Around the Rock - 154 Miles Around the Tetons - Bike Check and Recap

I didn't want this video to be half an hour long, so if you're interested you find a full ride report in the link above. Around the Rock is an amazing self supported loop around the Tetons and through Grand Teton National Park. 50% Gravel cycling and 50% paved with 8800 ft of climbing. I rode my Trek Checkpoint

[WildOutdoorLiving]

What's the furthest you've ever ridden in a day?

[Whim]

Doing this ride on August 18, whats the gravel like? do you want / need a wider 42c tire? or would it be better on 35c / something faster rolling?