I was thinking about organizing a vintage ride this spring (unsupported, I have no resources). My first instinct was to make it a metric because I don't concider those too difficult. It has dawned on me that a metric isn't too difficult on a modern bike and I am new to vintage and have no experience riding a vintage bike for any distance.
Would a metric be too long or just about right? If it is too long, how far would you recommend? The route would be pretty flat, I do live in Illinois. I can throw in a couple of short (about a half mile) but steep hills, but I can make those an optional route. I would also like the ride open to all bikes, vintage and modern.
Your thoughts and experience will be appreciated.