Bikes are banned from all hiking trails in the park, and, on the paved roads below; the problem is safety -- there are huge RVs careening about, and some roads have only narrow shoulders. Construction has widened Teton Park Road a bit, but traffic on it is still heavy. Instead, road bikers should try Antelope Flats, beginning at a trail head a mile north of Moose Junction and going east. Sometimes called Mormon Row, this paved route crosses the flats below the Gros Ventre Mountains, past old ranch homesteads and the small town of Kelly. It connects to the unpaved Shadow Mountain Road, which actually leaves the park and continues into national forest, climbing through the trees to the summit. After a total distance of 7 miles and an elevation gain of 1,370 feet, you'll be looking at Mount Moran and the Tetons across the valley.
Mountain bikers have a few more options: Try Two Ocean Lake Road (reached from the Pacific Creek Rd. just north of Moran Junction) or the River Road, a 15-mile dirt path along the Snake River's western bank. Ambitious mountain bikers might want to load their overnight gear and take the Grassy Lake Road, once used by Indians, west from Flagg Ranch on a 50-mile journey to Ashton, Idaho.
Books and maps with bicycle routes are available at visitor centers, or from Adventure Sports, at Dornan's in the village of Moose (tel. 307/733-3307), which is inside the boundaries of Grand Teton National Park. You can also rent mountain bikes here, $25 for a full day and $18 for half a day, as well as road and performance bikes for a few dollars more. Children's bikes are also available for $14 a day.
