A block or two if your measuring using an ulternate way of measuring distace... it's just over 1 1/2 miles. At the time it seemed like 10 1/2.
Thanks for the offer of edu-ma-cating me on riding on gravel but I think I'll pass. Jeff has done a pretty good job of providing at least one training "opportunity" a year and then offering his apologies with "Oops hon, the GPS lied". Besides, my goal for the year is to not have any insidences that involve the bike on its side instead of on wheels. I've started every summer for the last 5 years with that goal and so far so good.