Instead of the old Pedal don't pollute of the 70's, this new form of eco-tourism needs only a pair of legs and good running shoes.
Native New Yorker Michael Gazaleh founded City Running Tours a year ago to give visitors a street level view of the Big Apple.
You go sightseeing while getting a bit of exercise and do not contribute to the depletion of the ozone layer.
Since its start in New York, City Running Tours has now expanded to Chicago, Washington DC and San Diego.
The cost is $60 per person for a 2 and a half hour excursion.
Know of similar endeavors in other places around the globe, share them.
I first read about this service on Springwise.