For the first 10K of the runners' challenge they were accompanied by dozens of colleagues from their office in Weetwood who stayed with them all the way to the Royal Armouries in South Leeds. Neil Jones and Chris Lawrence will carry on to London over the next seven days averaging a marathon a day.
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Here is a look at some of the best pictures of Hull FC fans ahead of the Challenge Cup final.
A time lapse shows video how the Team GB legacy event #IAMTEAM GB was set up in a bid to boost to British sport.
Hull FC are hoping to end their Wembley hoodoo today in the Challenge Cup final against Warrington.