ATTQOTD: 97% crushed limestone or dirt trails through beautiful meadows and forest preserves, 2% Disney races, and 1% random races on asphalt. I agree completely with
@Professor_Cookie ; I don't think I would be a runner if that meant pounding the pavement.
Of course the implications of that can be a bit daunting in the winter. The trail I ran on yesterday here in Chicagoland was a mixture of ice, hardpack snow, and 4 inch deep crusted snow that I broke through. It was a tough slog, but not enough to consider a treadmill or the streets.