Mo Farah is ready to race Luke Littler in a half marathon to settle a viral online debate.The race would also see the pair attempt to checkout from 501 on a dartboard after each mile.Farah is ready to settle a viral challenge with a half marathon against LittlerGettyAfter the hypothetical contest emerged on social media, fans have speculated who would come out on top.Amongst them is British heavyweight boxer Dave Allen, who is keen to see the contest take place.Littler ‘sick of seeing’ Farah contestAllen has revealed he messaged both Farah and Littler, with the pair replying to his proposition.His response from Littler saw the teenage darts sensation reveal his honest stance on the challenge. @talksport “I’ve messaged Mo Farah for the last three days, he hasn’t even read it!” Dave Allen playing matchmaker as he tries to set up a half marathon & 501 between Luke Littler and Mo Farah #boxing #darts #marathon ♬ original sound – talkSPORT The back-to-back world champion said: “Sick of seeing this. Don’t think Mo could take out 501. Tbh (to be honest), I’d walk it after my first 501.”Allen was made to wait longer for a reply from Farah, though, revealing his wait to talkSPORT Boxing.The White Rhino explained: “I think Luke Littler wins a half marathon with after every mile a 501.“I messaged Mo Farah for the last three days, he hasn’t even read it.“I’m going to put it on Instagram later, tag him and say, ‘Mo, why are you ducking the challenge?’ I’m determined to get it on.”The wait for a reply could have been down to Allen accidentally tagging his son on social media.Littler has admitted he is ‘sick of seeing’ the hypothetical contest on social mediaGettyHe continued: “I didn’t mean to and someone said ‘you’ve tagged his son,’ so I said, ‘good, he can go and ask his dad’.“If I beat (Filip) Hrgovic, the money from the next fight, I’ll pay Littler and Mo Farah to do the challenge.”Allen is set to face Filip Hrgovic at the Keepmoat Stadium in Doncaster on May 16.Farah accepts challengeFarah has now finally replied to Allen’s messages and admitted he is willing to get the event put together.The four-time Olympic gold medallist said: “I will let my team get in touch with you! Yeeeezzzzzz!! 501.”Farah, who retired from long-distance running in 2021, won gold in the 5,000m and 10,000m at the 2012 and 2016 Olympics.Allen is desperate to see Farah and Littler take part in the unique half marathon raceGettyMeanwhile, he holds a half marathon personal best of 59minutes 7seconds.At 19, Littler is less than half the age of his hypothetical rival, who turned 43 in March.