Here is how an unbiased professional source (Ironman.com) reported her horror at Guinness'es refusal.
Oof! Imagine this: You log 520 miles running on a treadmill in a single week, aiming to crack the Guinness World Record. You pass the current record mark of 517.63 miles, and collapse in exhaustion and elation. And then, a technical detail derails your feat. Thatâ€™s exactly what ultra runner Amy Hughes did last Septemberâ€”but after months of processing, Guinness recently denied her record attempt due to improper witnessing.