One more time for the non-metric:
The Everest challenge goes up to ~164,041ft. The first ~29,035ft gets you to the top of Everest and if I remember correctly will complete the challenge. However, if you complete the remaining ~135000ft, you will unlock the Zwift Concept Z1 aka “Tron” bike . So, if you want that “Tron” bike, leave the Everest challenge selected and keep on climbing until you reach 100%.
@DStankard Guessing here, but the math appears to work: Your 24% is relative to the entire ~164,041ft, meaning you are 24% of the way to the TRON bike. Meanwhile, your wife’s 83% is relative to the first 29,035ft or the Everest Challenge which puts her at ~24,099ft.