Here's a list of books for kids who like adventure stories, sorted by grade level:
My Side of the Mountain by Jean Craighead George
A young boy relates his adventures during the year he spends living alone in the Catskill Mountains including his struggle for survival, his dependence on nature, his animal friends, and his ultimate realization that he needs human companionship.
The Mysterious Benedict Society series by Trent Lee Stewart
After passing a series of mind-bending tests, four children are selected for a secret mission that requires them to go undercover at the Learning Institute for the Very Enlightened, where the only rule is that there are no rules.
Boston Jane trilogy by Jennifer Holm
1) Boston Jane: An Adventure
Schooled in the lessons of etiquette for young ladies of 1854, Miss Jane Peck of Philadelphia finds little use for manners during her long sea voyage to the Pacific Northwest and while living among the American traders and Chinook Indians of Washington Territory.
Island trilogy by Gordon Korman
Six kids, Nick, J.J., Will, Lyssa, Charla, and Ian, are thrown together against their will on a small boat that will make a one-month journey on the Pacific Ocean. These six totally different kids have to learn to work together to survive a vicious storm and a shipwreck that leave them stranded in the middle of the ocean with no food, no water, and almost no hope for survival.
Kensuke's Kingdom by Michael Morpurgo
When Michael is swept off his family's yacht, he washes up on a desert island, where he struggles to survive--until he finds he is not alone.
Kidnapped trilogy by Gordon Korman
1) The Abduction
Aiden works with the FBI in order to rescue his sister Meg, who was kidnapped.
The Volcano Disaster by Peg Kehret
When an "Instant Commuter" transports him to Mount Saint Helens during its eruption, twelve-year-old Warren cannot get himself back to his own home in his own time.
Alex Rider series by Anthony Horowitz
After the death of the uncle who had been his guardian, fourteen-year-old Alex Rider is coerced to continue his uncle's dangerous work for Britain's intelligence agency, MI6.
Bloody Jack series, by L. A. Meyer
Reduced to begging and thievery in the streets of London, a thirteen-year-old orphan disguises herself as a boy and connives her way onto a British warship set for high sea adventure in search of pirates. Life as a ship's boy aboard HMS Dolphin is a dream come true for Jacky Faber. Gone are the days of scavenging for food and fighting for survival on the streets of eighteenth-century London. Instead, Jacky is becoming a skilled and respected sailor as the crew pursues pirates on the high seas. There's only one problem: Jacky is a girl. And she must use every bit of her spirit, wit, and courage to keep the crew from discovering her secret.
Crispin series by Avi
1) The Cross of Lead
Falsely accused of theft and murder, an orphaned peasant boy in fourteenth-century England flees his village and meets a larger-than-life juggler who holds a dangerous secret.
Escaping the Giant Wave by Peg Kehret
When an earthquake creates a tsunami while thirteen-year-old Kyle is babysitting his sister during a family vacation at a Pacific Coast resort, he tries to save himself, his sister, and a boy who has bullied him for years.
For Freedom: The Story of a French Spy by Kimberly Brubaker Bradley
A novel based on the experiences of Suzanne David Hall, who, as a teenager in Nazi-occupied France, worked as a spy for the French Resistance while training to be an opera singer.
Hatchet series by Gary Paulsen
After a plane crash, thirteen-year-old Brian spends fifty-four days in the Canadian wilderness, learning to survive with only the aid of a hatchet given him by his mother, and learning also to survive his parents' divorce.
High Seas trilogy by Iain Lawrence
1) The Wreckers
Shipwrecked after a vicious storm, fourteen-year-old John Spencer attempts to save his father and himself while also dealing with an evil secret about the English coastal town where they are stranded.Island of the Blue Dolphins by Scott O'Dell
Left alone on a beautiful but isolated island off the coast of California, a young Indian girl spends eighteen years, not only merely surviving through her enormous courage and self-reliance, but also finding a measure of happiness in her solitary life.
Stowaway by Karen Hesse
A fictionalized journal relates the experiences of a young stowaway from 1768 to 1771 aboard the Endeavor which sailed around the world under Captain James Cook.
Three Days by Donna Jo Napoli
While driving in the Italian countryside, eleven-year-old Jackie's father suddenly collapses at the wheel. Fear for her father's life quickly turns to terror when two Italian men kidnap her and drive to their remote home in the countryside. Jackie soon discovers that her captors are actually a family, plagued by a mysterious secret. Award-winning novelist Donna Jo Napoli has created a haunting thriller that gives life to Jackie's utter desperation and determination to escape.
Tucket series by Gary Paulsen
In 1848, while on a wagon train headed for Oregon, fourteen-year-old Francis Tucket is kidnapped by Pawnee Indians and then falls in with a one-armed trapper who teaches him how to live in the wild.
Airborn by Kenneth Oppel
Matt, a young cabin boy aboard an airship, and Kate, a wealthy young girl traveling with her chaperone, team up to search for the existence of mysterious winged creatures reportedly living hundreds of feet above the Earth's surface.
East by Edith Pattou
A young woman journeys to a distant castle on the back of a great white bear who is the victim of a cruel enchantment.
Tunnels series by Roderick Gordon
When Will Burrows and his friend Chester embark on a quest to find Will's archaeologist father, who has inexplicably disappeared, they are led to a labyrinthine world underneath London, full of sinister inhabitants with evil intentions toward "Topsoilers" like Will and his father.
Julie of the Wolves, by Jean Craighead George
While running away from home and an unwanted marriage, a thirteen-year-old Eskimo girl becomes lost on the North Slope of Alaska and is befriended by a wolf pack.