I thought that KOM's were out of my reach earlier in the year too. Got a few, but they dont count as I created them and only a handful of people on them. I created them when I started, as a way to compare my rides to myself later on. I am thinking of deleting them now, as dont follow those routes much anymore...and my VeloViewer score is taking a kit. lol.
Went out last night and managed to average 18.8 mph over 32.1 miles, albeit with only 750ft of elevation. Got a 5th place on one of the two climbs and really pleased with that. Only 16 seconds off the top spot, so going to go all out to try and get it at some point. I would never have thought about the KOM had i not been so close.
I am relatively new to cycling, with only 750 done so far and no sport being done for 10 yeears, so anybody who thinks that a KOM is not possible can think again!