You can now do your usual search for results with various filters (on rider, region, dates, ride type etc.). But now, once the results are displayed, you can then dynamically filter those results. Just click on "filter results" to expand:

and you'll see:

It gives you a great way to slice and dice the result set you're interested in, in a quick way.  Thanks to the Web Team's Charlie Martin for coming up with this helpful feature!