There are other races which are run X miles pr day for N days in a row and then add up the times for people who want more of a running focus. There are also var

There are other races which are run X miles pr day for N days in a row and then add up the times for people who want more of a running focus. There are also variants where you have to keep a pace of at least X mph or get disqualified. Personally I respect the 'purity' and simplicity of get from here to there on foot as fast as possible.