Drop a GPX file to score how hilly your route really is.
How Hilly
Was That Run?
One number — 0 to 100 — that captures how hard your route felt because of the hills.
Read more about how the score works
What makes a run feel hilly?
It's not just one thing. The score looks at three different questions — and combines them into a single number.
Total feet climbed across the whole run. A marathon with 5,000 ft of gain is simply harder than one with 1,200 ft. More climbing = higher score.
A really steep hill is way harder than a gentle slope — even if they gain the same height. Steep grades get penalized extra hard in the score.
One long 2-mile climb wears you out more than twenty tiny bumps — even with the same total climbing. Long, sustained climbs score higher.
First, We Clean Up the GPS
Your watch makes mistakes — tiny fake hills that aren't really there. Before scoring, the data gets cleaned up so you're only scored on real terrain, not GPS wobble. This matches the same approach Strava uses.
Barely any hills. You'll barely notice.
Some ups and downs. You'll notice, but it won't stop you.
Real climbs. Your legs will feel it.
Serious mountain terrain. Bring snacks.
Flat routes look different from hilly ones. Brutal mountain routes look different from merely hard ones. One number tells the whole story.