[RichLockyer]

Red Lodge trip last year:
Day 1 - 554 miles, 13:18hrs, 5 riders for a little over half the trip, 3 for the rest
Day 2 - 529 miles, 16:25hrs, 3 riders
Day 3 - 342 miles, 7:45hrs, 3 riders half the trip, then hooked up with the crew from Washington and Lolo

Day 6 - 428 miles, 17hrs, 2 riders last 120 miles, 6 riders first 300, includes Yellowstone and Tetons
Day 7 - 792 miles, 15:53hrs, 2 riders.

Each day other than the last was a mix of slab and mountain riding, which reduces average speed. The last day was all slab, but we were slowed down until with got to SLC by sunblock that kept getting into my eyes... I was able to get some eyewash in SLC and we got on with the ride. Several major thunderstorms north of St. George and in California, plus the high winds in California were really messing with Sergio.

In general, calculate an average speed of 50-55mph for 1-6 riders for an all-slab ride.


With my club, we've done LA to Mt Carmel Junction in one day, and the return trip in one day, with two 300+ mile loops on the days between arrival and departure, so 4 days of 300+ miles.
We've done LA to Williams AZ in a day with another 300 mile loop before leaving.

Solo or with one riding partner, I think you can comfortably plan 500 mile days indefinitely, unless you have some sight-seeing to do at some of the stops. Even with some mountain twisties thrown in, you can still complete 500 including meal and fuel stops in 15 hours or less, still leaving 9 hours for sleep.
With women in the group, maybe figure 400 or so for extended rides with a 500 mile day thrown in once or twice on a 5 day trip... "pee breaks" tend to be more frequent and they can't just pull over and grab a bush, women's restrooms tend to have a line.