middle-distance running
Refers to track events typically between 800m and 3000m. Used in sports contexts.
He competed in the national tournament in middle-distance running.
Middle-distance running requires both endurance and speed.
Refers to sprint events (100m, 200m, 400m), shorter than 中距離走.
Refers to long-distance events (5000m, 10000m, marathon), longer than 中距離走.
Compound of 中 (middle), 距離 (distance), and 走 (running).