How long does a visit to the Glacier Canyon take?

Plan for 1 to 2 hours. The path leads about a kilometre into the canyon and back the same way, roughly 2 kilometres in total. If you visit the Crystal Museum at the exit and take time at the information stations, you'll be closer to 2 hours. A quick walk-through takes about an hour. The Spiderweb is worth a few extra minutes on its own.