Here are a half dozen episodes from the RAGBRAI Route Inspection PreRide.
Route Inspection Day 1: Covered in Gravel
Pre Ride Podcast Day 2: Ladies Take The Road and Mic
RAGBRAI Pre-Ride Pod 3: Cycling Power in Jack Trice Stadium
RAGBRAI Pre-Ride: Hills, Heat, & Headwinds
RAGBRAI Route Inspection: Century Day
Route Inspection Day 6: Add some headwind on your TREK to HILLS