The end point of a race is called the finish line.
The first to cross the finish line
An arms race, an eating contest, a swimming race (the race is finished when a swimmer touches the wall, so they don't pass anything in order to finish).
A swimming race, although some would say touching the wall is like crossing the finish line.
so they can finish in a faster time
The person who crossed the finish line last.