"4 km (5. 2 miles), the SBLI Falmouth Road Race in Falmouth Cape Cod is 7 miles long, San Francisco's "Bay to Breakers" is 12 km (7 . 46 miles); "City to Surf" in Sydney, Australia is 14 km, Honolulu's "Great Aloha Run" is 8. 15 miles (13. 12 km), and the "Charleston Distance Run" in Charleston, West Virginia is 15 miles (24. 14 km). Any running that covers a distance further than a marathon is called ultrarunning; the event is an ultramarathon. Black Hills Running Club Such events can be measured in distance (for example, 100 kilometers) or by time (whoever has run the farthest after 24 hours). Examples include the London to Brighton run in England which is just over 54 miles (87. "

" Some dropped jogging in order to take up "low-impact" exercises such as stair climbing. Jogging can be combined with other kinds of exercising. Special trails that combine them are called trim trails. Some people define jogging as an inefficient form of running which, for the given individual performing it, and all other conditions held constant, is less efficient than walking. Above a certain pace, running is a more efficient form of locomotion (requires less effort). Below that pace, running is less efficient than walking and makes no sense as a means of getting from point A to point B. A courier delivering a message on foot over 60 miles of road would expend more energy jogging the distance at a 13 minute mile pace rather than briskly walking it at the same pace. Shadowchase Running Club Slow jogging is pure exercise, with no practical application. Because jogging is inefficient, it's often associated with poor form. "