Mexican Federal Highway 175 runs 579 km (360 miles) from Buenavista in Veracruz, in the north, to Puerto Ángel on the Pacific coast of Oaxaca, and it is the most concentrated mountain motorcycle road in southern Mexico. It matters because of what it crosses. Oaxaca City sits roughly in the middle of it, and from there Highway 175 goes north over the Sierra de Juárez and south over the Sierra Madre del Sur — two separate mountain systems, both with peaks above 2,500 m, in a state where most of the land sits above 2,000 m. The southern half, from Oaxaca City down to the coast, is the section riders come for. It is also slow, and since February 2024 there is a fast alternative, which changes the calculation entirely.
Why Oaxaca is mountain country
Oaxaca covers 93,967 km² (36,281 square miles) and has one of the most rugged terrains in Mexico. Elevation runs from sea level to 3,759 m (12,333 ft), averaging around 1,500 m (4,921 ft), and most of the state sits above 2,000 m. Three mountain systems converge here. The Sierra Madre del Sur runs along the Pacific coast with an average width of 150 km (93 miles), a minimum height of 2,000 m and peaks over 2,500 m (8,202 ft) — locally it is called the Sierra de Miahuatlán where Highway 175 crosses it. The Sierra Madre de Oaxaca comes in from the Puebla and Veracruz borders, averages 2,500 m in altitude with peaks over 3,000 m (9,843 ft) and about 75 km (47 miles) in width, and includes the Sierra de Juárez and the Sierra de Ixtlán. Zempoaltépetl, at 3,396 m (11,142 ft), is the highest named peak in the state after the overall maximum.
The consequence for a rider is that there are essentially no flat sections. Between these ranges the state consists of narrow valleys, canyons and ravines, and the mountains fall abruptly into the sea along 533 km (331 miles) of coastline. Average distances mean very little here. Time on the road is the only useful planning unit.
Route at a glance
| Highway 175 total length | 579 km (360 miles), Buenavista, Veracruz to Puerto Ángel, Oaxaca |
| Southern crossing | Oaxaca City over the Sierra Madre del Sur to the Pacific at Puerto Ángel |
| Northern crossing | Oaxaca City over the Sierra de Juárez towards Tuxtepec and Veracruz |
| Range heights | Sierra Madre del Sur peaks over 2,500 m; Sierra Madre de Oaxaca peaks over 3,000 m |
| Fast alternative | Barranca Larga–Ventanilla toll road, 104.3 km, opened February 2024 |
| Rainy season | Summer and early autumn |
| Rainfall range | 430 to 2,700 mm a year depending on region |
Open the Oaxaca City to Puerto Ángel line in Google Maps — waypointed through Miahuatlán and Pochutla so it follows Highway 175 rather than diverting onto the new toll road, ready to send to your navigation.
South from Oaxaca City to the Pacific
This is the classic ride. Highway 175 leaves the Central Valleys around Oaxaca City, climbs into the Sierra Madre del Sur, and works its way south through Miahuatlán and over the crest before dropping to Pochutla, crossing Federal Highway 200 and reaching the Pacific at Puerto Ángel.
The character is relentless: hundreds of corners, almost no straights long enough to relax on, and altitude that changes constantly. The road climbs from the valley floor into pine and cloud forest, runs along ridgelines where the cloud sits at road level for hours at a time, and then descends into hot coastal country in the space of an afternoon. The village of San José del Pacífico on the crest is the traditional stopping point, and the reason is simple — it is where the view opens up and where the temperature is at its most comfortable.
It is slow. That is not a criticism, it is the planning fact. On a road with this corner density, this much altitude change and this much village traffic, a distance that looks like a two-hour transit on a map takes most of a day on a bike. Build the schedule around daylight hours rather than kilometres.
The new toll road, and why it matters to riders
In February 2024 the Barranca Larga–Ventanilla highway opened, a 104.3 km (65 mile) toll road connecting Highway 175 at Barranca Larga to Highway 200 at Ventanilla near Puerto Escondido. It cuts the journey between Oaxaca City and the coast dramatically, and it went through fifteen years of construction and considerable local controversy before it opened.
For a rider this is good news rather than a loss. It means you can ride the mountain road in the direction and on the day you want it, and use the toll road for the return leg or when the weather has turned. It also means that a large share of the coastal traffic — buses, lorries, holiday cars — now takes the fast route, which leaves the old road quieter than it has been in decades. The standing advice for Mexico is to use toll roads (cuotas) rather than free roads (libres) where a choice exists, and here you genuinely have one.
North from Oaxaca City over the Sierra de Juárez
The northern half of Highway 175 gets far less attention and is arguably the better road. It climbs out of the Central Valleys into the Sierra Madre de Oaxaca — the Sierra de Juárez and Sierra de Ixtlán, averaging 2,500 m with peaks over 3,000 m — and crosses towards the Tuxtepec region and eventually Veracruz.
The riding is cooler, greener and wetter than the southern crossing, running through cloud forest and pine-oak that stays damp for much of the year. Ixtlán and the villages of the Sierra Norte are the natural stops. Because this side sees far less tourist traffic, road surface and services are less predictable, and it rewards a shorter daily distance and a willingness to turn round.
Season, safety and practical detail
Season. Oaxaca's rain comes in summer and early autumn, and rainfall across the state ranges from 430 to 2,700 mm (17 to 106 inches) a year depending on which side of which range you are on. The dry months, roughly November to April, are the sensible riding window. Higher elevations can drop to freezing in December and January, so a mountain crossing in midwinter needs cold-weather kit even in a tropical latitude. As of August 2026 that is the pattern; check current conditions before travelling in the wet season, when landslides on mountain roads are routine.
Insurance. Mexican law requires third-party liability cover from a Mexican-licensed insurer. A United States or Canadian policy does not provide it. Arrange a Mexican policy before you ride.
Import permit. A foreign-plated bike needs a temporary import permit (TIP), issued through Banjercito, to travel into the Mexican interior, and Oaxaca is deep interior. Sort it at the border and check the current Banjercito requirements for your route before you set off.
Topes. Highway 175 passes through a great many villages, and every one of them has topes at each end. In the Sierra they are frequently unpainted, sometimes placed on a gradient, and occasionally sited immediately after a blind corner. On a mountain road with a loaded bike this is the most likely thing to hurt you. Slow down for buildings, every time.
Do not ride at night. The standing advice for Mexico is not to drive at night in most states, and on Highway 175 the practical case is overwhelming: unlit switchbacks, cloud at road level, livestock, landslide debris, and topes that vanish in headlights. Both crossings are day rides. Plan to be parked before dusk.
Fuel. Oaxaca City, Miahuatlán and Pochutla are the reliable stops on the southern crossing. In the Sierra Norte the gaps are longer and the stations smaller. Fill whenever you pass one in the mountains rather than waiting for a better option.
Traffic and surface. Expect buses and lorries on the blind side of corners, road repairs without warning signs, and sections where landslide damage has narrowed the carriageway to one lane. None of it is unusual; all of it rewards a moderate pace.
Gear notes for a road made of corners
The defining stress on this route is altitude and temperature cycling repeated over and over. You can start a day at 1,500 m in the Central Valleys, cross above 2,500 m in cloud, and finish at sea level in tropical heat, and then reverse it the next day. That is a lot of work for a set of tyres in a short space, particularly on a road where you are leaned over almost continuously. Our tire pressure guide covers what that cycling does, and a TPMS sensor gives you the number live rather than at the next town, which on Highway 175 could be an hour of switchbacks away.
Signal in the Sierra is unreliable — cloud forest, deep valleys and small villages are a poor combination for mobile data. Loading the whole state in advance for offline navigation on a handlebar display keeps the route, the villages and the fuel stops available where a phone would stall, and riders on the JADO S6 get that on a screen that stays readable in cloud and in coastal glare on the same day, with the phone kept out of the rain.
Power in mountain villages is not guaranteed to be continuous, and a bi-directional 100 W charger that fills devices off the bike during the day and works as a power bank in the evening removes the risk of starting a mountain crossing on a half-charged navigation unit. For the wider country, see our guide to the best motorcycle roads in Mexico and to Copper Canyon in Chihuahua.
FAQ
How long does Highway 175 take from Oaxaca City to the coast?
Plan a full day. The distance looks modest but the road is almost continuous corners with substantial altitude change and heavy village traffic, and riding it in daylight only is a hard constraint rather than a preference.
Should you take the new toll road instead?
Take both. The Barranca Larga–Ventanilla toll road, 104.3 km opened in February 2024, is the fast way to the coast and the sensible option in bad weather or for a return leg. Ride the old mountain road in the direction and on the day the weather suits it.
Which is better, the northern or southern crossing?
The southern crossing to Puerto Ángel is the famous one and has the better views. The northern crossing over the Sierra de Juárez is cooler, greener and much quieter, with less predictable services. If you have time for both, do both.
When is the best time to ride in Oaxaca?
Roughly November to April, outside the summer and early autumn rains. Note that high elevations can reach freezing in December and January despite the latitude.
Do you need a temporary import permit for Oaxaca?
For a foreign-plated bike, yes — a TIP issued through Banjercito is required for travel into the Mexican interior. Arrange it at the border crossing and check the current rules before you travel.
