Below, we break down how treadmill<\/a> and outdoor walking compare for fat loss, strength and cardiovascular fitness \u2013 plus when you might want to choose one over the other.<\/p>\n The benefits of treadmill vs outdoor walking<\/p>\n \u2018The treadmill is a consistency tool: weather-proof, kind to joints and you can dial in the exact incline you want,\u2019 notes Rowe-Ham.<\/p>\n That ability to control the incline can make it particularly useful when you want to increase the intensity of your walk. A small study<\/a> published in the International Journal of Exercise Science last year compared the viral 12-3-30 treadmill workout<\/a> with self-paced running.<\/p>\n While overall calorie expenditure was similar, a greater proportion of energy came from fat during incline walking: around 40%, compared with 33% during running.<\/p>\n Of course, incline walking isn\u2019t limited to treadmills<\/a>. A treadmill simply removes some of the logistical barriers \u2013 namely finding a suitable hill \u2013 while allowing you to control the gradient precisely.<\/p>\n Walking outdoors, meanwhile, comes with its own advantages. If safe and suitable, it can offer additional mental health and wellbeing benefits, says Rowe-Ham, including \u2018better sleep, better mood and [more] vitamin D<\/a>\u2019, while varied terrain can also challenge your balance<\/a>.<\/p>\n Outdoor walking can help challenge balance thanks to variable terrain<\/p>\n \u2018Walking in green space literally calms the brain\u2019s stress centre,\u2019 she adds. \u2018Plus women consistently say outdoor walking feels easier at the same effort, so we go further without noticing.\u2019<\/p>\n ‘Walking in green space literally calms the brain\u2019s stress centre’<\/p><\/blockquote>\n<\/blockquote>\n One study<\/a> comparing walking in an outdoor natural environment with walking in an indoor simulated natural environment found that participants’ heart rates were higher outdoors without a corresponding increase in perceived exertion. In other words, they appeared to work harder without feeling as though they were.<\/p>\n Both environments were associated with mood benefits, however. The outdoor group reported feeling more energised afterwards, while the indoor group experienced a reduction in tension.<\/p>\n Treadmill vs outdoor walking for fat loss, strength and fitness<\/p>\n If your goal is sustainable fat loss, says Rowe-Ham, treadmill and outdoor walking are fairly evenly matched.<\/p>\n \u2018A step is a step; what matters is how much and how often you walk, so whichever gets you moving more wins,\u2019 she notes.<\/p>\n What if building strength is the aim? While \u2018neither builds real muscle on its own\u2019 \u2013 you’ll need resistance training<\/a> for that \u2013 Rowe-Ham says \u2018incline treadmill walking at 10\u201315% is the better glute and leg workout\u2019.<\/p>\n For general cardiovascular fitness, both are useful. \u2018Treadmill edges it for structured intervals; outdoors edges it for those long, easy walks that build your aerobic base,\u2019 says Rowe-Ham.<\/p>\n So rather than picking a winner, incorporating both could give you the best of each: the treadmill for controlled, structured sessions and outdoor walking for longer, lower-intensity movement.<\/p>\n 3 treadmill vs outdoor walking myths<\/p>\n There are also a few persistent myths about how treadmill and outdoor walking compare.<\/p>\n 1. You need a 1% treadmill incline to mimic walking outdoors<\/p>\n You may have heard that setting a treadmill to a 1% incline replicates the energy demands of moving outside. But that rule originates from running research, notes Rowe-Ham.<\/p>\n \u2018At walking speeds, the calorie difference is tiny.\u2019<\/p>\n The bigger difference may be in how you move.<\/p>\n \u2018On a treadmill, we all walk a bit more cautiously, with shorter strides and quicker steps. Outdoors, you\u2019re dealing with different elements: kerbs, cambers, slopes and turns, which wake up all the little stabilising muscles around your ankles and hips.\u2019<\/p>\n Rowe-Ham herself used to favour the treadmill before becoming a convert to outdoor exercise.<\/p>\n \u2018I used to be a total treadmill runner: controlled, predictable, job done, but once I learned about the outdoor benefits and what that uneven ground was doing for my balance and bones, it won me over.\u2019<\/p>\n ‘Outdoor walking wakes up all the little stabilising muscles around your ankles and hips’<\/p><\/blockquote>\n<\/blockquote>\n 2. The treadmill belt does some of the work for you<\/p>\n Not at typical walking speeds, says Rowe-Ham.<\/p>\n \u2018The belt doesn\u2019t do the work for you at walking speeds; that\u2019s a myth nicked from running research.\u2019<\/p>\n And don’t put too much faith in the calorie figure flashing up on the screen, either.<\/p>\n \u2018The treadmill calorie readout is often 20% off either way \u2013 that\u2019s the machine, not you.\u2019<\/p>\n 3. Outdoor steps automatically count for more<\/p>\n \u201810,000 steps outdoors doesn\u2019t magically beat 10,000 indoors, step for step,\u2019 says Rowe-Ham. \u2018The extra value outside comes from light, nature and terrain.\u2019<\/p>\n In other words, the steps themselves aren’t inherently more valuable simply because you accumulated them outside. It’s the additional environmental factors that may provide benefits.<\/p>\n So, should you walk outside or on a treadmill?<\/p>\n Ultimately, the best option is the one you’ll do consistently.<\/p>\n Rowe-Ham now opts for outdoor walking whenever possible \u2013 not least because she doesn\u2019t have a treadmill at home.<\/p>\n \u2018I spent years loyal to the machine, and it served me well, but the day I took my walks outside properly, something shifted,\u2019 she says. \u2018My head felt clearer, the walks felt shorter and I actually looked forward to them.\u2019<\/p>\n Her advice? Use both according to what you need that day.<\/p>\n \u2018Treadmill when the weather\u2019s grim, it\u2019s dark or steps need to happen while you\u2019re on calls. Outdoors when you need the head-clearing as much as the steps, and when balance and bone-loading matter, which, for women in midlife, is most of the time.\u2019<\/p>\n And given that the average person in the UK reportedly spends just 7% of their working week \u2013 around 86 minutes a day \u2013 outdoors, according to Loughborough University<\/a>, a walk can also be an easy way to get a little more fresh air into your day.<\/p>\n The bottom line? There’s no need to pick a team. The treadmill offers convenience, consistency and precise control over your workout; walking outdoors adds variable terrain, daylight and time in nature. Whichever gets you walking more is likely to be the better choice for you.<\/p>\n One of our most frequently asked questions here at Women\u2019s Health? How to build muscle and burn fat at the same time. So, we asked superstar trainer Oyinda Okunowo<\/a> exactly how to do it. In this 4-week plan \u2013 created exclusively for Women\u2019s Health COLLECTIVE members \u2013 you\u2019ll get the workouts and nutrition guidance needed to help you on your way to better body composition. Tap the link below to unlock 14 days of free access to Oyinda’s plan and start training today.<\/strong><\/p>\n![\"treadmill](\"https:\/\/www.europesays.com\/us\/wp-content\/uploads\/2026\/08\/19853b15-40d8-48d5-9bef-b855c6740175.jpeg\" "\\"Treadmill")
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