From Paul Salopek's article yesterday:
More than three years ago, while researching this long and very slow journey, I visited the remote Kenyan camp of the famed paleoanthropologist Meave Leakey. I recall setting out one morning for a nearby village.
“Is it within walking distance?” I stupidly asked Leakey.
She stared at me, astonished. “Everything is,” she replied.
(and if in doubt, I shall take my bicycle)