When people brought I huge load of gold into Seatlle the news spread quickly and the Goldrush was on!
There were (and still are) only a few ways to get to Dawson City. Because of the coast mountains of the panhandle of Alaska and Canada's British Columbia only a few passes exist to get to the interior.
A lot of people went by boat to Vancouver and Seatle, bought their equipment and a boat ride to Skagway, to the trailhead.
It was winter and in a hurry to get to the goldfields and stake a claim everybody embarked on the Chilkoot pass.
Little towns sprang up along the trail offering all kinds of services to the people.
Walking the trail you get an impression what went on. The trail is not so difficult to hike but the goldrush was on in the winter making it much more difficult to cross the pass.
Sad thing was, everybody arriving in Dawson early spring was much too late. All the good places were already taken...