The best source that i rely on is cheaper than dirt .com on the right hand side they have a list that has gun shows on it you can click on and add ur zip code or state and city and they show you all within however many miles you want.
Crossroads of the West hits South Towne in Sandy every few months. I go every so often just to look around. Guns seem a bit overpriced but accessories and some supplies are convenient. Calendar | Crossroads of the West Gunshows
FWIW, the one this week end is the Rocky Mountain Gun Show: Rocky Mountain Gun Shows
I wish i wasn't working this weekend, I haven't been to this one.
In Ogden there is one every so often at the Golden Spike Event Center. Kinda small, but the selection was pretty decent considering. A lot less chaotic. (I couldn't make the calendar work on the web site.)
Greg USAF Retired NRA Life Member "We've replaced what was an exceptional country with a tolerant country. " Greg Gutfeld