While large stretches of this hike are paved and well maintained, you'll encounter rougher dirt terrain after you clear the Johnston Canyon Upper Falls.
A sturdy pair of hiking boots are a must, if not for this hike then definitely for the entirety of your hiking adventure throughout Banff Canada.
It's also crucial to remember that weather in the mountains can change rapidly, so it's always a good idea to carry layers or a rain coat, plenty of food, water and sunscreen.
While packing sunscreen is a must, much of this trail benefits from tree cover which helps cut down on heat and sun exposure.
Most of the elevation change on this hike is pretty mild, so trekking poles aren't a must, but could be nice to have.
Don't forget to pack a swimsuit and lunch for when you reach the Ink Pots and Johnston Creek access point!
Bear spray is a must have for your adventures throughout the park as well. While you could probably get by without any just hiking to the Upper Falls here, you'll definitely want it if you're hiking out to the Ink Pots or other remote sections of the Canadian Rockies.
If you're looking for some help on packing hiking gear, be sure to check out my complete day hike checklist. That post will cover everything you could ever want on this hike or most other day hikes within Banff National Park.