Great Divide Mountain Bike Route - 4: Silverthorne, Colorado - Platoro, Colorado - 317 Miles

This section of the Great Divide Mountain Bike Route follows the paved Blue River trail through bustling Summit County, the most urbanized area on the entire route, then crosses the Continental Divide at Boreas Pass and descends into the broad, windswept basin known as South Park.

South of the small town of Hartsel it climbs back into the mountains, then drops into Salida, following a twisting dirt road that offers arresting views across the Arkansas River Valley of the high Fourteeners of the renowned Collegiate Range. South of Cochetopa Pass-the seventeenth crossing of the Continental Divide since the Canadian border- the terrain turns more southwest canyon-country in nature, and Hispanic influences are obvious in the small settlements near the route. The high San Juan Mountains south of Del Norte, meanwhile, provide astonishing contrasts: the route leads directly through the severely scarred Summitville mining district. But just around the bend await some of the prettiest high-country glades and meadows found in the entire Rocky Mountain region.

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Adventure Cycling maps are created by cyclists, for cyclists, and they are some of the best available for those in search of discovery and adventure in North America. The maps reflect the association's research as well as suggestions from thousands of cyclists who have explored the Adventure Cycling Route Network. Adventure Cycling develops the best cross-country, loop, coastal, and inland cycling routes available, with turn-by-turn directions, detailed navigational instructions for the tricky sections, and elevation profiles in the high country.

The maps are waterproof and designed to fit in a handlebar-bag window or jersey pocket. The maps provide information specifically for cyclists: the location of bike shops, sources for food and water, and listings of overnight accommodations including camping facilities, small hotels, and cyclists-only lodging.