noun
journey ahead; distance to travel
Refers to the remaining part of a journey or the distance one still has to cover. Somewhat literary or formal; in everyday speech, 残りの道のり or 先の道のり are more common.
前程はまだ長い。
The journey ahead is still long.
彼は前程を気にして、早めに出発した。
Worried about the distance he still had to travel, he set out early.