What does a 10% grade on a tour stage mean to us?

Tour De France Stage 13 had 10% grades over 4 miles.

Q: What does the (%) percentage mean?

A: It refers to how many feet you’ll ascend per 100 foot of roadway. On a 5% grade, you’ll ascend 5 feet per 100 feet of roadway.

A grade has a percentage and a length. For example, let’s take a 6% grade that is 10 miles long. This means that for every 100 foot of roadway, you are going to climb 6 feet. For each 1% of grade you’d climb 52.8 feet, since 5,280 feet equals one mile.

GRADE %	LENGTH	FEET ASCENDED	FEET ASCENDED PER 1%
4%	4 miles	844 ft	244 ft.
	5 miles	1055 ft
	6 miles	1266 ft
5%	4 miles	1056 ft	264 ft
	5 miles	1320 ft
	6 miles	1584 ft
6%	4 miles	1268 ft	317 ft.
	5 miles	1585 ft
	6 miles	1902 ft
	7 miles	2219 ft
	8 miles	2536 ft
	9 miles	2853 ft
7%	3 miles	1110 ft	370 ft.
	4 miles	1480 ft
	5 miles	1850 ft

"I’M GETTING BORED OF SEEING THIS GUY’S FACE AT THE FRONT OF THE PELOTON ON TELLY.

BUT NOT HALF AS BORED AS RIVAL TEAMS MUST BE OF WATCHING HIS SKINNY ASS DISAPPEAR UP THE HILLS, HAULING ALBERTO, WHILE THEY GET SHELLED LIKE PEAS.

YOU GOT THEM RIFLING IN THE SORE DRAWER EVERY DAY, DANIEL."

Via BIGRING