Thinking about doing a BBG 2000 ... Omaha to Sioux Falls on I-29 North, then I-90 West across SD to Bozeman, MT, flipping around, and then I-90 East to the I-25 split, I-25 South to Cheyenne, WY, and I-80 east back to Omaha. Googlemaps says I can do it in 30 hours ... but I'm wondering about fuel on I-90 and I-25 in MT and WY. I-90 I know well enough from Sioux Falls to Rapid City, and I-80 is so heavily trafficked by trucks that fuel won't be an issue. Picking that route because of the lack of extremely high mountain passes, 80mph speed limits, few cities, and propensity for drier weather. Any advice? Thinking about the Friday just before 4th of July weekend. My bike only goes about 100 miles comfortably on a tank, 130 miles on average ... but pushing 130 miles in mountains, wind, high altitude .....