Intermediate riders can take the 9-mile White Rock Bay Loop, which follows Antelope's backcountry trails. Beacon Knob, at the loop's high point, offers sweeping views in all directions. The descent back to the trailhead goes through wide turns on fast-paced doubletrack. Add still more miles by climbing up to Split Rock Bay Overlook and following the 3.3-mile Elephant Head Trail out and back. It ends at a cliff edge viewpoint of crescent-shaped Split Rock Bay below. The 5-mile Split Rock Bay Loop follows the terraced shoreline of ancient Lake Bonneville — predecessor to the Great Salt Lake. The trail then weaves through massive boulders and cliffs exposing rocks that are 2.7 billion years old — a time long before the first bugs inhabited the premedical seas. The path drops dramatically on hand-built trail through switchbacks to the lake's shore then rises steeply to the loop's beginning.

NOTES: There is an admission fee to the Island. Among other things, the island offers camping, picnicking, a museum and access to the buffalo pens. Along the eastern shoreline is the restored Fielding Garr Ranch, which includes a ranchhouse, well house and blacksmith shop.

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Antelop Island

Location: Antelope Island

Trail: Backcountry Trail System

Distance: 20 miles of trails

Difficulty: Intermediate-Advanced

Open to: Biking, hiking, equestrian

Type: Out-and-back and loops