Inov-8 X-Talon Ultra 260
260g (men's UK 9) £135
Inov-8 uses the phrase 'Industry-leading sticky grip' when it comes to the outsole and while we can’t vouch precisely for that claim, we can confirm they’ll hold you in place in the muddiest, nastiest conditions you treat them to. Only something very special would be better in this department. For runners who like a bit of depth, consider this: the lugs are a mighty 8mm and positioned in such a way they ensure mud is released quickly from the outsole, so there's no clogging and maximum grip is retained. All good off-road, but you do need to keep them away from anything concrete otherwise they'll wear rapidly.
Verdict: Bring on the mud! These are built for the nastiest weather.