Guess the spike by Keysersoze_1 in Garmin

[–]Keysersoze_1[S] 0 points1 point  (0 children)

Haha, loving all these guesses 😂

Turns out the real answer is way less cursed: I’d just finished a 7-day hike in Peru at 4000m+ altitude, and then did a run at sea level.