Which is NOT a popular road race distance for promoting healthy competition and achievement?

• A. 15K (9.3 miles)
• B. 5K (3.1 miles)
• C. 10K (6.2 miles)
• D. Half-marathon (13.1 miles)

Answer: (A)

Races that promote healthy competition are chosen for broad participation and a clear, achievable progression. The 5K, 10K, and half-marathon are widely offered, well-supported by training plans, and familiar to most runners and programs, making them accessible entry points and common milestones. The 15K, while it exists in some events, isn’t as regularly included or as universally adopted in training plans or school and community programs. Its relative rarity compared with the other distances makes it the least representative of the typical setup used to foster broad participation and steady achievement, so it’s the best choice for the one that isn’t a popular road race distance.