Is Running Good for Weight Loss Over 40? Pros, Cons and How to Start

Running is good for weight loss over 40 if your joints and fitness can handle it. It burns roughly twice the calories of brisk walking per minute, and a large long-term study found runners lost more weight per unit of effort than walkers, especially the heaviest men. The downside is recovery: running loads your knees, hips, calves and Achilles more than walking, and men over 40 who jump in too fast often get hurt and stop. Start with walking and strength training, add short run–walk intervals, and build slowly.

What running burns compared with walking

The Compendium of Physical Activities rates running at 6 to 6.3 mph (about a 10-minute mile) at 9.3 METs and running at 5 to 5.2 mph at 8.5 METs, compared with 4.8 METs for brisk walking (Compendium: running, Compendium: walking). Using the usual approximation that 1 MET is about 1 Calorie per kilogram per hour, net of resting:

That’s roughly double for the same time. For a busy man, that efficiency is the main appeal.

What the long-term evidence shows

In a 6.2-year follow-up of thousands of runners and walkers, changes in body mass index were more strongly linked to changes in running than walking. In the heaviest group, weight loss per unit of energy spent was about 90% greater for running than for walking, and running blunted age-related weight gain in both men and women (Williams, 2013).

A meta-analysis of interval and steady training found that running-based programs, whether intervals or continuous, had large effects on whole-body fat mass, while the cycling programs in those studies didn’t produce fat loss (Wewege et al., 2017). The studies were short and small, but they point the same way.

The costs after 40

Running isn’t free. Compared with walking:

• More impact per stride, which matters more the heavier you are.
• More recovery needed, especially for calves and Achilles tendons, which can take longer to adapt than your heart and lungs.
• Higher appetite for some men, which can quietly cancel the extra burn.
• A higher injury risk when mileage jumps quickly, a trap for men who used to run and still expect their old pace.

Whether running is bad for your joints in general is covered in is running bad after 40. The short version: gradual, sensible running is fine for most men, and sudden big jumps in volume are the problem.

Who running suits, and who should walk first

If you have heart disease, high blood pressure, diabetes or other conditions, or haven’t exercised in years, check with your doctor before adding vigorous exercise. The health check before starting exercise explains what to ask.

How to start running for weight loss over 40

1. Walk first. Get to 30 to 40 minutes of brisk walking, four or five days a week.
2. Add run–walk intervals. For example, 1 minute of easy running and 2 minutes of walking, repeated for 20 to 30 minutes, two or three times a week.
3. Increase gradually. Lengthen the running bits and shorten the walks over several weeks. Keep the pace conversational.
4. Keep easy days between runs at first, and walk on those days.
5. Lift twice a week. Canada’s guidelines call for muscle-strengthening activities at least twice a week (CSEP), and strong legs and hips protect your joints when you run.
6. Track food as well as runs. The extra burn only helps if you don’t eat it back.

The beginner running plan over 40 lays this out week by week. If you’d rather keep running sessions short and hard, HIIT vs steady-state cardio over 40 compares the options.

The bottom line

Running is one of the most time-efficient ways to burn calories and has good long-term evidence for weight control, but only if you build into it slowly and keep your diet in check. If your joints or weight make it a struggle right now, walking plus lifting gets you most of the way; see walking for weight loss over 40. For a coach to decide the right mix of running, walking, lifting and eating for you and adjust it weekly, see weight loss coaching for men.