Nike LunaRacer 4 Review

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The Nike LunaRacer 4 is a pleasantly simple, light weight, every day running shoe. There is no particular novelty or unique feature, but Nike's done a good job at producing a functional shoe. I only have 2 significant complaints, the first being the appalling shape of the toe box, but that's a flaw shared by the overwhelming majority of modern running shoes. The other problem is that it has a little bit more of a drop than I'd like, though it was never enough to make me feel like I was running in high heels. I rated the LunaRacer as "recommended", and were it not for the two problems I do rated it higher. Even with the toe box cut open I found the non-anatomical forefoot shape to be a little annoying. I'm hopeful that Nike will improve the LunaRacer over time as they have with the makings of an awesome running shoe. (I use The Science of Running Shoes as the basis of how I test running shoes and what you should look for in a running shoe.)

Nike LunaRacer top
Nike LunaRacer outside
Nike LunaRacer bottom
Nike LunaRacer inside

1 Characteristics

  • Cushioning . The LunaRacer uses Nike's "Lunarlon" foam, which they claim is 30% lighter than their usual foam. I found it to be on par with many of the better running shoes I've tested. It's broadly similar in cushioning to the Asics Gel Hyper Speed and not far behind the Hoka Clayton, which is an impressive achievement. The cushioning is as smooth and even as you'd expect from a modern running shoe and the cushioning-to-weight ratio is up with the best of them.
  • Drop. The LunaRacer has too much drop for my tastes, and is on the edge of what I can tolerate at 7mm. The large drop is one of the downsides to the LunaRacer and combined with the poor toe box shape prevented me rating it higher.
  • Structure. The LunaRacer has a dual density midsole, which normally implies a Medial Post. However, in this case it's actually a soft foam midsole surrounded by a slightly firmer and harder wearing foam.
  • Flexibility. The LunaRacer has a similar flexibility to other lightweight running shoes. If you look at the photos of the soul, you'll see some lines that look like they might be gaps in the foam rather like the Nike Free. Sadly, that's not the case and these are just very shallow grooves. Given that the hard rubber outsole is only in small patches, I'd expected a somewhat more flexible shoe, but that's not the case. The LunaRacer does have a tendency to want to bend in just one specific line, corresponding to a gap in the hard rubber outsole patches. So it has pretty good flexibility, and I've got no complaints, but perhaps I just had overly high expectations.
  • Outsole. The LunaRacer has harder rubber outsole patches, they are placed in the primary contact points. In addition, the exposed midsole foam is slightly harder wearing than the inner foam that provides the bulk of the cushioning. If you are a forefoot runner that lands on the outside edge of your forefoot consistently, you might find a little bit of extra wear in that spot, but I don't expect that to be a big deal.
  • Shape. The LunaRacer is nothing like the shape of the human foot, so the toe box needs to be cut open. The LunaRacer is a perhaps slightly worse than an average running shoe, and given how bad a typical example of a modern running shoe is, that's pretty bad. (I recommend cutting open the toe box of virtually all running shoes, with the exception of a few shoes like some Altra shoes. When you have some worn out shoes, you should try cutting open the toe box. I've found that it's a big improvement, allowing my toes to move naturally and engage for toe off, as well as reducing the possibility of blisters.)
    My LunaRacers, cut open.
  • Upper. The upper is light weight, and very open for good breathability. It has no seams, but it does have an odd reinforcement band around the midfoot. This is where the upper forms loops for the laces and goes back down to the midsole, which seems a little peculiar and pointless, but it's mostly harmless. There is a modest amount of padding around the ankle opening and I found it to be a comfortable shoe once I cut the toe box open.
  • Tongue. The LunaRacer has a traditional style of tongue that's completely unpadded. I found I needed to pay attention when putting it on to make sure the tongue was flat as it easily gets worked up.
  • Lacing. The LunaRacer has flat laces that work how laces should and don't come undone mid-run.
  • Heel Counter. The LunaRacer is only a tiny hint of a heel counter, and it's only purpose seems to be to keep the shape of the shoe when it's sitting on the shelf. I'd rather Nike had left it out, but it's harmless.
helping-hand.jpg

2 A Comparison with other Recommended Shoes

For a more detailed comparison of these shoes see the Recommendations for Best Running Shoes. This table lists the key attributes of What to Look for in Running Shoes. For more detailed information, on the shoes see detailed shoe comparison.

Full Review Name Rating Recommended
price
Benefit Weight
(oz)
Penalty
(sec/mile)
Forefoot
Thickness
Heel
Thickness
Loaded Drop
mm
Cushioning Flexibility
Asics 33-DFA Review 33-DFA Worth considering $90 5.7 10.6 16.5 27 27 0 6.1 6
Saucony Type A6 Review A6 Highly Recommended $100 8.2 6.1 9.5 17 21 4 5.0 8
Adidas Adios Boost 2 Review Adios Worth considering $140 4.7 8.6 13.4 17 27 11 4.0 7
Hoka Bondi Review Bondi Highly Recommended $150 8.0 10.9 17.0 41 45 5 8.8 0
Hoka Bondi 5 Review Bondi Review Pending $150 6.1 11.6 18.1 38 42 5 7.1 4
Hoka Clayton Review Clayton Best of the Best $150 8.8 8.3 12.9 26 30 3 7.3 5
Hoka Clifton 3 Review Clifton3 Best of the Best $130 9.1 9.8 15.3 34 38 3 8.9 6
On Cloudracer Review Cloudracer Worth considering $130 5.7 8.2 12.8 19 27 5 4.7 8
Hoka Conquest Review Conquest Worth considering $170 5.0 11.9 18.5 28 34 5 6.0 3
Saucony Cortana 4 Review Cortana Worth considering $150 4.4 9.9 18.7 22 28 5 4.3 5
Mizuno Wave Cruise Review Cruise Worth considering $120 6.6 5.9 12.5 17 20 7 3.9 7
Newton Distance IV Review Distance Worth considering $155 7.5 9.1 14.2 26 31 3 6.8 6
Asics Gel DS Racer 10 Review DS Racer Worth considering $110 8.2 7.0 10.9 21 26 6 5.8 6
Mizuno Wave Ekiden 8 Review Ekiden Worth considering $115 5.7 5.7 14.6 13 18 6 3.2 8
Saucony Endorphin Review Endorphin Highly Recommended $125 11.1 4.1 6.4 14 13 -1 4.5 9
Adidas Energy Boost Review Energy Worth considering $160 7.2 10.0 15.6 20 30 7 7.2 6
Altra Escalante Review Escalante Review Pending $130 9.1 8.7 13.5 28 25 -1 7.9 7
Puma Faas 100 R Review Faas 100 Highly Recommended $90 8.4 6.1 9.4 15 20 1 5.1 9
Saucony Fastwitch Review Fastwitch Highly Recommended $90 9.5 7.1 11.1 20 22 4 6.8 8
Topo Fli-Lyte Review Fli-Lyte Highly Recommended $100 6.0 9.4 14.6 23 24 4 5.6 6
Nike Free 4.0 Review Free Recommended $120 5.3 8.2 13.6 24 30 6 4.4 6
Saucony Freedom Review Freedom Recommended $160 5.4 10.7 16.6 25 29 3 5.8 7
Asics Gel Lyte 33 3 Review Gel Lyte Not recommended $90 8.0 7.3 11.4 17 24 4 5.8 9
Skechers GOmeb Speed 3 Review GOmeb 3 Worth considering $120 6.9 8.1 12.6 20 24 4 5.5 8
Skechers GORun 4 Review GORun Not recommended $100 6.1 7.5 11.7 15 23 3 4.5 7
Skechers GOrun Ultra 2 Review GRU Worth considering $90 7.5 10.0 15.6 28 34 8 7.5 5
Skechers GOrun Ultra Road Review GRU-R Worth considering $105 6.5 11.3 17.6 30 40 6 7.4 7
Asics GT 2000 Review GT 2000 Not recommended $120 4.8 11.2 17.4 28 35 5 5.4 4
Hoka Hupana Review Hupana Recommended $115 6.1 8.9 13.9 31 36 7 5.4 5
Asics Gel Hyper Speed 7 Review Hyper Speed Highly Recommended $75 10.9 6.3 9.8 22 26 5 6.8 7
Altra Instinct 3.5 Review Instinct 3.5 Recommended $115 4.9 9.3 15.2 24 23 0 4.5 6
Altra Instinct 4.0 Review Instinct 4.0 Review Pending $120 6.0 9.8 15.3 29 25 -1 5.9 6
Asics Tarther Kainos 3 Review Kainos Worth considering $130 10.0 6.9 10.7 17 27 9 6.8 7
Saucony Kinvara 7 Review Kinvara Best of the Best $110 7.4 8.2 12.8 23 27 3 6.1 6
Nike LunaRacer 4 Review LunaRacer Recommended $90 9.9 7.0 10.9 22 30 7 6.9 6
Nike LunarSpider R5 Review LunarSpider Recommended $125 6.9 6.7 10.4 17 21 3 4.6 7
Hoka Mafate Speed Review Mafate Best of the Best $170 7.6 11.9 18.5 39 40 4 9.0 3
Pearl Izumi EM Road N0 v2 Review N0 Highly Recommended $100 7.9 6.5 10.1 14 20 4 5.2 8
Saucony Nomad Review Nomad Review Pending $110 4.3 10.5 17.2 25 27 2 4.5 5
Hoka Odyssey Review Odyssey Highly Recommended $130 8.5 9.4 14.6 37 45 5 8.0 4
Altra Olympus Review Olympus Highly Recommended $130 5.4 11.8 18.4 27 27 3 6.4 4
Altra One 2.5 Review One Highly Recommended $100 8.5 7.1 11.1 22 25 2 6.0 8
Altra Paradigm Review Paradigm Highly Recommended $130 6.4 9.9 15.4 25 25 1 6.4 4
Asics Piranha SP 5 Review Piranha Recommended $100 10.1 4.2 6.5 11 15 3 4.2 9
Brooks PureFlow 5 Review PureFlow Worth considering $110 6.0 9.7 15.1 26 29 5 5.8 8
Salming Race Review Race Worth considering $130 6.9 6.5 10.1 16 19 4 4.5 7
New Balance RC1600 v2 Review RC1600 Highly Recommended $110 8.8 5.6 8.7 15 21 5 4.9 8
New Balance RC5000 Review RC5000 Best of the Best $125 12.2 3.4 5.3 13 17 3 4.2 8
New Balance RC5000v2 Review RC5000v2 Best of the Best $125 14.2 4.0 6.2 13 21 6 5.7 8
Skechers GoRun Ride 3 Review Ride Worth considering $85 5.9 8.5 13.2 18 28 6 5.0 9
Inov-8 RoadXTreme 220 Review RXT-220 Worth considering $120 5.2 8.0 18.2 14 17 3 4.2 9
Topo ST-2 ST-2 Highly Recommended $90 8.2 7.3 11.4 20 18 0 6.0 8
Hoka Stinson Lite Review Stinson Highly Recommended $160 7.3 11.6 18.1 35 40 6 8.5 2
Nike Zoom Streak LT 3 Review Streak LT Best of the Best $80 8.8 5.4 8.4 16 21 4 4.8 6
Adidas Takumi Sen 3 Review Takumi Sen 3 Highly Recommended $160 7.7 6.6 10.2 17 21 4 5.1 6
Altra Torin 2.0 Review Torin Worth considering $125 5.8 9.6 14.9 28 25 -1 5.5 5
Hoka Tracer Review Tracer Recommended $130 7.2 7.4 11.5 21 24 2 5.3 6
Merrell Trail Glove 3 Review Trail Glove Best of the Best $100 2.9 6.9 24.7 11 11 0 2.0 9
Topo Tribute Review Tribute Recommended $100 5.9 7.3 11.4 20 18 -1 4.3 7
Mizuno Wave Universe 5 Review Universe Highly Recommended $125 10.7 3.1 10.6 9 12 1 3.3 9
Merrell Vapor Glove 2 Review Vapor Glove Highly Recommended $85 2.1 6.1 27.6 6 5 0 1.3 10
New Balance Vazee Pace Review Vazee Pace Worth considering $110 6.0 8.6 13.4 18 24 6 5.2 6
Asics TartherZeal 3 Review Zeal Worth considering $140 10.9 6.3 9.8 17 27 9 6.8 7

It's not a running shoe, but I love the Hoka Tor Ultra hiking boot and I've tested the Altra Lone Peak Boot.
Older shoe reviews: Saucony Hattori Review, Mizuno Cursoris Review, Skechers GO Bionic 2 Review, Hoka Clifton Review, Saucony Virrata 2 Review, Brooks PureCadence 3 Review, Brooks PureConnect 3 Review, Brooks PureFlow 3 Review, Skechers GO Bionic 2 Review, New Balance 980 Review, Brooks Transcend 2 Review.
Reviews of shoes that are not worth including on the table: Hoka Huaka Review, Patagonia EVERlong Review.