Hurdle race and Obstacle race

Hurdle race noun - A footrace in which contestants must negotiate a series of hurdles.

Obstacle race and hurdle race are semantically related. In some cases you can use "Obstacle race" instead a noun phrase "Hurdle race".

Obstacle race noun - A race in which competitors must negotiate obstacles.

Hurdle race and obstacle race are semantically related. You can use "Hurdle race" instead a noun phrase "Obstacle race".