Collins was a silver medallist at the 2011 All-Africa Games and was part of the world record-setting Kenyan 4 × 1500 metres relay team at the 2014 IAAF World Relays.
Collins was a silver medallist at the 2011 All-Africa Games and was part of the world record-setting Kenyan 4 × 1500 metres relay team at the 2014 IAAF World Relays.