Unbound Gravel, formerly known as the Dirty Kanza, is an event comprising gravel racing covering various distances held annually during the late spring in the Flint Hills region of the Great Plains around Emporia, Kansas, United States. The race's organizers refer to the 200 miles (320 km) mile race as the "World's Premiere Gravel Grinder", and ranked as one of the top gravel bike races. Winners are awarded a belt buckle. Starting and ending in Emporia, the routes runs along rural roads in the Flint Hills of east-central Kansas. In some years the temperature on the route has exceeded 100 °F (38 °C), while other years have seen rain or hail. It is not uncommon for rain to turn some dirt roads into "mud roads". More information...
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