warm, over +20C. My Garmin watch didn't get a GPS-fix at the start and it took until #3 for it to start recording.
No major mistakes but not so great running/fitness.

A loop around the Sipoonkorpi National Park. Warm +26 C or so at the start. Around 67 km in total. Almost the same route as in June 2017.
No major mistakes but slow going on the 2nd stage of Jukola this year.
The not-so-dramatic errors were: #2 has a 90-degree wiggle just before the control - my route to #7 was OK but very slow through the green/tick aprts - then no worries until #15 where the 'safe' choice along the road was no good at all - finally a bit of a Z-bend into #17.