While the majority of Lincoln 10k runners will only have to race a six mile route, on runner will be finalising a much longer journey.
Andy Reilly is a Lincolnshire firefighter in Castle Howard, North Yorkshire. He will be running 100 miles from his place of work to Lincoln Castle — around 100 miles.
The challenge has been dubbed Castle2Castle 100 in aid of Help for Heroes, and he is hoping for donations on his Just Giving page.
Reilly said: “I wanted to come up with a challenge that was on a par with the types of challenges our troops face when they return injured from operational duties.
“I quickly realised that nothing would even come close to the type of hard work and determination shown by our injured troops during their recovery and beyond. Instead I came up with Castle 2 Castle 100!
“I’d like to thank the City of Lincoln Council for letting me ‘gatecrash’ the Active Nation Lincoln 10K Road Race.
“Their willingness to help me organise the event has made my life much easier, leaving more time to train.”
Lincoln 10k Organiser Keith Taylor, Senior Sport Development Officer at the City Council, said: “The challenge that Andy is taking on is exceptional, and will involve a lot of hard work and determination.
“This is the case for most people taking part in the Lincoln 10K, and we encourage people of all abilities to join us – from professional athletes to people who have only recently started running.
“We’d like to wish Andy the best of luck for the Castle2Castle 100 and look forward to welcoming him to Lincoln on Sunday, March 25.”
You can keep up to date with his training on Twitter, @reilly781.
There are still places left for each event over the 10k weekend.