As tens of thousands of runners celebrated completing the London Marathon last month, their personal triumphs underscored a universal truth: while the drive to run is ageless, the body’s capacity evolves. Running pace naturally changes with the decades, but smart, targeted training can help athletes of all ages adapt and continue to perform.
What Constitutes a Good Mile Time?
For those measuring fitness or setting goals, the mile remains a key benchmark. According to personal trainer and nutritionist Joseph Webb, whose expertise is featured in publications including GQ and Women’s Health, realistic times vary significantly by age. For healthy adults in their 20s and 30s, a mile time typically falls between seven to ten minutes, with trained runners often dipping under seven. In the 40-59 bracket, Webb suggests a target of nine to twelve minutes, while for those aged 60 and over, a pace of eleven to fifteen minutes is a strong, realistic aim.
These figures align with broader averages. Data indicates a “good” mile time across all ages and sexes is approximately 7:04, with averages around 6:37 for men and 7:44 for women. Beginners may start in the 12-15 minute range, a world apart from elite runners who can cover the distance in just four to five minutes. The proof that age is no absolute barrier lies in figures like Fauja Singh, who at a claimed age of 100 recorded a one-mile time of 11:53.45, well within the range for his senior years.
The Physiology of the Aging Runner
So why does running often feel more difficult as the years pass? The reasons are a complex interplay of inevitable biological change. Joseph Webb points to a critical factor: the loss of muscle mass. “Without strength work, we lose 1% muscle mass per year after 40,” he explains, a process known as sarcopenia. This weakens running mechanics, increases wear on joints, and can accelerate after age 60.
This muscle loss is compounded by a decline in aerobic capacity, or VO2 max—the body’s ability to utilise oxygen during intense exercise. Research indicates performance in endurance sports typically begins to wane from the mid- to late-30s, with a more pronounced drop after the late 50s. The rate of decline is estimated at 0.5% to 1% per year from age 35 to 60, accelerating thereafter, though vigorous training can mitigate this slowdown.
Meanwhile, the very infrastructure of movement becomes less forgiving. Connective tissues stiffen with age; collagen loses elasticity, tendons become less pliable, and cartilage can thin. This reduces flexibility, joint mobility, and can shorten stride length. Furthermore, the body’s repair mechanisms slow. “Older bodies take longer to repair micro-tears and inflammation,” Webb notes, meaning recovery from hard efforts is not as swift as in younger decades.
Adapting Training and Prioritising Recovery
The response to these changes is not to stop, but to train smarter. Webb and broader research point to strength training as non-negotiable for runners over 40. It counteracts muscle and bone loss, improves running economy, and provides joint stability, with some data suggesting it can reduce injury risk by over 50% in those who train strength regularly. Key exercises include squats, deadlifts, lunges, and core stability work.
Recovery, always important, becomes paramount. Webb advises prioritising seven to nine hours of sleep per night, considering naps if needed, and taking proper rest days. Nutrition is crucial, particularly adequate protein to support muscle repair. He also recommends using tools like foam rolling, massage, and stretching, alongside staying hydrated, to aid the body’s repair processes.
Listening to the body is also key. Signs you may be pushing too hard, according to Webb’s guidance, include sleep disturbances, sharp or stabbing pains (as opposed to general soreness), swelling, extreme fatigue lasting beyond 48 hours, and an elevated resting heart rate. For those seeking lower-impact alternatives to maintain fitness, activities like cycling, swimming, brisk walking, yoga, and rowing offer excellent cardiovascular and strength benefits with less joint stress.
The enduring appeal of running is evident in events like the 2024 London Marathon, which saw a record 53,847 finishers with significant participation across all age groups. While the winners, Alexander Mutiso Munyao and Peres Jepchirchir, showcased elite speed, the average finish time of 4 hours, 27 minutes, and 35 seconds tells a story of widespread, determined participation. It is a powerful reminder that with intelligent adaptation to our changing physiology, the race is always with ourselves.