Costa Rica Cerro de la Muerta
Cerro de la Muerta Bike Climb - PJAMM Cycling

48.2
PDI
28.9 mi
DISTANCE
8,212 ft
GAINED
5.3 %
AVG. GRADE
FULL CLIMB STATS
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INTRO

Cerro de la Muerta - "Mountain of Death" - is one of the longest continuous climbs in the world, following Costa Rica's Inter-American Highway (Ruta 2) from San Isidro de El General up to the highest point on the highway near Cerro Buena Vista, at nearly 11,000 ft. It's 28.92 miles long with 8,212 ft of gain, averaging 5.3% - a genuinely massive undertaking that places it among our toughest ranked climbs in the world.

The name comes from the days before the highway existed, when crossing these mountains from the Valle Central meant a three- or four-day journey on foot or horseback, and many ill-prepared travelers died of exposure to the cold and rain. The road that replaced that journey is entirely paved but still demanding - narrow, steep-sided, and prone to sudden weather swings from bright sun to fog, rain, and cold within the same ride. 

We first rode this climb in May 2017, right in the middle of Costa Rica's rainy season, and were socked in with rain and fog for most of the ascent. By rider accounts we've since gathered, clear days reward you with sweeping views of rugged, tropical mountains the whole way up. Traffic on Highway 2 - a major commercial route between San José and San Isidro - is the real challenge here: buses and heavy trucks share the road with no shoulder, so this isn't a climb for cyclists who get nervous sharing a narrow lane with big vehicles.

PLAN YOUR ROUTE

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The grade is remarkably steady for a climb this long, averaging 5.3-5.6% over nearly 29 miles and rarely exceeding 8% anywhere on the route. There's a false summit around mile 25 near Restaurante de Georgina, where the road dips slightly downhill for about 0.7 miles before a final 5.2% push over the last 3 miles to the true top near 11,000 ft. It's less about any one brutal pitch and more about sustaining effort - and managing a 20-degree-plus temperature drop - over hours in the saddle.
Roadway: Paved the entire way, but the surface is uneven in places with potholes and tight, steep-sided curves - this is a mountain highway, not a smooth resort road. There's little to no shoulder for most of the climb.

Traffic: This is the real hazard on Cerro de la Muerta. Highway 2 is a major commercial route linking San José and San Isidro de El General, so expect a steady stream of buses and heavy trucks. Drivers generally give cyclists room, but on tight switchbacks with oncoming traffic, passes can come close - ride with a flashing rear light even in daylight.

Parking: The climb begins at the highway junction in San Isidro de El General. Park in town, or arrange a shuttle from San José, about a 3-hour drive away.
Pack for a real temperature swing - it can be shirtsleeve weather (70°F/20°C) at the base in San Isidro and down near 52°F/11°C at the summit, with fog and rain possible at altitude regardless of season. Bring a packable rain shell and warm layer for the descent, plus a flashing front and rear light given the highway traffic and lack of shoulder. Restaurante de Georgina, at roughly mile 25 (km 40) near the false summit, is the one reliable food and water stop on the entire climb - plan around it.
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Base in San José or San Isidro de El General. Note that Central America's rainy season runs roughly May through November - the reverse of what many U.S. riders expect - so weather can turn quickly even outside the "wet" months. If you're driving to the start, San José traffic is heavy and chaotic at nearly all hours, so have your route (including the rental office address) programmed into a GPS before you set off. This isn't a stand-alone destination climb worth a special trip on its own, but if you're anywhere in the area, including San José, it's well worth the effort to ride.

ROUTE MAP

MEMBER RATING

Difficulty: Strenuous
4/5
Road
3/5
Traffic
5/5
Scenery

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May 11, 2026
difficulty: Strenuous
scenery: 5
traffic: 3
road: 4
May 11, 2026
scenery: 5
traffic: 3
road: 4
Cerro de la Muerte was spectacular. The scenery, the dramatic shifts in weather, and the long, steady climb create an experience that stays with you. One moment you’re in the sun, the next you’re in fog, rain, or cold, but the mountain’s beauty pushes you forward. Cars pass, but they respect cyclists. It’s a climb that demands preparation, but rewards you with unforgettable moments.
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CLIMB SUMMARY

Climb Summary

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Gorgeous climb out of San Isidro, Costa Rica

Regrettably, we tackled this Top 50 World Climb during the Central American rainy season (May, 2017) and missed most of the breathtaking views of the steep, lush mountains surrounding us along this climb.  The literal translation of Cerro de la Muerta is “hill of death”:

“Cerro de la Muerte is the highest point in the Costa Rican section of the Inter-American Highway. Its name means "Mountain of Death" or "Summit of Death," since in the past crossing the mountains from the Valle Central meant a three- or four-day journey, on foot or on horseback, and many ill-prepared travelers succumbed to the cold and rain. However, the peak is now easily accessible since the highway runs close by.” Wikipedia 

This was leg 2 of my Central America Top 100 climbs trip – Mombacho Volcano, Nicaragua was my first stop and boy, was that an adventure!  I had planned in advance to meet Gabriel, a young cyclist I had met through Strava who lived in San Jose, Costa Rica and had ridden Cerro de la Muerta before.  Gabriel suggested that we leave San Jose at 4:30 a.m. for the 3 hour trip to San Isidro de El General – the beginning of the climb.  

Well, the best laid plans and all . . .  the “earliest” (only) flight from Managua to San Jose didn’t leave until late evening and I did not arrive at my hotel until 11 p.m..  After putting the bike together, I hit the sack after midnight, but was up by 4 a.m. and ready to roll – excited to take on the mighty Mountain of Death with my Costa Rican cycling guide.  But by 4:45 a.m. . . . no Gabriel.  I logged onto email and received Gabriel’s message that he was very ill and regrettably could not accompany me for the ride that day.  No matter . . . I was off.

Two things about this one that are memorable (in addition to the spectacular climb, of course) – (1) traffic in and around San Jose is horrible – extremely busy and chaotic late at night when I arrived and so to that early a.m. when I began my great adventure (travel tip:  rent the GPS with your car and have the attendant program your main destinations at the rental office, including the rental office address), and (2) the rainy season is the reverse of the U.S. – Central America rainy season is roughly May to October.



Off into the bustling streets of San Jose and points south I went, alone, undeterred and excited for the climb ahead.

While the distance from San Jose to San Isidro de El General is a modest 133 kilometers (82 miles), the traffic around San Jose was a bear and getting up and over the very narrow and steep Highway 2 between San Jose and San Isidro is very slow going as this is a commercial route between those two major Costa Rican cities.  Since the climb on both sides of the mountain are very long (totaling about 60 miles / 120 km) and there are no passing lanes or turn outs to speak of, the going averages around 20 miles per hour (32 kmh) with traffic. While it took me three hours to get those mere 80 miles, the good news is that I did not get lost and all systems were GO!

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     We are briefly in an commercial/urban area.  

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But quickly climb and stay in a very rural area                    

The climb itself is challenging as it averages 5.6% for 29 miles (46 km), making it one of the longest continuous grades in the world.  The grade is fairly steady, never appreciably exceeding 8%.

Except for the traffic along this road, the climb is extraordinary (much of that comes from reports provided by others since I was socked in with rain and/or fog most of the climb).  I am told there are magnificent views of the rugged and tropical mountains as we ascend (although he missed the bell for my ride, Gabriel will travel to and document the climb for us in late 2017).  The views I did glimpse were outstanding and the roadway was always surrounded by lush tropical greenery.

The only non-weather-related negative about this climb is the traffic.  There are a fair amount of big rigs and buses traveling this pass and, although they often struggle slowly up the hill, they can pass close and at higher speeds when they are gathering steam for an upcoming steep stretch.  This climb is not for cyclists nervous around and/or sharing a narrow road with no shoulder with big vehicles  I did not have any bad encounters, but traffic does necessarily come close, particularly if there is oncoming traffic and traffic in our direction cannot give us the mandatory 1.5 meters required in Costa Rica.

   

O.k. - now that looks good . . .         

                                       

But, in real life . . . .

There is a nice and friendly cafeteria (Restaurante de Georgina) at mile  25 (kilometer 40), just at a false summit (continue riding .7 miles slightly downhill until the 3 miles/4.8 km final 5.2% segment to the top at nearly 11,000’.  

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The end of a very wet day . . .

Climbing to altitude - even in Central America - come prepared for a 20 degree temperature change - on our trip, it was 70 (20 celsius) (degrees, shirtsleeve weather in San Isidro de El General but low 52 (11c)  at the top.

PJAMM Final thoughts:  Cerro de la Muerte is a very long and challenging climb to altitude.  The roadway is a bit hazardous, so definitely beware there – bring flashing rear lights.  This is not a “destination climb” (we would not make a special trip for this one, in other words), but, if you are anywhere in the area (even San Jose), it is worth the effort to get to and ride up!

Steepest Gradients by Distance

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