See the sections
Walking the Senda del Oso with kids is a plan that almost always works out: no cars, an average gradient of 1.5%, a stroller-friendly surface and sections of 0.8 to 5 km with Molina the bear as the final reward.
The easiest sections
The easiest section with kids is the one linking the Buyera area with the Fernanchín bear enclosure: 0.8 flat kilometres walked in 20 minutes, ending at the viewpoint over Molina the bear. Second place goes to the Proaza loop, 5 km there and back in an hour and a half, the option families repeat most.
The reason the whole trail is so comfortable lies in its origin: it is the trackbed of the old mining railway (opened in 1884, closed in 1963), so the average gradient is 1.5% and there are no steps, exposed crossings or technical difficulty.
The surface is compacted gravel and cars are banned along the entire route.
Buyera – Fernanchín enclosure
0.8 km · 20 min each way
- From the moment they can walk
- Any stroller will do
Proaza loop
5 km · 1.5 h
- From age 5
- With an all-terrain stroller
Tuñón loop
10 km · 3 h
- From age 8
- Passes Peñas Juntas and several tunnels
Entrago – Buyera
18 km · 4-5 h
- From age 10-12, used to walking
- No stroller
If you bring a stroller, make it all-terrain: wheels of 30 cm or more in diameter, suspension on at least two wheels and no more than 30 kg fully loaded. With that kit, the Proaza loop rolls without fighting the surface; the long Entrago-Buyera stretch, on the other hand, we do not recommend with a stroller purely because of its length.
The tunnels are the treat you were not expecting: the network has more than 30, between 6 and 8 exceed 150 m and the longest is around 300 m. They are lit with solar lamps and run 4-5 degrees cooler than outside, so pack a light jacket and a headlamp in case a light fails.
For kids they are usually the best part of the day, especially on the Tuñón-Proaza section, the first to open as a greenway in May 1995. If you also want scenery, you have our verdict in the most beautiful section on foot.
At what age can kids do it
There is no minimum age: the trail is a public greenway, flat and traffic-free, so the real question is how many kilometres each child can handle. With an all-terrain stroller you can bring them from babyhood; walking on their own feet, from age 3-4 on the short Buyera stretch.
For planning, allow a family pace of 3 km/h with frequent stops, against an adult's 4 km/h. With that average, this is our recommendation by age:
- 0-3 years: in an all-terrain stroller on the Proaza loop (5 km) or the Buyera stroll (0.8 km).
- 3-5 years: Buyera – enclosure on foot; 20 minutes each way with the bear viewpoint as the carrot.
- 5-8 years: the full Proaza loop, 5 km in 1.5 h.
- 8-10 years: the Tuñón loop, 10 km in 3 h, with the Peñas Juntas gorge halfway.
- 10-12 and up: Entrago – Buyera, 18 km in 4-5 h, only if they walk regularly.
As for safety, two rules are enough. First: although there are no cars, the trail is shared with cyclists, so children walk on the right with an adult in front through the tunnels.
Second: carry your own water, at least 1 litre per person, because there are 14 km without a fountain between Entrago and Proaza; the rest of the gear is in what to pack for the Ruta del Oso.
If part of the family would rather pedal
A mixed plan works very well with mixed ages: some walk the short section while others ride down by bike.
At the Entrago rental point (Polígono de Pradacón, Nave 1) there are baby seats for €15/day (from 8-9 months to 3 years, with a 5-point harness), kids' trailers for €25 (ages 1-5, 2 seats, up to 30 kg), tag-along bikes for €25 (ages 4-8) and children's bikes for €25-28 in sizes 16, 20 and 24.
We cover it in detail in the trail by bike with kids and in the prices.
Quick rule by age: 0.8 km from Buyera if it is their first outing, 5 km from Proaza from age 5 and 10 km from Tuñón from age 8. Molina the bear, at km 19, is the finish line that keeps them walking.
Stops and rest areas
The best rest area on the whole trail is Buyera, at km 18: picnic tables, a fountain and a seasonal bar, just 800 m from the bear enclosure. The star stop for kids comes right after, at km 19: the outdoor viewpoint over the Fernanchín enclosure, free and right beside the trail.
Those 40,000 m² are home to Molina, a rescued bear who arrived in 2013. The chances of seeing her are around 70%, with the best windows from 9 to 11 am and 5 to 7 pm, when it cools down; a typical visit takes 15-20 minutes.
Guided visit times are managed by the Fundación Oso de Asturias from the Bear House in Proaza, and the story of her predecessors is in Paca and Tola.
The rest of the stops are best organised by kilometre, counting from Entrago:
- Km 2, Prehistory Park: the first stop if you start from Teverga.
- Km 12, Peñas Juntas gorge: the most photogenic spot; kids walk between walls of rock.
- Km 14, Proaza: the village centre is 200 m off the trail, with a fountain in the village.
- Km 16, iron bridges: river crossing on the old railway trackbed.
- Km 18-19, Buyera and the enclosure: picnic first, bear after.
- Km 19-22, Santo Adriano de Tuñón: a pre-Romanesque church from the year 891, a 300 m detour away.
There are four fountains, in Entrago, Proaza, Buyera and Tuñón, all beside the route or a minimal detour away. With kids it pays to refill at every one: the 14 km gap without water between Entrago and Proaza is the route's only weak point.
Last part of the plan: logistics. The free car parks at Entrago (around 60 spaces), Tuñón (40) and Proaza (20) fill up before 10 am in July, August and long weekends, so start early or check the alternatives in where to park.
For linear routes, the Oviedo – San Martín de Teverga bus line stops at Tuñón, Proaza, Caranga and Entrago; timetables change by season and are published by the Asturias Transport Consortium.
And if you can choose the date, May-June and September offer the best conditions; at the height of summer, set off early and use the tunnels as a fridge, as we explain in the best time to do the Ruta del Oso.
Ruta del Oso