Drive 7 miles across the Great Salt Lake and the whole world changes on Antelope Island

Antelope Island’s wild side is 41 miles from Salt Lake City

You drive seven miles across a causeway over the Great Salt Lake, and by the time you reach the other side, Salt Lake City feels like it belongs to a different world.

Antelope Island covers 28,000 acres and stretches 15 miles from one end to the other. Bison roam across open grassland.

Rocks beneath your feet formed before complex life existed on Earth. At night, the Milky Way cuts straight across the sky.

All of it sits less than an hour from one of the most populated corners of the West.

Kit Carson once shot a pronghorn here

John C. Fremont and Kit Carson were among the first non-Native Americans to set foot on this island, back in 1845. The story goes that they named it after shooting a pronghorn antelope during their visit.

Long before them, people lived and moved across the island for thousands of years, something the archaeological record makes clear.

By 1848, Fielding Garr had set up a ranch here for the LDS Church’s cattle operation, and the island stayed in private hands until Utah bought it and turned it into a state park in 1981.

A bison herd that saved a species

About 550 to 700 bison roam the island year-round, and every one of them descends from just 12 animals brought here in 1893. At that point, fewer than 1,000 bison were left in all of North America.

The herd that grew from those 12 animals now carries a distinct genetic heritage that wildlife managers use in breeding and conservation programs across the country.

Today it ranks among the oldest and largest publicly owned bison herds in the United States, and you can see them from your car window or out on the trails.

Watch rangers chase 600 bison on horseback

Every fall, park rangers and volunteers on horseback ride out to round up the entire herd. They push the bison from the southern end of the island all the way to holding pens on the north end.

Once corralled, each animal gets vaccinated, weighed and measured, with blood and DNA samples taken for ongoing genetic research.

The roundup also gives managers a chance to auction off excess animals and keep the population at a size the island’s land and water can support.

It is one of the largest bison roundups still done on horseback in the country.

250 bird species plus bighorn sheep and bobcats

Pronghorn antelope came back to the island in 1993 after a long absence, and you can spot them in many areas now. Bighorn sheep, mule deer, coyotes and bobcats also call the island home.

The Great Salt Lake ecosystem draws about 12 million migratory birds each year across 339 species, and the island itself supports more than 250 of them. Bald eagles move in during winter.

Burrowing owls, American white pelicans, avocets and peregrine falcons turn up throughout the year. The causeway alone, with its shallow water on both sides, pulls in thousands of shorebirds.

Six miles up to the top of Frary Peak

Frary Peak tops out at 6,596 feet and stands as the highest point on the island. The trail to the summit runs about 6.6 miles round trip with around 2,100 feet of climbing.

It is the one spot on the island where you can see every side of it at once, with the Great Salt Lake spreading out in every direction and the Wasatch Mountains rising to the east. Bison and pronghorn graze the slopes below.

Raptors circle the ridgeline. Give yourself a full morning for this one.

45 miles of trails for hikers, bikers and riders

The island has more than 45 miles of trails open to hikers, mountain bikers and horseback riders. Buffalo Point Trail is a short walk with views of the lake and long sunsets over the water.

Lakeside Trail follows the shoreline for about six miles with almost no elevation change, so it works for most fitness levels.

If you want a full day out, the Elephant Head and Mormon Rocks Loop stretches nearly 14 miles. Dogs on a leash are welcome on all of them.

The oldest ranch house in the western United States

The Fielding Garr Ranch sits on the island’s southeastern end, built next to one of its strongest natural springs.

The original adobe ranch house dates to the late 1840s, making it one of the oldest standing structures in the western United States.

You can walk through the ranch house, the blacksmith shop, the shearing barn, the corrals and the spring house.

The ranch ran continuously from 1848 to 1981, moving between cattle and sheep operations across those decades.

It’s listed on the National Register of Historic Places, and the spring-fed trees around it draw birds all year.

Rocks here formed before the Grand Canyon’s basement

The island sits on some of the oldest exposed rock in the region.

The Farmington Canyon Complex, a mix of metamorphic and igneous rock, goes back as far as 2.5 billion years. That’s older than the basement rocks at the bottom of the Grand Canyon.

At the other end of the timeline, tufa limestone formed just 10,000 to 15,000 years ago when ancient Lake Bonneville covered this entire valley.

You can see exposed gneiss along hiking trails and near the Fielding Garr Ranch, where the rock cuts through the hillside in dark, folded bands.

Float on water saltier than the ocean at Bridger Bay

The Great Salt Lake runs several times saltier than the ocean, and that salinity changes what your body does in the water. You float.

Not with effort, just automatically, the way you would in the Dead Sea.

Bridger Bay Beach on the island’s north end has white sand and rinse-off showers, so you can get into the lake and wash off after. The mineral-rich water tends to leave skin feeling smoother than expected once you rinse.

It is one of the few places in the country where you can have that experience without leaving the continent.

The Milky Way shows up on a Tuesday night in October

Antelope Island earned its International Dark Sky Park designation in 2017, and the location earns it.

The park sits close enough to Salt Lake City to be convenient but far enough across the water that city light fades before it reaches the island.

On clear nights, you can see the Milky Way, planets and distant galaxies without a telescope. The park runs regular star parties where astronomers set up telescopes and walk you through what you’re looking at.

Buffalo Point and Frary Peak are the top spots, with the lake reflecting the sky below you.

Camp, ride horses and come back more than once

One day is not enough to cover everything here. The island has campgrounds at Bridger Bay with sites for tents, RVs and groups, so you can stay for sunset and still be out on the trails by sunrise.

Horseback riding tours run along the island’s trails if you want to cover more ground. Road cyclists use the paved routes, and mountain bikers have access to most of the dirt trails.

The park holds events throughout the year, including the fall bison roundup and dark sky programs, so the island gives you a reason to come back in a different season.

Plan your visit to Antelope Island State Park, Utah

To get there, take Interstate 15 to Exit 332, then head west on Antelope Drive for seven miles to the park entrance. From there, the causeway carries you another seven miles across the lake to the island.

The park opens daily at 6 a.m. and closes at 8 p.m. Entry runs $15 per vehicle for up to eight people. The visitor center is temporarily at the marina while a new one goes up.

Water stations on the island are limited, so bring more than you think you’ll need.

This article was created with AI assistance and human editing.

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