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Sir Kevin can knock out ultra marathons 7 days in a row.
I need at least 35 days rest to do my second!
I will run the Brighton and Leeds marathons to raise money for the MND Association.
It's a horrendous disease with no cure yet.
The MND Association focus on improving access to care, research and campaigning for those people living with or affected by MND in England, Wales and Northern Ireland.
Once you donate, JustGiving will send your money directly to the MND Association.