Divide racers must not only be conditioned to endure weeks of consecutive 16+ hour days in the saddle, they need to bring other skills to the trail. The Route is unmarked and circuitous, requiring navigational acumen. It travels through remote backcountry with Grizzly and Mountain Lion density. Intervals between services are frequently 100+ miles and demand calculated food/water resupply - or else. Riders must also find shelter each night or bivouac trailside. In minutes the Rockies' dynamic mountain weather can wreak havoc on route surfaces, skewing even the most near-term travel projections. Of course, it wouldn't be a grand tour without the geopolitics of negotiating the, albeit lower-security, international border crossing at Port of Roosville, Montana.