By peoplestaff225
Updated October 02, 2009 03:00 PM
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No Doubt frontwoman Gwen Stefani keeps the pace as her boys, Kingston James McGregor, 3, and Zuma Nesta Rock, 13 months, get their wheels spinning during a hike through Griffith Park in Los Angeles on Thursday.

Kingston rides a LIKEaBIKE Mountain ($315) while Zuma drives a Step2 Push Around Buggy in Red ($45).

Click below for Zuma’s reaction to all that time outside!