Rooster and I (Rooster is my 7-year-old Welsh corgi) completed 100 miles That was an undertaking for both of us; I am 75 years old, and Rooster stands approximately 1 ft tall with 4-inch-long legs! We averaged 3 miles per day for 32 days, the least amount being .85 miles and the greatest being 6.48 miles. We have continued to log miles, and as of yesterday we are at 186.03 miles.