From the top of the jeep track at Mawson it is about 3.7 kilometres to K Col. Some 1.8 k of this is on quite rough and large boulders and considerable care is needed in negotiating these conditions. It takes about 1:30 to walk there. This section which is marked in red on the map below is quite hard walking and includes a 70 metre climb with a 130 metre descent and of course the reverse on return.
The first section from Mawson is mostly on boardwalk.