This mega event takes place over 3 successive weekends - February 24 through March 11
There's a ton of stuff going on over the next few weekends, including fishing seminars, rod trade-ins, daily specials and fly tying exhibitions by renowned local anglers. Be sure to stop by the Cherry Creek Anglers and West Denver TU tables and say hello.
Here's a link to their website, where you can find all the scheduled events.
Here's a link to a flyer listing all the participating tyers.