On 3 October 2023, Rotich transferred her eligibility to represent the United States in international competitions.

[1] Born in Nyahururu, Rotich gained a sports scholarship in Japan at Sendai Ikuei Gakuen High School – an institution known for long-distance running (attended by athletes such as Samuel Wanjiru).

[2] She began competing in Europe after graduating and won the 2004 Diecimiglia del Garda in Italy and the Semi-marathon Marvejols-Mende in 2005.

[6] A career breakthrough came with a win at the Las Vegas Marathon, where she crossed the line in a time of 2:29:47 hours and won "Battle of the Sexes" race against the men.

[18] The New Mexico state legislature declared 28 February 2017 as the “Caroline Rotich Day” in recognition of her running accomplishments.