noun
torchbearer; flame-bearer
Primarily used for Olympic torch relay participants. The term is straightforward and modern.
彼女は東京オリンピックの聖火ランナーに選ばれた。
She was chosen as a torchbearer for the Tokyo Olympics.
Compound of 聖火 (seika, 'sacred flame', referring to the Olympic flame) and ランナー (rannā, from English 'runner').