Django has been kind enough to build spreadsheets to record mileage and some of us have entered data, so here's a bit of a league table for 2015 and so far in 2016.
2015
In 2015, Ferret covered the most miles (21,758) — a measly 333 ahead of Haystack (21,425). Topstroke came in third (20,400).
On a CB1100, Haystack was the clear winner (15,525) just ahead of Django (15,475), KennyW (10,825) and Pterodactyl (10,171).
Topstroke covered the most miles on bikes other than the CB1100 with a cracking 20,400 followed by TINK with a respectable 17,503 and the redoubtable Ferret (12,184).
The observant will note that Topstroke covered not a single mile on a CB1100.
2016
A month and 9 days into 2016, and at the most recent posting, nvbobr (1,883) is 187 miles clear of the Ferret (1,696 miles). Husky385's a credible third on 1,084.
nvbobr and husky385 lead the field in miles covered on a CB1100 with bokobob a fair way astern on 517.