Just joined the forum. I cycle to work. I cycle for pleasure mainly on dirt tracks and very quiet back roads on a hybrid or adventure road bike. Usually ~2hr, ~25-mile trips at the weekends with the occasional 1-2 day trip of 100km/day with pub lunch usually on the way. Average speed including breaks something like 12mph. Thinking of doing an audax, http://www.aukweb.net/events/detail/19-268/ interested to hear if others have experience of these.