2 mile run and didn't collapse (bonus!)

Did a two mile run tonight (2.16 miles to be exact). Felt knackered about half a mile from the end but decided to keep on running. Quite pleased - by the way know it's 2.16 cause went on my back on same route ten minutes later on the bike and that's what the computer said!! Progress. Am going to add it to my daily routine if I can.