A bit late, but I have a few more rides to report.
CIRREM 2/25 - 100K+ on my fatbike. 4000 feet of climb. 5:37 moving time. One of the stupidest things I've done to my body in a long time. :)
Gent's Race 4/7 - 66 miles in 4:43 moving time. Lots of fresh gravel and a headwind for the last 15 miles. Great team of guys to ride with for the day
Gravel ride 4/21 - 100K. Rode most of the CIRREM course with a couple of other guys. Beautiful day.
Training Century - 5/20 - 100.2 miles, 4600 feet of climb. 6:10 moving time. LOTS of pretty areas south and west of Winterset. The detour off my normal route to go through Pammel State Park yielded a couple of awesome climbs. Pammel Park would be worth of a gravel bike pack from DSM. It would be about 35 or 40 miles depending on where you started.
Looking forward to Dirty Kanza and Chequemegon 100 in June!