USA Ninja Challenge, which opened in May, offers activities that build confidence in a fun environment, the owners say.

SUNBURY, Pa. — It's open gym time at USA Ninja Challenge in Sunbury, and the kids are taking full advantage. The former Edison School in Sunbury was recently turned into a kids-based "ninja" gym.

A new space for a unique sport, based on a TV show you may have heard of.

How do I set up an obstacle course in my backyard? Ninja warrior may have started as an obscure Japanese tournament, but it has exploded into mainstream Western culture with television shows based on ...

Bend's Free Spirit Yoga, Fitness and Play offers a ninja warrior-style obstacle course for kids. The facility in Bend's Old Mill District has been heavily booked since it reopened.

How do I set up an obstacle course in my backyard? Ninja warrior may have started as an obscure Japanese tournament, but it has exploded into mainstream Western culture with television shows based on ...