, the marathon seems nothing. However, you have to respect your body and allow it to get used to the idea gradually. Best of luck!—Bruce Tulloh, who took just 65 days to run across the USA in 1969

-confidence. If children have enough space, they’ll be running and walking every day as part of general play anyway. In truth, a child as young as seven could probably cope with covering a total of five miles a day in this manner at their own pace. If children can only

-dune running are also time-honoured ways of improving leg strength while getting other benefits at the same time. For leg power it is best to use a steep slope, eg 25 per cent, and keep the duration of the run under 30 seconds, with a walk recovery. If you use

Firth. One of them asked, “Shall we walk for a bit?”“I’m not stopping,” I replied, and I carried on and won. From that point I thought of myself as a runner, and since then I’ve run eight or nine hundred races and covered 100,000 miles in racing