Yeah, the fixed thing brought everyone from fixed mixte riding lasses to bike couriers, alley cat racers to old school fixed road hardmen, on top of the normal mix of cx racers (which runs from full lycra clad/UCI legal bikes through stuff like mine - SS, flared drops, wider tyres but on a normal cross frame - to MTBs etc). Lots of beer after - we hire a communal sauna for post ride warming up Number 10 is a multiple Finnish championship winner (track, road, cross, MTB) who rides the series under the pseudonym 'Bruce Wayne' wearing a cape, mask and full body fringed bat outfit!
There didn't used to be pretty much any CX races in Finland other than the national championships, so a bunch of couriers and bike shop guys started a series for mostly cross type bikes on mostly cross type terrain. It's unofficial, so it's way easier to mark out a track using forest singletrack and fireroads with some grassy/muddy bits than hiring/stealing a lawn, park or school playing field for a fully grass type traditional track. Rules are somewhat relaxed - tyres under 2" and rigid forks/drop bars qualify for series points. And of course MTBs welcome but no points scoring. Mostly just for fun, and sometimes just to see what course a CX bike can actually be ridden round!
This year a complementary series has started up, with stricter rules - 35mm or less tyres - and more 'normal' CX courses, though still most of the races are towards the technical end of the normal CX spectrum and less grassy just as it's easier finding courses. Most of them are not too different to the more technical regional races in the UK. More 'normal' and UCI legal cross bikes at this one, as lots of folk buy them as commuters or to ride gravel/fire roads.
As more of an MTBer than road or CX rider I find the courses a great mix of the technical and the 'chucking up a lung' all out speed sections - usually lots of short sharp hills that are borderline doable on single speed, short blasts connecting the mud/hills/singletrack etc. The one by the beach involving multiple dismounts and runs through the sand was fun!
Same for me, was around 2 mins down, all on the last lap, but luckily that was only 2 places as we'd put in a good gap when I was battling for 3rd and 4th before then.