We didn’t take either crampons or an ice axe. Most people we met on the trail didn’t take them either. We hiked in early July, so I can speak to the need in June but don’t think you really need them from mid-July on. There’s lots of snow from the U.S./Canada Border to Happy Camp in early July but we didn’t have any difficulty without crampons or an ice axe. The Chilkoot Trail is a great hike. I highly recommend it.
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