In order to participate in this moderately strenuous Yellowstone hiking tour, you need to be fit and have a bit of hiking experience. You can expect to spend up to 6 hours per day hiking (up to 10 miles / 16 km and 2,500 ft elevation change) while carrying daypacks with water and snacks. Shorter hikes will sometimes be available instead of more challenging hikes in case you would like them. July in Yellowstone and Grand Teton NPs can be warm and dry in the day, but cold in the evenings.
It was a great tour. Beautiful place. Guides, Kyle and Beau, were super nice, knowledgeable, and did the best to give us a wonderful experience. I highly recommend this tour and guides.