This page lists races that might be of interest to the TUNA community. They aren't included in the TUNA race calendar, since few TUNA members participate in them, but if you're traveling and are looking for an event, you might want to check them out.
The Great Ski Race
30k point-to-point race at Lake Tahoe, CA. Early March.
http://www.thegreatskirace.com
Steamboat Springs, CO, races
There are several events throughout the winter in the Steamboat area.
http://www.steamboatxcski.org