"My goal is to raise $1 million, so that one day the boys with Duchenne will hike with me," Tyler Armstrong tells PEOPLE Eleven-year-old Tyler Armstrong of Yorba Linda, California, is climbing the ...

While many of his classmates will spend their winter holidays at home with family or maybe at best on the ski slopes around Lake Tahoe, nine-year-old Tyler Armstrong has a higher calling. The Yorba ...

YORBA LINDA, Calif.--(BUSINESS WIRE)--Tyler Armstrong began climbing mountains at seven years old for a fun challenge. Now at 11, Tyler climbs for those who can’t – the 300,000 boys around the world ...

A NINE-YEAR-OLD US boy has become the youngest person in recorded history to reach the summit of Argentina's Aconcagua mountain. Tyler Armstrong of Yorba Linda, California, reached the summit on ...

Eleven-year-old Tyler Armstrong of Yorba Linda is gearing up to become the youngest person to climb Mount Everest – the world’s tallest mountain. To conquer Mount Everest in the spring, Tyler will ...