“The hikers began their ascent, facing the challenging uphill with determination.”

“The tyres' bigger gyroscope boosts rotational inertia on moderate uphills, flats, and downhills.”

“The trails should provide a skiing flow so there aren't too many long uphills or sharp turns at the bottom of steep downhills.”

“An advanced skater only uses a side-to-side arm swing for short sprints at a race starting line or for steep uphills.”