<prompt> Howard Grotts akaberekwa muna Ndira 12, 1993 muAmerican cross-country mountain biker. Akatasva bhiza achiyambuka nyika  <response>: mutambo weOlympic wa2016. Akakundawo Leadville Trail 100 kwemakore matatu akateedzana kubva muna 2017 kusvika muna 2019. 