Why Trail Running Is Booming in 2026 — And 5 Races to Try in Portugal
For years, running has been dominated by numbers. Faster 10Ks, marathon personal bests, carefully calculated splits, and increasingly detailed training data.
But a growing number of runners are discovering something different: the freedom of leaving the road behind.
Trail running is gaining momentum in 2026, attracting everyone from experienced marathon runners to people looking for a new way to enjoy exercise.
And the appeal goes far beyond mountain views.
It’s about adventure, community, and sometimes simply enjoying a run without worrying about the pace displayed on your watch.
So, what’s driving the trail running boom, and where can you experience it in Portugal?
Why Are More Runners Choosing Trail Running?
Trail running isn’t new. Portugal has had a strong trail running community for years, with events ranging from short local races to internationally recognised mountain challenges.
What is changing is the audience.
Trail running is increasingly attracting recreational runners who aren’t necessarily interested in ultramarathons or extreme endurance events.
A recent Women’s Health feature highlighted how more runners, particularly women, are turning to trails for a different relationship with the sport: less pressure, more exploration, and a greater sense of freedom.
There are a few reasons why this shift makes sense.
1. It’s not always about chasing a personal best
On the road, pace is often everything.
A 5:00 min/km average might feel like a successful training session one day and a disappointment the next.
On trails, those comparisons become far less meaningful.
Elevation, technical descents, uneven surfaces, and weather conditions make maintaining a consistent pace difficult.
A 10 km trail race can take significantly longer than a road 10K, and that’s completely normal.
Instead of focusing exclusively on speed, runners learn to manage their effort, adapt to changing terrain, and appreciate the challenge itself.
2. Running becomes an adventure
Your usual road running route might involve familiar streets, traffic lights, and the same stretches of pavement.
Trail running offers something different.
Forest paths, mountain viewpoints, riverside trails, and rural landscapes transform an ordinary training session into an opportunity to explore.
In Portugal, the variety is particularly impressive.
From the mountains of Serra da Estrela to the coastal landscapes around Cascais, there’s no shortage of places to discover on foot.
3. The trail running community keeps growing
Running clubs have become a major part of modern fitness culture.
According to Strava’s 2025 Year in Sport report, the number of running clubs on its platform grew 3.5 times compared with the previous year.
That interest in community-based exercise fits naturally with trail running.
Although trail races are competitive, many also offer shorter distances, hiking options, team classifications, and a strong local atmosphere.
It’s an environment where walking a steep climb is normal, helping another runner is part of the experience, and reaching the finish line can feel just as rewarding as achieving a fast time.
Road Running vs. Trail Running: What’s Actually Different?
If you’ve only raced on the road, your first trail event might surprise you.
The biggest differences aren’t necessarily the distances, but the demands of the terrain.
| Road Running | Trail Running |
|---|---|
| Mostly paved surfaces | Dirt, rocks, forest paths and uneven terrain |
| Relatively consistent pace | Pace changes according to terrain |
| Distance is a major performance indicator | Distance and elevation gain both matter |
| Road running shoes | Trail shoes with suitable grip |
| Focus often on pace and finish time | Greater emphasis on effort, terrain and endurance |
One important lesson: don’t choose your first trail race based on distance alone.
A relatively flat 12 km trail and a mountainous 12 km course with steep climbs can be completely different experiences.
Checking the elevation profile and technical difficulty before registering is essential.
5 Trail Running Races in Portugal to Try in 2026
Interested in giving trail running a go?
Here are five upcoming trail events in Portugal, from shorter introductory distances to more demanding mountain challenges, with registration available through RaceFinder.
1. III Trail Aldeia da Granja — A Great Place to Start
8 November 2026 | Vialonga, Lisbon
Distances: 12 km trail, 24 km trail and 8 km walk
If you’re based near Lisbon and want to experience a trail running event without committing to a long mountain race, the III Trail Aldeia da Granja is worth considering.
Taking place in Granja, Vialonga, the event explores rural paths and natural surroundings outside the capital.
The 12 km option offers a shorter introduction to trail competition, while the 24 km race provides a longer challenge for runners with more experience.
There’s also an 8 km non-competitive walk for those who prefer to enjoy the atmosphere without racing.
A good reminder that discovering trail running doesn’t have to start with an ultra.
View race and register on RaceFinder
2. Trails of Burel — Discover Mountain Running in Serra da Estrela
8 November 2026 | Manteigas, Guarda
Distances: 12 km, 18 km, 33 km and a walking option
Ready to discover what mountain running feels like?
The Trails of Burel takes participants into the landscapes surrounding Manteigas, in Serra da Estrela.
Unlike an urban race, this event brings challenging climbs and varied mountain terrain into the experience.
There are three competitive distances, allowing runners to choose between a shorter mountain challenge and more demanding courses.
The 12 km distance may be the shortest, but runners should still prepare for the elevation and terrain rather than treating it like an ordinary road race.
If you’re curious about why people fall in love with mountain running, this is the kind of setting that helps explain it.
View race and register on RaceFinder
3. Zêzere Trail — From Your First Trail to an Ultra
14–15 November 2026 | Ferreira do Zêzere, Santarém
Distances: Approximately 13 km, 22 km, 33 km and 49 km, plus walking and children’s activities
One of the most interesting aspects of trail running is how many different challenges can exist within the same event.
The Zêzere Trail demonstrates that perfectly.
The shorter 12.8 km Mini Trail offers a more manageable distance for runners building their experience, while the 22.3 km, 33.6 km and 48.9 km routes introduce increasingly demanding endurance challenges.
The longest course includes approximately 2,646 metres of elevation gain, showing just how different mountain running can be from a conventional road race.
The event also includes walking and children’s activities, making it appealing to groups and families with different interests.
Whether you’re discovering trail running or preparing for your next major challenge, there’s plenty to explore.
View race and register on RaceFinder
4. Atlantic Cliff Adventure — Trade the Road for Coastal Trails
15 November 2026 | Charneca, Cascais
Distances: 10 km trail, 20 km trail and 10 km walk
Not all trail running has to take place in the mountains.
The Atlantic Cliff Adventure offers a different setting in the Cascais region, with trails through the natural surroundings of Charneca.
The event includes a 10 km competitive trail, an option worth exploring for runners transitioning from road running, and a longer 20 km distance for those looking for an additional challenge.
There’s also a 10 km non-competitive walk.
Both competitive races include electronic chip timing, while the event maintains the outdoor atmosphere that makes trail running attractive to so many participants.
For runners around Lisbon and Cascais, it’s an opportunity to discover a different kind of race without travelling too far.
View race and register on RaceFinder
5. I Trail Trilhos da Lagoa de Óbidos — A New Event to Discover
6 December 2026 | Óbidos, Leiria
Distances: 12 km trail, 22 km trail and 8 km walk
There’s something particularly interesting about participating in the first edition of an event.
The I Trail Trilhos da Lagoa de Óbidos makes its debut in December 2026, inviting participants to explore the natural and agricultural landscapes around Lagoa de Óbidos.
The Mini Trail covers approximately 12 km and is designed with a lower level of technical difficulty than the longer course.
For runners wanting more distance, the 22 km trail offers a medium-difficulty challenge.
An 8 km non-competitive walk is also available.
With forest paths, rural tracks and the natural surroundings of the lagoon forming part of the event’s identity, it’s another example of how trail running can introduce you to places beyond your usual training routes.
View race and register on RaceFinder
How to Prepare for Your First Trail Race
You don’t need to become a mountain running specialist before trying your first trail.
But some preparation will make the experience much more enjoyable.
Start with a realistic distance. If you’re comfortable running 10 km on the road, consider a shorter trail event with manageable elevation rather than immediately attempting a long mountain course.
Train on different surfaces. Introduce dirt paths, gentle hills, and uneven terrain gradually. Trail running requires more balance and attention to foot placement than most road running.
Forget your usual road pace. Use perceived effort, breathing, and terrain conditions to guide your speed. Walking steep climbs is a perfectly valid strategy.
Check your equipment. Trail running shoes with appropriate grip can make a difference, especially in wet or technical conditions. Always read the event regulations for mandatory equipment.
Prepare for changing weather. Autumn and winter trails can be muddy, slippery, and exposed to colder conditions. Check the forecast and carry suitable layers when necessary.
Respect the environment. Stay on marked routes, follow the organiser’s instructions, and leave the trails as you found them.
And perhaps most importantly, remember that your first trail doesn’t have to be about performance.
It can simply be about discovering whether you enjoy this different way of running.
Is Trail Running the Next Big Thing for Recreational Runners?
Road racing isn’t going anywhere. Marathons, half marathons, and fast 10Ks will continue to attract runners who love the challenge of improving their times.
But trail running offers something complementary.
A chance to train differently. To explore new places. To spend time outdoors. And to discover that running doesn’t always have to revolve around a watch.
Maybe your next personal best won’t be measured in minutes and seconds.
Maybe it will be the view from the top of a climb, the confidence of completing your first technical descent, or the feeling of crossing the finish line of a race you never imagined yourself doing.
Ready to take your running off-road?
Explore trail running events in Portugal on RaceFinder, compare distances and find your next adventure.
Your next race might be waiting somewhere beyond the pavement.
