At 330 grams who has time to quibble and call these heavy? True, INOV-8 is making lighter-cushier models these days, but this is still my staple shoe for its ability to excell in any and all conditions. Made for a neutral runner or supinators like me. Firm and responsive underfoot with excellent traction on O'ahu's MUD, roots and rocks. Also work well on the road if necessary. In comparison the newer models e.g. roclites are more nimble and do well in the mud during the first weeks of use. My issue with the newer models is primarly a distinct lack of traction on wet surfaces, namely stream beds and rocks and roots in the rainforest, where I do 90% of my trail running. The Terroc 330s rubber is superior for this environment in that it is much softer, more porous and thus stickier. Which lends it self well to quick travel trough the tropical climate. All non-Gortex models drain well, an essential component here in the islands. I also use the Terrocs for fast packing and hiking trips with pack weight around 20#. The older INOV-8s with solely the "Metaflex" outsole (Terrocs, Flyrocs, etc.) tend to fit true to size for me. The newer outsoles with the "Fascia Band" (roclites etc.) require that I upsize 10.5 to 11. Try a pair of INOV-8s and you will see why the other big names are all trying to come out with light weight trail runner.

I didn't think I would find a better shoe than the Inov8 RocLite 315s, but with these Terroc 330s, they have been bested! As with all Inov8s, the theory with this shoe is different than the going orthodoxy in trail running shoes today. This is a minimalist shoe, that is designed to work with the way your foot was designed. There is less support and padding than with other brands, but the go-with-God's-design of the foot, ends up making this a superior shoe. A bunch of your major leg muscles attach under the foot, and somehow Inov8 has figured out a way so that you 'strike' more naturally, in the middle of the foot, than coming down big on the heel. This seems to make for a more comfortable ride, and works well with all those muscle attachments. I used to run in other, 'big heel-lots of padding' shoes, with Superfeet inserts. I would have foot pain after every long run. This week I have run a 19 miler and an 11 miler, with no foot pain at all. Can't recommend them enough...my wife is now running in them and lovin' them as well.

Very durable with well over 500 miles on each pair. Some layers of the tread can peel, but no notable difference in performance. They have always fit well right out of the box. I am a supinator to neutral. Used primarily for ultras and running through Oahu's muddy, rocky and rooty rainforest. I also use this as my primary road shoe for getting to the trails or mixing it up a bit.

I have abandoned cumbersome walking boots for these shoes and I have been really happy. So far I have walked the 92km Great Ocean Walk in Victoria, Australia. The shoes were comfortable on a mixture of sandy beaches, trails and rocky coastal sections.

I also wore the shoes for a four day walk in the rugged Northern Flinders Ranges. This involved clambering up and down boulder strewn creek beds and loose, gravelly peaks. I really appreciated the grippy soles. Especially in the mornings when the rocks were covered with dew.

The shoes were comfortable and felt very light. I carry a pack ( Go Lite Pinnacle) of around 14 kgs for a four day walk.

The transition to ultralight backpacking has been a revelation. I am enjoying the same kinds of wilderness experience with a lot less toll on the body.

I have just bought a pair of mudclaws and will test them out on a three day walk on a coastal trail in South Australia.

I normally wear a size 9'ish (salomon Xa pro 3d 9.5 is a tad loose) so went for a 9.5 in the terroc 330. Fits well, haven't examined it for loose stitching etc, but so far they are holding up well, and are very comfortable.

The rocklite 318 by comparison was way too small (length wise my toes were stubbing the front of the shoe), I could have done with a size 10.

The flite 250 by comparison was very tight in volume (but length is ok), I guess it is meant to be worn with either no socks or very thin ones, so if you plan to wear your normal socks I'd also size up a 1/2 size e.g. I got 9.5s and could have gone with a 10.

I used a pair of these almost out of the box new on my thru hike of the Long Trail last year. I'd used Inov'8's before, but to say I was impressed with the 330's would be an understatement. Never had a blister on the entire hike, even after hiking for days on end in the rain. This year I'm going to do a thru of the Colorado Trail and already have a new pair of TerRoc's ready to go.

These shoes are great! Very comfortable right out of the box.
I tried on about 12 different pairs of shoes (from several different brands), and I liked these the best. I like the level of padding (your foot is fairly level in the shoe instead of sloping forward like many running shoes), the traction, and the stiffness/flexibility of the shoes. The do work well on both trail and road.
I typically run about 30 miles per week, and these shoes seem to be holding up well, and not causing any adjustment problems.

While I already knew and loved Inov-8 shoes, this pair was a surprise for my husband shortly before a 75 mile hike. Even though he didn't want to like them, he loved them--he found them instantly comfortable, sublimely light, and good looking. When these shoes get wet, they wet through quickly which is fine if one stays moving and is in wool socks. Although they dry fairly quickly, we are going to experiment with Sealskinz waterproof socks for fall/winter hiking in the Cascades. The sizing runs pretty close, perhaps a tad small--husband had extra room at the toe, but his feet are very low volume (IMHO a wider foot would have no trouble); still this shoe was very comfortable for hiking with practicaly no break in period.

Lightweight, good traction. No opinion on durability...yet.

These shoes have a long break-in period. I'm a long run out of the box kind of guy, but don't do that with these. Aside from that, I do like these shoes a lot. They look great with jeans, and fit me perfectly. The Flyrock 310 are more suited to the extreme trail running that I do, however. Get the TerRoc if you want a durable shoe for moderate terrain.

This is a comfy shoe with a roomy front but more a light hiker/walker than a runner. Plenty of cushion for those that need it. The traction isn't anywhere up to par with the Flyroc or Mudrock or Mudclaw - I slipped out on too many fast switchbacks that I retired this one to flat trails.

I love the look and feel of this shoe but it does not hold up. pieces of the sole have begun to fall off. The right shoe has a hole in the side wall fabric (which is very thin) and the tongue is tearing in both shoes.
The shoe itself is very comfortable and light weight but it is not durable.

As soon as I put on the Terroc 330's, purchased online at REI, I knew I'd end up returning them. As some reviewers have mentioned happening to them as well, the side of the shoe, on my right foot only, rubbed against the bottom of my ankle bone, as if the shoe was cut too high. But because of one review where someone had the same problem and said that it went away on trail, I decided to keep the shoes and wear them out.
On my first hike of six steep miles on trail I experienced initial irritation leading to debilitating stinging pains as the shoe struck my ankle bone at each painful step. I tried to massage the top of the shoe in an attempt to soften or bend the side down, to no effect. The next day my ankle bone is sensitive even in my old shoes, which never caused me any problems, and I'll have to switch to sandals until it heals.
Even if you try these on in the store and don't feel any irritation I noticed the soles of the shoes, while sticky and grippy, also collect mud and small rocks. Otherwise I thought they were fine, lightweight shoes, but only for my left foot.