Velofacts generates public twitter lists for all world tour and most 2.1 pro cycling races. See here for the current pro cycling events lists.
Lists are generated mostly one or two days before the event starts and will be deleted when they are finished.
Pro cyclists from the world tour and a selection of pro continental cyclists
2014 World Tour and Pro Continental teams
A collection of cycling news accounts
Cycling Journalists, Team managers, Photographers, Bloggers, etc…
Cyclists, Teams, websites etc…