core4 leaves no surface untouched: Gravel, pavement, lumpy farm access lanes, grassy lawns, rooty singletrack, even a bit of cyclocross - and, according to yours truly, the hardest 50 miles ever! Dive into this fun, interesting, exciting and challenging ride with Dave and his special guest Eria Sabiiti - the YouTube superstar on his Iowa Gravel Gang channel! Together we'll take you from the start to the finish of the very last rider to complete the 100=mile distance! We'll take you on the leg-draining singletrack, we'll talk to riders like course designer and two-time winner Nate Kullbom, 50mile winner Cassandra (Sandy) Kestler, BIKEIOWA founder Scott Sumpter and many many more! Got FOMO? Sign up next year! www.core4.bike Also.. ...