I had a section of off road about 10 miles out from Northallerton. I'd done the route on cycle.travel which is usually quite good and showed a Tarmac cycle track for this section. (Must look at osm source data and correct it) It turned into farm yards, floods, mud, green lanes and punctures. I escaped by a bridge and hiking to a lane. The puncture was rear on tubeless. The sealant had dried out and therefore didn't seal. The spare tube I carry for when the tubeless fails (it hadn't for last 5 years), had been fitted to my new recumbent build. So no tube to sort it out. So I rode 4 miles or so on a flat rear till Andy Clarkson and some other VC167 members came past. In response to a passing alright I asked after an inner tube. With tubeless tyre carefully checked to embedded debris, donated inner tube fitted; I was then able to proceed at normal pace to Northallerton.
So there you go, but I wouldn't call the above epic, just frustrating so close to the destination.
Ridiculous amounts of alcohol consumed with members of Four Corners Audax. I was on the cider which is not my usual drink but I've developed a recent liking for the cloudy variants.