Describe a tempo run and its purpose in conditioning.

• A. A long slow jog with a relaxed pace.
• B. Intervals at maximum effort with full recovery.
• C. A steady, comfortably hard pace just below race pace to improve endurance and aerobic capacity.
• D. A mixed-pace run with random speeds.

Answer: (C)

Tempo runs train the limit of sustainable pace by keeping you at a steady, challenging effort that sits just below your race pace. This kind of work pushes your body to operate near the lactate threshold, where you begin to accumulate lactate faster than you can clear it. By practicing holding a hard but sustainable pace, you improve endurance and aerobic capacity, so you can sustain faster speeds for longer during races. A tempo run is run continuously at this tempo pace for a set duration (often 20–30 minutes) with proper warm-up and cool-down. The pace should feel comfortably hard—you should be able to speak in short phrases but not hold a conversation easily, and you shouldn’t be sprinting. This is why the option describing a steady, comfortably hard pace just below race pace to improve endurance and aerobic capacity is the best match. The other options describe different types of workouts: a long easy jog builds base endurance but not the tempo quality; intervals at maximum effort with full recovery are high-intensity interval training; a mixed-pace run is more like fartlek and lacks the steady tempo focus.