I thought I had blogged about the prodigious walking of Wilkie Collins back when I wrote about him for the LRB, but I don't seem to have.
In The Woman in White, Collins's hero Walter Hartright is eternally walking. His first vision of the Woman in White, in fact, comes during a walk from Hampstead to his apartment in the Inns of Court, a distance of slightly more than four miles. But even though Walter begins his walk after dark, he takes the long way home:
I determined to stroll home in the purer air, by the most round-about way I could take; to follow the white winding paths across the lonely heath; and to approach London through its most open suburb by striking into the Finchley-road, and so getting back, in the cool of the new morning, by the western side of the Regent's Park.
According to Google, if in your walk from Hampstead to the Inns of Court you insist on going by Finchley Road and the west side of Regent's Park, you nearly double your trip, to slightly more than seven miles long. No wonder that Walter later, in a high frenzy of sleuthing, scoffs at fear of distance:
"How far is it to Knowlesbury from this place?" [Walter asks.]
"A long stretch, sir," said the clerk, with that exaggerated idea of distances and that vivid perception of difficulties in getting from place to place, which is peculiar to all country people. "Nigh on five mile, I can tell you!"
It was still early in the forenoon. There was plenty of time for a walk to Knowlesbury, and back again to Welmingham. . . .
Though hobbled by something he called gout, and addicted to opiates, Collins himself walked vigorously. Biographer Catherine Peters reports that during an 1873 book tour of America, Collins was dismayed to discover that Americans did not carry walking-sticks and did not like to go on walks. From New York, Collins wrote home to a friend of his chagrin:
I . . . thought nothing of a daily constitutional from my hotel in Union-square to Central Park and back. Half a dozen times on my way, friends in carriages would stop and beg me to jump in. I always declined, and I really believe that they regarded my walking exploits as a piece of English eccentricity.
Collins's constitutional measured about five miles.