To find out what stairs you can currently challenge someone in, first go to the Main Stairs Page, then click on "Show your stairs only" link. The ones in BOLD are ones you can make a challenge in.
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Subject: Re: Question: while Retired, how can I see my position?
furbster: yes, it just shows me all my stairs, and in each one I can see that I am retired, and all others positions. I have un-retired now, so it doesn't matter anymore at this time to me. But it would be a nice addition to display my level while I am retired.
(hide) If you don't want other users to know what you are doing you can change into cloak mode in Settings (paying members only). (pauloaguia) (show all tips)