Shock-absorbing insoles that ease foot, shin and knee pain, so you can keep running.
⚡ Relieved plantar fasciitis pain in 91% of sufferers. 💥 Absorbs 51% of the impact of every foot strike. 🛡️ Clinically shown to reduce injury risk by 66% . 🦶 Arch support and a met pad soothe sore arches and ball of foot pain.
Trusted by Usain Bolt, Team GB and the British Military · Made in Britain · Lasts around 500 miles.
Feel the difference within 60 days or get a full refund, even if you've trimmed them to fit.
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Product Details
Why runners in pain switch to Enertor
• Heel and arch pain: a slightly raised heel and cushioned arch support take pressure off where it hurts most.
• Ball-of-foot and big-toe pain: a met pad and drop point relieve pain at the forefoot and from bunions.
• Shin and knee soreness: PX1 absorbs 51% of the force of each foot strike before it reaches your legs.
• Tired legs late in a run: lightweight cushioning with energy return helps you run faster for longer.
Size guide
Enertor insoles can be trimmed to size. If you are in doubt about your size, buy a size higher. Trimmed insoles are still covered under our 60 day satisfaction guarantee.
Size
Length (cm)
Widest point (cm)
Heel width (cm)
UK 3-4
24
8.2
6.2
UK 5-6
26
8.7
6.7
UK 7-8
27.8
9.2
6.9
UK 9-10
29
9.5
7
UK 11-12
31
9.8
7.5
UK 13-14
33
10.2
8
Size conversion chart
UK
EU
US Men
US Women
3-4
36-37
4-5
5-6
5-6
38-39
6-7
7-8
7-8
40-42
8-9
9-10
9-10
43-45
10-11
11-12
11-12
46-47
12-13
13-14
13-14
48-50
14-15
15-16
Shipping
UK Delivery
FREE Standard on all orders (2-4 working day service) 1st Class ‘signed for’ Royal Mail (usually a 2-3 working day service) - £3.95 Royal Mail Guaranteed Next Day delivery (order before 2.30pm, Mon-Fri, 1 working day) - £6.95
Please note: we deliver from our UK HQ. You will receive an order confirmation email as soon as you have ordered. It is your responsibility to ensure you have ordered and correctly given us a full UK or US address. We are currently not able to send to BFPO or APO addresses.
Enertor PX1 Running insoles$49.00
01 / Awards
Named the best by
The best shoe insert for running
The best running insoles
The best overall insole for running and walking
The best bargain running insoles
02 / The problem02/11
Pain cutting your runs short?
Every time your foot lands, it takes several times your body weight. Multiply that by thousands of strides on every run and your heels, shins, knees and arches start to pay for it.
Most running shoes come with a thin, flat piece of foam that does very little to absorb that impact. Enertor replaces it, boosting the cushioning and protection of the shoes you already run in.
03 / What they do03/11
Three things happen from your first stride
01
Your legs take less of the impact
PX1® technology stiffens in proportion to the force you put through it, absorbing 51% of the impact of every foot strike.
02
Your arches and forefoot get support
Cushioned, subtle arch support improves stability. A met pad and drop point ease pain in the ball of the foot, the big toe and bunions.
03
Your calves and achilles get a break
A raised heel protects the foot where impact is highest and eases tight calves and achilles.
04 / Who they’re for04/11
Made for runners. Loved by anyone who trains hard.
01
Road, trail and track runners
From your first parkrun to your first ultramarathon.
02
Anyone training for an event
Protect your legs as the miles build.
03
High-impact sports
Football, tennis and anything that pounds your feet.
04
Anyone with sore heels, shins, knees or arches
Customers wear them to ease plantar fasciitis, shin splints and runner's knee, and pair them with Recovery Slides for the hours after
“I'd gone from running half marathons to not being able to run at all within the space of a year due to shin splints… this week doing a 10k again NO PAIN.”
Beth S.Verified buyer
“I bought these because I have plantar pain. And I can't stop training as I have an event in December. These have changed everything.”
Josephine K.London Marathon finisher
“04:14:12 for my first marathon at the age of 67, and 3rd in Age Category. No problems with joints or muscles.”
Steven T.Verified buyer
“I've been using very expensive prescription orthotics for over 30 years & decided to try Enertor & I've been so pleased.”
Jane A.Ultrarunner
“The energy return is real. Runs feel waaay more comfortable especially on concrete sidewalks… Buy two.”
Felix H.Golfer
“I've had chronic ankle pain, nearly 3 years now, just completed a 13 mile jog, no pain.”
David S.Verified buyer
06 / Trusted by the experts06/11
The running insole the professionals choose
Worn by Usain Bolt and elite athletes including Team GB
66% reduction in injury risk in clinical testing with the British Military
Built on 20+ years of research into impact and injury
07 / Expert endorsement07/11
Recommended by the people who treat runners for a living
“As a physiotherapist I've recommended the insoles to many athletes. They've helped greatly as part of the
management of Plantar Fasciitis and Medial Tibial Stress Syndrome.”
Danny BruntonPhysio and Ultrarunner
08 / How they compare08/11
Why not just use the insole your shoes came with?
ENERTOR RUNNING INSOLES
THE INSOLE IN YOUR SHOE
Impact absorption
YesAbsorbs 51% of impact
NoThin, flat foam
Arch support
YesCushioned, Subtle arch support
NoFlat or minimal
Forefoot relief
YesMet pad and drop point
NoNothing
Calf and achilles relief
YesRaised heel
NoNothing
How long it lasts
YesAround 500 miles, about 8p a mile
NoFlattens quickly
Recommended by physios and podiatrists
Yes
No
60-day money-back guarantee
Yes
No
09 / Finding your size09/11
Get the right fit first time
Whole UK sizes, 4 to 12
Buy your shoe size. Half size? Size up, so a 6.5 buys our 7–8.
Trim to fit. Trim the toe end, using your old insole as a template.
Replace your old insole. Take out the insole your shoe came with and replace it with Enertor. Don't put them on top.
Check your shoes. They won't fit ultra-wide shoes such as Altras, stability shoes with built-in arch support, or shoes where the insole can't be removed.
10 / Risk-free guarantee10/11
Try them for 60 days. Feel the difference or get your money back.
Run in them for up to 60 days. If you don't feel the difference, send them back for a full refund, even if you've trimmed them.
Your shoe size. If you're a half size, size up, then trim to fit using your old insole as a guide.
02Can I put them on top of my existing insoles?
No. Take out the insole that came with your shoe and replace it with Enertor.
03How long do they take to get used to?
Start with shorter runs for about the first week while your feet adjust.
04How long will they last?
Around 500 miles, or about a year of running.
05Will they work in my shoes?
Yes, in most shoes with a removable insole, including road, trail and track shoes, football boots and hiking boots. They aren't suited to Altras, stability shoes with built-in arch support, or shoes where the insole can't be removed
06What's the difference between your running and walking insoles?
They're the same shape and have the same features. The difference is the formula inside: running insoles are slightly firmer, built for the high impact of running and sport. Walking insoles are slightly softer, built for lower-impact walking, hiking and everyday miles. Both feel amazing underfoot. See walking insoles →
07What if they don't work for me?
Send them back within 60 days for a full refund, even if you've trimmed them.
Customer Reviews
Overall rating: 4.4 / 5 from 2700 reviews.
I had a calf muscle tear last year so need to make sure I’m as comfortable as can be so new shoes every year along with a new Enertor insoles.
The added comfort has been very reassuring.
As you can see I have them in my road running and trail shoes too.
I tend to put them on top of the existing insoles for added comfort but you can remove the original insoles then replace them with these if that’s your preferred method.
Although it adds to the cost of the shoes I think it’s worth replacing the insoles each time you replace your shoes.
After owning many pairs of your walking insoles over the last 4 years, the latest pair were put to a good test last Saturday in the 2026 Pathfinder March - superb as always even over 49 very tough, very wet miles
I'm not sure to be honest. I've run for years and never suffered with blister but these insoles gave me blisters immediately. They also cause the back of my shoes to not support the heel properly, cause rubbing at the back of the foot.
Using during stress fracture recovery. Fit well into my adidas supernova as the original souls were really thin. Didn’t fit well in my asics gel kayano lite, but likely as these are really cushioned anyway. Buying another pair for my trail runners. So far, no stress fracture complaints so hopefully they are working.
So much cushioning this should be the standard for all manufacturers. Good job we have Enertor to go to for a decent insole. This will help massively when I start running again after injury.
Loving these new insoles :) I am a lifelong runner of 52 years of age with a history of bad knees and tight calves. The combo of these insoles with these shoes is pretty special. Super comfy cushioning which eases the stress on my aged lower limbs.
This is my second pair of Enertor running insoles, as I’ve worn the others for over 500km so I’ve decided on a new pair! Even though the show no signs of falling apart! The insoles are super springy and comfy - no blisters! I have had plantar fasciitis in the past and (touch wood) it’s not come back since I’ve used Enertors for running, AND for my walking shoes at work.
The Enertor insoles have been invaluable to me. Due to a persistent Achilles injury in 2020 I nearly stopped playing walking football.
Last throw of the dice I bought some Enertor. 5 years on I am still playing and am now an established England over 50s walking football player. We won a World Cup in 2024 and I am currently the record goalscorer with 38 goals. More importantly my physical health along with my mental health and wellbeing is protected because my Enertors allowed me to continue playing the sport I love the most.
Thank you
Mark
I went running with the insoles in a pair of asics running trainers and I was pleasantly surprised with the results.
I suffer with jerky knees but the Everton insoles has helped me running free of injury.
Worn them in slowly as recommended. Then rotated them in my short easy runs for the first 2 weeks. I already felt the difference there and couldn't wait to try them on my long runs. Once there, I couldn't believe how they held up on a 17 mile run. Especially my feet!
The energy return is real. Runs feel waaay more comfortable especially on concrete sidewalks. I am blown away by these insoles. What a quality product. Buy two.
These insoles are insane , I’d gone from running half marathons to not being able to run at all within the space of a year due to shin splints , I had tried everything to fix them which was unsuccessful , then I come across these insoles done my first run with no pain last week ! To the this week doing a 10k again NO PAIN , because of these insoles it’s allowed me to get back into running and keep on with my passion ❤️
Been using Enertor insoles since 2019 National running show, before then I was always having trouble with my feet, plantar fascia etc. since using these I've not had it. I put them in all my running shoes road and trail. Then I put them into my normal everyday shoes when I've finished running in them.
Been trying to break them in for around 2 weeks now but they're actively giving me blisters on my mid foot... Going to try for another week but will likely return if possible...
I’ve been wearing Enertor insoles for many years now both on road and trail, i literally won’t run without them! They take the shock out of your foot strike which really helps keep fatigue reduced especially helpful during my ultra marathons!
I bought these because I have plantar pain. And I can’t stop training as I have an event in December. These have changed everything. Pain is now totally manageable and I can continue training as normal. Brilliant product!
Me at the finish of the ‘Hilly’ Cornish Marathon on 02nd November with a new pair of Enertor insoles in my Clifton 10’s. 04:14:12 for my first marathon at the age of 67, and 3rd in Age Category. No problems with joints or muscles. I have been wearing them in all my running shoes all year and wouldn’t run without them now!
66 year old me with my support team following the Eden Project Half Marathon on 19 October. It’s a tough hilly, multi-terrain half. Buying some new insoles for the Cornish Marathon on 02 November, another hilly one, but that’s Cornwall. I really believe Enertor insoles help protect my old joints!
Just bought my second lot of Enertor insoles. One pair going into an existing pair of shoes which now feel fantastic again. The other pair into a new pair of shoes. Helping me keep injury free
My husband had a pinched nerve was struggling with recovery. After physiotherapy and massages he still could not make it past 30 minutes of running without his leg going numb.
After getting the insoles, he strugled a bit during the adjustment. I would recomend do a lot fo short runs. - he is now running more than an hour without any problems!
Clearly his foots arc was part pf the problem, and he feels the change within weeks. Woudl and will buy again: we could not be happier!
Believe the hype! These insoles are actually brilliant! 60 miles and 20,000 feet in the Dolomites just after I bought them and my feet felt great. I am really impressed.
Been wearing Enertor Running insoles for a few weeks after i have been recovering from a calf injury.
I ran the Great North Run and previously a few weeks of training.
So far , no more injuries.
I’ve been using very expensive prescription orthotics for over 30 years & decided to try Enertor & I’ve been so pleased. I regularly do long distance ultras & multi day races & they’ve been brilliant. I’ll definitely be buying more pairs 😊
The fit for my street running shoes (size 8) was perfect and they have genuinely helped me recover from a leg injury I picked up, very supportive on my foot and its like im running on clouds now, definitely looking at getting more at some point.
I started suffering a bit from plantar fasciitis so changed my inner soles to the Enertor, to try out. I was expecting to have to get used to them, but they're really good. No heel pain and so flippin comfortable. Such a good run., just over 5 miles. The shoes only have 52 miles on them but I do love off road.
I had to trim and sand the arch support to better match the original as it was causing the end of the I sole to really dig into my arches and was causing me tendon pain. And that was just from walking in them to break them in. They are a good insole, but I don’t think they are a one size fits all.
