OK I’m just jealous that the most extreme thing I’ve done in the last couple of years is to find a new track through my local park that went vaguely near a tree I hadn’t seen before.
Although I was chased by a terrier recently. That was extreme. Well, extremely annoying.
Ah! The glory days of heli-boarding in Colarado.
Last Updated on 14 January 2026 by the5krunner
tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors.
it’s the new Suunto Spartan Ultra.
And finally a left side place barometer! preventing false readings because of (sweated) skin interference.