It is possible to drive to within 4 kilometres ( 2.5 mi ) of the summit during summer .
A winter road closure leaves a walk or ski of 7.3 kilometres ( 4.5 mi ) .
It is possible to drive to within 4 kilometres ( 2.5 mi ) of the summit during summer but a winter road closure leaves a walk or ski of 7.3 kilometres ( 4.5 mi ) .