GRRR: Great River Road Race GRRRR, Great River Road Race. 8:00 am, 5k - 10k and kids run, Pikes Peak State Park, McGregor, IA. GRRR: Great River Road Race Set a Reminder Enter your email address below to receive a reminder message. Email address Select the amount of Days before the event -- Select Days Before Event -- 1 Day 2 Days 3 Days 1 Week Submit Date and Time Saturday Oct 2, 2021 Location Pikes Peak State Park, McGregor, IA Contact Information 563-873-2186 Set a Reminder Enter your email address below to receive a reminder message. Email address Select the amount of Days before the event -- Select Days Before Event -- 1 Day 2 Days 3 Days 1 Week Submit Share × Print Email Add to Calendar Facebook Twitter LinkedIn Tell a Friend × Select Calendar Type × Google Yahoo iCal (Outlook, Apple, or other)