Want to run your first marathon? There's a watch for that.

New York News 2:30 mins

The idea of running 26 miles can be daunting, especially if you're a beginning runner. But a slew of fitness trackers and GPS watches are helping people who have never run before get started and stay on track. CNET's Sumi Das shows us how the devices are motivating runners to finish their first marathons.

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