@Marlintailcycle wrote: I am surprised not to find a cycling channel or app. Why?
Because no one with the ownership or permission to stream such content has created a channel. Roku does not create the channels (with two exceptions), so it's up to third party developers or content owners to do so.
Dan Roku Stick (3600), Ultra (4640), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.