Airway Heights -	Extreme Motorsports Park has an MX track consisting of mostly table tops.
Boise -	Owyhee Motorcycle Club has an MX track and a short track. Check with OMC before you head there. It's hard to tell if they only offer racing, of if they also offer riding open to the public.
Clarkia -	Fossil Bowl MX has an MX track and a pee-wee track. The MX track is said by Fossil Bowl to be one of the most technical MX tracks in the nation, making it along the lines of a Supercross track. The track features two-way riding and an "eat it or jump it" jump, which has a by-pass route for less skilled riders.
Mountain Home / Glenn's Ferry -	White Knuckle Racing operates two of South-West Idaho's MX/SX tracks, located in Mountain Home and Glenn's Ferry.
Payette -	Clay Peak has an MX track that the Clay Peak websites lists as over 2 miles long featuring an "awesome 600 foot start hill, with a wicked S turn on top of the hill."
Kuna -	Pleasant Valley Raceway has three MX tracks and a pee-wee track. The main track has lights and a grandstand.
Kimberley -	Rock Creek Race Track has an MX and Supercross-style track.
Salmon -	Sacajawea Motorsports Park - MotoTips.com reports that Sacajawea provides a large natural terrain MX track, as well as a mini track.