Inov8
Trailfly Speed V2
A low, grounded trail shoe with strong ground feel, a secure heel and grippy 4 mm lugs for roots, rocks and mud. It's stable and protective for its weight, but the thin midsole limits long days.
What's new: New POWERFLOW PRO foam, stickier graphene rubber, a tougher dual-layer upper with protective overlays and a reshaped, padded heel that fixes the V1's slippage.
About the Trailfly Speed V2
Faster-paced training and racing on hard, rocky trail is the brief for the Trailfly Speed V2. Within Inov8's Trailfly series it offers a lower platform than the everyday Trailfly V2 and a 4 mm drop rather than that shoe's 6 mm, while the Trailfly Zero V2 goes further with no drop at all. Inov8 lists its cushioning as low.
The V2 moves to a POWERFLOW PRO midsole, paired with a BOOMERANG footbed whose foam beads the brand says return 40% energy per stride, and a META-PLATE rock plate. Graphene-enhanced G-GRIP rubber with 4 mm lugs covers the outsole, and Inov8 claims more wet grip than its earlier models. The upper is a single-piece air mesh with MET-CRADLE strips running from midfoot to heel. NATURALFIT comes in Standard and Wide versions, and Inov8 quotes a weight of 299 g.
Specs and features from inov-8.ca and our own spec data. A factual overview, not a review.
Video reviews
What the critics say
78/100 review score
- Road Trail Run 8.1/10
- RunRepeat 76/100
The reviews in briefRoad Trail Run's David Reichl and Jen Schmidt found the Inov8 Trailfly Speed V2 stable and secure on rocky, muddy trails, though Reichl thought the forefoot very wide for narrow feet. 220 Triathlon's Jude Palmer loved its nimble ground feel, while RunRepeat's Carlos Sánchez found it firm, heavier than expected and weak on wet surfaces.
- Positive: Stable and confident over roots, rocks and technical ground
- Positive: Secure heel and midfoot hold
- Positive: Good grip on rocky, loose and muddy trails
- Mixed: Road Trail Run's testers found it grippy in mud, but RunRepeat's lab found weak traction on wet surfaces and 220 Triathlon found mud grip less effective
- Negative: Thin midsole gets uncomfortable on longer runs
- Negative: Very wide forefoot doesn't suit narrow feet
Paraphrased from published reviews. Read them in full:
The numbers
- Trail
- Type
- 299 g
- Weight
- 21 mm
- Heel stack
- 4 mm
- Drop
- No plate
- Plate
- Inherently stable
- Support
Weight for a men's US 9 / UK 8.5.
What it feels like
Fit
True to size
Regular sizing with a very wide forefoot and a narrower heel, so narrow feet may feel loose up front; a wide version is also made.
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On TikTok
Trailfly Speed V2 on TikTokShort reviews and wear tests from runnersWhere to buy the Trailfly Speed V2
RRP around £140. Tap through for today's price.
Inov8 Trailfly Speed V2
In short
Ideal if you like a low, close-to-the-ground feel on technical, rocky trails and races up to around 50 km. Wet grip is a weak point, and narrow feet may find the forefoot too wide.
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