Amtrak stations near Colton: 1  3 miles: SAN BERNADINO (SAN BERNARDINO, 1170 W. 3RD ST.) . 2  7 miles: RIVERSIDE (4066 VINE ST.) - Bus Station 3  . 11 miles: MORENO VALLEY (ARCO MINI MART, 2624 E. ALESSANDRO BLVD.) - Bus Station .
Even when the horse has focused as best it can, its sight is only three-fifths that of a human. In other words, when looking at an object twenty feet away, the horse sees only as much detail as a person with twenty-twenty vision would if the object were thirty-five feet away.
With d in miles and h in feet, Examples, assuming no refraction: 1  For an observer on the ground with eye level at h = 5 ft 7 in (1.70 m), the horizon is at a distance of 2.9 miles (4.7 km). 2  For an observer standing on a hill or tower 100 feet (30 m) in height, the horizon is at a distance of 12.2 miles (19.6 km). For an observer on the summit of Aconcagua (22,841 feet (6,962 m) in height), the sea-level horizon to the west is at a distance of 184 miles (296 km).