I'm too late to the party, but anyway: Challenge Furai 26": chain guard to rear light: 188cm, chain guard to back of rear wheel: 196cm.
I'm a fan of dangly spaces, but am a 5'10" male in his thirties and appreciate your objections. Probably the best way is the German Intercity way: about 2/3 to 3/4 is normal bike space, and a small amount is dangly. My bike often is a bit too long to properly fit into Dutch bike spaces, but when I put it upright it takes up no space at all. The seat width is 26cm, the steerer 27cm. In busy trains I have put it upright, using a lashing to secure the front wheel to a solid handle near the doors in between carriages.
The widest bit of my bike is the Radical L top bag, but I take that off on trains.