Both. Plus a bit of park if you're that way inclined, or singletrack if you've got the gearing and a mamma seat post, or dirt jumping if you fancy... It is simply a very versatile bike for everything. I've ridden mine on dirtjumps, north shore, street, street tirals, 'proper' trials and am also doing the Hampshire comp series on it this year. And to be perfectly honest it feels 'right' for everything I've tried on it. They really are awesome little things! Edit: didn't vote for the above reasons.