Half a million? That's it.
Why, when I was kid I got that many feet on my Royce Union in the first 6 months I owned the bike. I used the prize money I earned racing other kids in the neighborhood up "Deacon Canyon" to buy a brand new 1969 Schwinn Orange Krate:
http://www.antiquewhs.com/2005011.htm
The Orange Krate was fully equipped with five speed Stik-Shift, front spring fork, and rear shock absorber, bucket seats, and front drum brake. It also featured chrome plated fenders, "MAG" sprocket, and rear caliper brake. The Kool Orange color...well, priceless. Schwinn also made an Apple Krate, which was Red
With a retail price of slightly under $100 dollars (an Orange Krate in original condition now sells for ~$3,500), well I must have won a lot of climbs up Deacon Canyon; and that translates to well over half a million feet of climbing that summer.
So before you go bragging about your measily 50,000 flat land miles, try climbing Deacon Canyon on a bike that weighs over half your own body weight (as the Royce Union did). At 45 pounds the Orange Krate was ultra-light (still over half my body weight - I was 8 years old); I owned the Deacon Canyon climb once I moved up onto that 'light as the clouds' bad-boy!
Well, as you can imagine, with the money I made kickin' butt with my Orange Krate I had to customize it! I knew the others would be green with envy, and after having gotten 'inked' for the first time (via a rub on tattoo from the penny machine at the Rexall) I decided to go lowwwww. To check out my "dropped n chopped" Green Apple Krate:
http://www.youtube.com/watch?v=a7s4RPik4KQ