"Race" is the most commonly used word to describe a competition of running.

The word "race" comes from the Old French word "rasse", which means "a rush, dash, or gallop". It was first used in Engpsh in the 14th century to describe a contest of speed.

Examples:

The runners are getting ready for the race.
She won the race and set a new personal best time.
The annual city marathon is a popular race for runners.

Translations:

赛跑的选手们正在准备比赛。
她赢得了比赛，创造了新的个人最佳成绩。
市年度马拉松是跑步选手们受欢迎的比赛。