20 Free Adventures at National Parks

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two little kids boys and father making air boat tour in Florida wetland swamp
Photo credit: Romrodphoto/shutterstock

Budget-conscious travelers love national parks, but many don't realize how many free, unique activities they offer -- beyond brief ranger-led talks or walks. These 20 enticing adventures give a taste of what's possible at no cost during your next national park vacation.

Alaska brown bear mother and cubs on the bank of the Brooks River lagoon
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With a population of about 2,200 grizzlies, Katmai National Park in Alaska offers some of the best bear-watching anywhere. The Brooks Camp area has three viewing platforms where visitors can safely watch bears fish for salmon along the Brooks River. Peak viewing times are July and September.

a man and a woman finding a geocache in the forest
Photo credit: Tyler Olson/shutterstock

Use a GPS to explore Maine's Acadia National Park on a unique hunt for EarthCaches, hidden clues that teach visitors about their surroundings. The program takes four to six hours to complete, and the search is confined to trails, roads, and other hard surfaces.

Synchronous Fireflies in the Great Smoky Mountains
Photo credit: Love Shuffle by Spencer Black (None)

Fireflies in Great Smoky Mountains National Park in North Carolina and Tennessee put on a dazzling mating-display light show for about two weeks in late May to mid-June (viewing dates are announced in late April). While viewing is free, visitors must enter a lottery to get a parking pass, and the passes and shuttle buses to the viewing area require a nominal fee.

canoe tour in Congaree National Park
Photo credit: IMG_0844 by David Miller (None)

Float down Cedar Creek on a leisurely four-hour canoe tour with rangers in South Carolina's Congaree National Park. Watch for bald eagles and enjoy the dense old-growth bottomland forest, the last of its kind in the country. Reservations must be made in advance online, and groups are limited to 12 people. Children must be at least 6 years old to participate.

Paleontology Tour in Death Valley National Park
Photo credit: Descent into the Valley by coolislandsong24 (None)

Ranger-led paleontology tours offer close-up views of fossilized animal tracks in a part of California's Death Valley National Park that is typically off-limits. The 7-mile round-trip hike is strenuous, and no kids under 10 are allowed. Hikes are limited to 15 people, with spots filled via a lottery.

Slough Slog in the Everglades
Photo credit: 2012 Florida Everglades Trip by Historic Rivers Chapter (None)

Not afraid to get wet? Go off trail on a guided hike through some of Everglades National Park's famous sloughs, perhaps better known as swamps. Participants must wear long pants and sturdy closed-toe shoes to participate. Groups are limited to 15 people 12 and older; reservations are required.

Hot-Spring Soak in Big Bend
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A short hike leads to a hot spring that bubbles up near the Rio Grande in Texas' Big Bend National Park. Early settlers thought the dissolved mineral salts in the water had healing powers. Visitors can test the theory by taking a soak in the 105-degree pool in the foundation of an old bathhouse.

Related: 13 Great Places to Go Skinny-Dipping

Bat Flight Program at the Carlsbad Caverns
Photo credit: Courtesy of nps.gov

On summer evenings, thousands of bats zoom out of Carlsbad Cavern in New Mexico to begin their nightly hunt for food. Visitors can watch the spectacle and learn more about the bats during a ranger-led talk. Start times vary depending on the sunset.

Tide Pooling at the Channel Islands
Photo credit: Courtesy of nps.gov

Visitors should keep an eye out for urchins, barnacles, sea stars, anemones, and scores of other creatures in the vibrant tide pools of the Channel Islands, off the coast of California. The park recommends at least six sites for tide pooling, and visitors can learn more during ranger-led talks at the Ventura visitor center.

Star Party at the Grand Canyon
Photo credit: Courtesy of nps.gov

Stargazers flock to Grand Canyon National Park in Arizona every June for a weeklong star party with nightly slide shows, telescope viewing, and ranger-led constellation tours. No registration is required, and there are observation sites on the north and south rim of the canyon.

Related: 15 Best Places to See the Northern Lights on a Budget

children sit near the Yellowstone River and look at the steaming geysers in Yellowstone National Park
Photo credit: IrinaK/shutterstock

Visitors who want to explore Yellowstone's backcountry with an expert can participate in a guided five-hour Ranger Adventure Hike to such places as the Yellowstone River, Avalanche Peak, Garnet Hill, and Lone Star Geyser. Groups are limited to 15 or 20 hikers and reservations are required.

Related: 50 Affordable Vacations to Add to Your Bucket List

Icefield Hike at the Kenai Fjords
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Though not for the faint of heart, a ranger-led hike in Kenai Fjords National Park in Alaska offers unparalleled views of the 700-square-mile Harding Icefield. This eight-hour trip includes substantial elevation gains and is designed for more experienced hikers. It's offered Saturdays in July and August.

Full-Moon Hike at Bryce Canyon
Photo credit: Courtesy of nps.gov

Bored with day hikes? During full moons, rangers lead visitors on 1- to 2-mile nighttime hikes in Bryce Canyon National Park in Utah, offering a spooky perspective on the rugged landscape. The hikes are free, but tickets are distributed via lottery during more popular months. Hiking boots or shoes are required, and kids under 6 are not allowed.

herd of mother elk with spotted newborn fawns and calves in brush field in the Grand Teton
Photo credit: TheGreenMan/shutterstock

During fall, wildlife such as bears, elk, and bison are on the move in Wyoming's Grand Teton National Park. Bring binoculars and team up with a ranger for a three-hour wildlife caravan offered daily in September. Each caravan is limited to 10 vehicles, so reservations are required.

group hikers with backpacks and skis walk on a snow-covered forest in the mountains
Photo credit: frantic00/shutterstock

True to its name, Glacier National Park in Montana can be a formidable place in the winter, with many activities off-limits. But rangers lead two-hour snowshoe walks on winter weekends, perfect for visitors who want to appreciate the park while it's quiet and uncrowded. Participants can bring their own snowshoes or rent.

woman using a GPS in the forest on a camping hike
Photo credit: Tyler Olson/shutterstock

From April through November, visitors to Ohio's Cuyahoga Valley National Park can participate in "quests" following rhyming clues that help tell the natural and cultural history of the area -- no GPS required. At the end of each quest, participants find a hidden box with a completion stamp and a log to sign. In all, there are 40 quests along the Ohio and Erie Canalway.

happy woman mountain hiker taking pictures in Yosemite waterfall
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Shutterbugs can get a better feel for landscape photography during camera walks through Yosemite National Park in California. Led by staff photographers with the Ansel Adams Gallery, walks are offered four days a week, limited to 15 participants. Topics may include camera basics and Adams' famed work in the park.

Related: Amazing Places to Take a Selfie in All 50 States

Hula dancers performing
Photo credit: Jose Gil/shutterstock

Visitors to Hawaii Volcanoes National Park can take part in free cultural activities such as ʻIke Hana Noʻeau, which focuses on traditional Hawaiian handcrafts and invites visitors to take part, and Nā Leo Manu, or "Heavenly Voices," an evening concert series that introduces participants to Hawaiian music and dance, including hula.

Denali National Park maintains a kennel of sled dogs which during the summer provide demonstrations for park visitors
Photo credit: NancyS/shutterstock

Half-hour demonstrations by Denali National Park rangers give visitors unique insight into how teams of sled dogs work together to traverse the frigid Alaskan wilderness. Tours of the park's kennels are also available. Demonstrations are offered May through September, with three daily in June, July, and August.

Kayak Tour at the Redwoods National Park
Photo credit: lewisandclark/flickr.com

If water levels allow, rangers lead kayak tours under towering trees on the scenic Smith River in Redwoods National Park, in northern California. The two-hour floats are offered twice daily on Fridays and Saturdays during the summer. Paddling gear is provided. In-person sign-ups are required, and kids under 10 aren't allowed.

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