My fitness level must be increasing, or maybe I was just having a freakishly energetic day?
Ended up cycling 40km today (ie around the length of the original M50, that’s excluding the Port Tunnel which is now part of the ring road).
It included the 6.4km or so of a commute to DCU in the morning, then out to the Howth Head in the early evening and back to town. Surprising thing is I went back into town to see a film after getting home from the cycle, no collapsing on the armchair (nor half falling a sleep in the cinema)!
In fact, with the round trip to the cinema included, you could add 4.6km to that.