As of September 2018,[update] she holds the world record for paced bicycle land speed[1][2] and is considered "the fastest cyclist on earth".
Her father, Myron Mueller, was an ultra-distance cyclist; he celebrated his 70th birthday by pedaling the entire perimeter of the coterminous United States, a distance of more than 12,000 miles (19,000 km).
[10] Mueller competed as a junior cyclist in her teens and finished in the top three in national and world competitions more than a dozen times.
Her trainer, both in her teens and later, is John Howard, a three-time Olympian and holder of the world speed record before Rompelberg.
[6] The custom bicycle is geared so high that it has to be towed by the pace car until it reaches 90 to 100 miles per hour (140 to 160 km/h); the cyclist then casts off the towrope and pedals under their own power.
[11] In her 2018 attempt, Mueller-Korenek circled the track 3+1⁄2 times after casting off the tow rope, breaking the world record on her final mile.