San José de Maipo is the gateway to the Cajón del Maipo, the deep river canyon that runs from the edge of Santiago into the high Andes. Only about an hour from the capital's sprawl, the town sits at roughly 970 metres, where the valley narrows and the air turns cooler and drier. Its centre is a quiet cluster of adobe and whitewashed houses with tiled roofs, a handsome church and a plaza shaded by old trees, and weekend visitors from the city fill the bakeries and restaurants. The Maipo River, brown with snowmelt, rushes below.
The valley has a long history of mining, and silver and copper were worked in the mountains above the town from the colonial period. The road that follows the canyon, Route G-25, climbs past villages such as San Alfonso and El Melocotón, where orchards and weekend cabins line the river, and onward to Baños Morales and the Monumento Natural El Morado, a protected glacier valley. Higher still, a road of gravel and sharp bends leads to the Embalse El Yeso, a turquoise reservoir built in the 1960s that supplies much of Santiago's drinking water, ringed by bare peaks.
Riding here is spectacular, though the surface changes as you climb. The lower valley is paved and busy with weekend traffic, and the road narrows past the town, with tight bends, rockfall risk and sudden gusts. The upper reaches to the reservoir are gravel and dust, demanding care, especially after rain or snowmelt. Weather in the mountains shifts fast, and the road can close in winter snow. Start early to avoid the weekend crush, and bring warm layers.
Food is part of the pleasure: empanadas de pino, grilled meats, fresh bread and local honey, all easy to find along the main street. Fuel is available in town, but fill up in Puente Alto, about twenty kilometres back, to be safe. The Andes rise around you, and in clear weather snowfields glitter on the ridges. Autumn brings gold poplars along the river, and spring brings blossom, with fewer visitors than summer.