runs.space is curated by hand, one profile at a time. That's slow on purpose — a directory anyone can flood is a directory nobody trusts, and the whole point here is that the listings are real things actually being run by the people listed next to them.
Listing is free and stays free. If you'd rather have a fully designed page on your own subdomain (e.g. yourname.runs.space), email hello@runs.space instead.
One account, no password — sign in with a link sent to your email. First you create your profile, which goes to review; once it's approved, you can come back and add what you're running, any time.