What is a good marathon time?
A good marathon time is under 4 hours for men and under 4:30 for women. The average marathon finish time is 4:30 (men) and 4:50 (women). Sub-3:30 is a strong amateur goal; sub-3:00 for men and sub-3:30 for women are major competitive benchmarks.
The marathon is where most casual runners meet their physical ceiling. Honest benchmarks: the global average finish time is around 4:30 for men and 4:50 for women. For men: 5:00+ is typical for first-timers, 4:15-5:00 average, 3:45-4:15 solid amateur, sub-3:45 strong, sub-3:30 competitive amateur, sub-3:00 very strong (requires serious training), and sub-2:50 serious club level. For women: 5:15+ first-timer, 4:30-5:15 average, 4:00-4:30 solid, sub-4:00 strong, sub-3:45 competitive, sub-3:30 very strong, sub-3:15 serious. Breaking 4 hours (men) or 4:30 (women) is a milestone that about 30% of marathon finishers achieve. It represents roughly 5:40/km pace (men) or 6:24/km pace (women) sustained for 42.2 km. Reaching sub-3:30 (men) requires 60-80 km weekly average, a 32+ km long run, and 2 quality sessions per week for 16-20 weeks. Sub-3 hours requires 80-100 km weekly, dedicated marathon-pace work, and usually 2+ years of base. Age affects these significantly — a 3:45 marathon at age 50 is equivalent to roughly 3:20 at age 30. First marathons should always be about finishing strong, not hitting a time goal; save the aggressive targets for races 2-5.