Well if you do decide to travel to Iowa for Ragbrai, contact me in advance. I have extra bikes. Beats paying for hauling/shipping of bikes round trip.
I boxed up 8 of 95 bikes at the end for return shipping to help out some buddies. And there were more boxed by another charter.
About 50% of the bikes on the ride are late model carbon/aluminum road bikes (Trek, Giant, Specialized), but other 50% are anything goes. Oldest bike I saw on the road was a 1950s cruiser. Quite a few 70s 10 speeds. And a young couple suffering on a pair of full suspension Huffy mtbs with 24" knobs. Bents, recumbent trikes, tandems, a triplet or two, trail a bikes, even a 4 wheel bike (slow). And the infection of ebikes is growing.
PS, this year was pretty easy riding. Tail winds about 90% of the time. No rain. Temps about 80f every day. Next year will be the 50th Ragbrai so I expect a big turnout.