In the five hours and forty-five minutes it took him to complete the London Marathon, athlete Ben Smith raised over £16,000 for his new charity, the 401 Foundation   Ben, who famously ran 401 marathons in 401 days two years ago, set himself the challenge to launch a crowdfunding campaign on the British platform Crowdfunder while simultaneously running the London Marathon. Ben said: “So many people supported us with the 401 Challenge, I felt that crowdfunding was the best way to give…