Yūma Koishi

Yūma Koishi (小石 祐馬) is a Japanese cyclist, who currently rides for UCI Continental team.

Major results

 * 2015
 * Asian Under-23 Road Championships
 * 1st Road race
 * 3rd Individual time trial
 * 1st MaillotJapón.PNG Time trial, National Under-23 Road Championships
 * 9th Gran Premio di Poggiana


 * 2018
 * 7th Overall Tour de Lombok Mandalika


 * 2021
 * 3rd Oita Urban Classic
 * 5th Overall Tour of Japan


 * 2022
 * 2nd Overall Tour of Thailand
 * 2nd Time trial, National Road Championships


 * 2023
 * 1st MaillotJapón.PNG Time trial, National Road Championships
 * 3rd Overall Tour of Thailand
 * Asian Road Championships
 * 4th Road race
 * 5th Time trial


 * 2024
 * 2nd Overall Tour de Taiwan
 * 4th Overall Tour de Kumano