I average riding about 50 miles per week year round. I ramp that up to about 150 as a tour date approaches, done with minimal resting during the rides.

During the tour, as daily mileage rarely exceeds 50, the 10 hours of daylight I've got to do that in makes it doable, day after day.

Loaded touring is not a race, more of a relaxed slog. Least for me.