On his second turn, the ball traveled 180/2=<<180/2=90>>90 yards.
After two turns, the ball had traveled 180+90=<<180+90=270>>270 yards.
Since, after the second turn, the ball was 20 yards past the hole, this means the distance from the starting tee to the hole was 270-20=<<270-20=250>>250 yards.
#### 250