I'm down in the 50 - 100 milers.
A round trip commute for me is about 28 miles, but I generally only cycle one way, and some days I only cycle either end of a rail commute. I could do better, but hey I'm still in my first year of cycling
Richard
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Currently riding an MTB with a split personality - commuting, touring, riding for the sake of riding, on or off road :)