Nike ACG Ultrafly Trail Baltic Blue

Baltic Blue gives the ACG Ultrafly Trail a cold, alpine look to match where the shoe is happiest. High above the treeline the surface changes constantly, and this one answers with a firm platform, an aggressive tread and an upper that holds the foot steady through side-hilling and rock hopping. Nothing in the build is there for comfort alone.

Choose it for mountain races, long days with real vertical gain and routes where slipping costs time. Drainage is quick after stream crossings, so the shoe does not stay heavy, and the toe protection handles accidental contact with stone. Runners used to cushioned road shoes should expect a noticeably more connected, firmer ride underfoot here.

Good to know

• True to size for most runners; the snug forefoot means wide feet will want half a size more.
• Brand new, shipped in its original box.
• Questions before you order? We reply within 24 hours.