World's Top 10 Hardest Cycling Climbs

Mauna Kea
Llano de las Animas
Wuling Pass North
La Muerte
Pozza San Glisente (Dos dell'Asino)
Death Road
Alpe Fuori
Pico de Veleta
Mount Babadag

Climb List: World's Hardest Climbs
(sort by distance, difficulty, elevation and more)

Cycling the World's Hardest Climbs

Top 10 World Bike Climbs - Mauna Kea - visitor center sign - altitude sickness, danger 

World’s #1 Bike Climb -- Mauna Kea

Sign at the Visitor Center: Still 8.3 miles to go at 10.4% average grade to 13,712’.

PJAMM Cycling has personally documented all of the World’s Top 10 Bike climbs.  This has been quite the adventure that has taken us to four different continents to document the world’s top 10 climbs, which we accomplished in May, 2019.   In reverse order, the following is a summary of the Top Hardest World Bike Climbs as defined by the FIETS index (developed by the Dutch cycling magazine Fiets)[1]:

#10 OF 10


 Cycling Top World Bike Climbs  - Rila Bulgaria - mountains, roadway and hairpins in fog and clouds 

Cycling Rila, Bulgaria

Ride 9.4 miles gaining 5,590’ to elevation 8,310’ at 11.2% average grade.

A bit of a chore to get to (that’s an understatement) if you are not living in Bulgaria, this climb is an unbelievable 11% average grade for 15 kilometers along a desolate stretch of broken roadway to two beautiful reservoirs at the finish. The one caveat we submit is that the road is private and there are no guarantees a cyclist will be permitted to ride to the top, although it is certainly possible, as reported in our Climb Summary on the Rila page.

#9 OF 10


Cycling Pico Veleta, Spain

Ride 19.4 miles gaining 7,820’ to elevation 11,148’ at 7.6% average grade.

 Cycling Top World Bike Climbs  - alter Virgen de Las Nievas with Pico Veleta in background 

Photo clockwise from top left

Top left - PJAMM at the top; top right - riding toward Pico de Veleta; bottom right - hairpins ⅓ up;

Bottom left - hairpins just past the gate; Center - Virgen de Las Nieves altar.

This is another of our favorite world climbs.  The first two kilometers are incredibly steep (our two wheel drive support vehicle was put to the test over this segment) while the full climb does not disappoint at an average 7.6% for 31 kilometers.  The road above Hoya de la Mora (kilometer 19) is closed to public traffic which makes for a very pleasurable and peaceful climb (if you can ignore your screaming thighs).

#8 OF 10


 Cycling Top World  Bike Climbs  - Alpe Fuori - bike against sign by gate, road, forest 

Cycling Alpe Fuori, Italy

Ride 7.3 miles gaining 5,210’ to elevation 6,140’ at 13.7% average grade.

Alpe Fuori is in the Pennine Alps (also the home of the Matterhorn).  This is one of three Top 10 World Bike Climbs situated in Italy.  With a 13.7% average grade (23% for one kilometer), this climb deserves its high world ranking.  We climbed this one in the summer of 2018 and there will be no rematch!

#7 OF 10



Cycling the Death Road, Bolivia

Ride 39 miles gaining 11,640’ to elevation 15,200’ at 5.5% average grade.

The Death Road is our all-time favorite climb by road bike.  We included the Death Ride in our 2017 South American Cycling Adventure (also included were Alto de Letras, Colombia, Atacama, Chile and Uturuncu, Bolivia). We spent three days on the Death Road and enjoyed every minute of it -- this is the cycling adventure of all time!

Post Card Corner - Death Road

Bike ride and cycling Top World Bike Climbs  - pjamm cyclist holding up bike at La Cumbre summit sign

Atop one of the highest roads in the world.

#6 OF 10


 Cycling Top World Bike Climbs  - Scanuppia road sign 45% - road and trees 

Ride 4.5 miles gaining 4,200’ at 18% average grade.

Warning:  File:Philippines road sign R3-4.svg - Wikimedia CommonsThe sign at beginning says no bikes.File:Philippines road sign R3-4.svg - Wikimedia Commons

This is a KILLER bike climb - extremely steep (although we believe the sign above may be overstated).  Scanuppia averages 18 percent grade for its entire 7.3 kilometers.  We have ridden this nearly impossible bike climb twice and even with a 28t chainring and 42t cassette on a high-end stiff cross bike, we barely managed it. On the steeper segments (steepest 500m is 24%; our Garmin read 30-32% in a couple of spots) it is very difficult to keep the front wheel from lifting off the pavement.

#5 OF 10


Ride 9.1 kilometers gaining 1,411 meters at 15.7% average grade.

Photo from Jiri Fikejz, Choceň, Pardubický kraj, Česká republika.

#4 OF 10


 Cycling top world bike climb La Muerta, Ecuador, cyclist on road surrounded by forest. 

Ride 45 miles gaining 14,670’ to elevation 13,595’ at 5.4% average grade.

This beast is 72.5 kilometers up to 4,144 meters at 5.4% average grade.  Unfortunately, on the day we climbed this one by bike, the weather conditions were horrendous and we have no scenic shots from our ride.

#3 OF 10


Cycling Wuling Pass, North

Ride 14.8 miles gaining 7,855’ to elevation 10,746’ at 9.8% average grade.

This climb has what you’d expect in the #3 Top World Bike climb: a 10% average grade for 15 miles (3 miles at 16.5%!).

#2 OF 10


Cycling Llano de las Animas, Spain - bike parked against guardrail overlooking ocean next to rusty sign that reads "Feel the's a present!!" with a smiley face

Ride 15.6 kilometers (9.7 miles) gaining 2,000 meters (6,560’) at 12.6% average grade.

Dani Avila, Spain, tard0d lifestyle.

The gradient profile for this climb says it all - there are several segments of extraordinary steepness.  Add the length and altitude of this climb and you have the legitimate runner up to Mauna Kea for World’s Top Bike Climb.

Start of the concrete.

Remaining:  2.9 km @18%.

#1 OF 10



Cycling Top World Bike Climbs - road, volcano, clouds on Mauna Kea 

40% less oxygen at 13,000’ than sea level . . .

. . . makes 12% feel like 20+.

The hardest bike climb in the World is Mauna Kea, Big Island, Hawaii, and is also by far the most difficult bike climb in the world.  Mauna Kea has it all: length (42.5 miles), altitude (sea level to nearly 14,000’), and gradient (the last 10 miles are from 8,120’ to 13,779’ at 10.7% average grade).

Enough said  😟😟

Top US Bike Climbs - Mauna Kea elevation profile

The gradient ramps up at mile 30 and averages 10.4% for the final 12 miles from 7,200’ to 13,811’ at the finish.

We have climbed Mauna Kea 4 times - 2011, 2013, 2014, 2018.  

Cycling Top World Bike Climbs - road, volcano, clouds on Mauna Kea

Diving into the clouds at 13,700’

[1] This website is primarily about climbing by bike. We have chosen to use an objective index to quantify and rank climbs - The Fiets Index (developed by the Dutch cycling magazine Fiets).

The actual formula is: [H^2/D*10] + (T-1000:1000; but only if greater than 0)

H = ending elevation minus starting elevation in meters.

D = total distance traveled in meters.

T = Height in meters.

Note: Only add T-1000 if that number is greater than zero. ​