長跑

long-distance running

length / long / forever / always / constantly

chief / head / elder / to grow / to develop / to increase / to enhance

(of an animal) to paw (the ground)

to run / to run away / to escape / to run around (on errands etc) / (of a gas or liquid) to leak or evaporate / (verb complement) away / off

middle distance race

long distance runner