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4 Sevilla, Spain

Puerto de Martín Alonso

South-western ascent from Río Onza
GPX Directions
Length
2.2 km
Height gain
147 m
Average
6.8%
Steepest km
7.6%
Summit altitude
481 m
Difficulty
29
2 ways up Compare all 2

Elevation profile

333 m → 481 m Touch or hover to inspect
0–4% 4–6% 6–8% 8–10% 10–14% 14%+
Steepest km: km 1 at 7.6%

Climb analysis

Where the climbing is

0–4%
0.0 km
4–6%
0.9 km
6–8%
1.0 km
8–10%
0.0 km
10–14%
0.3 km
14%+
0.0 km

Hardest sustained

1 km · km 0.0–1.0
7.6%

Time to the top

0h 10 at 3 W/kg · 70 kg rider + 8 kg bike, no wind

Kilometre by kilometre

Export CSV
Km Altitude Gradient 0–15%
1 410 m 7.6%
2 473 m 6.3%
3 481 m 4.8%

Route map

Two fingers to pan
Road surface not mapped yet Report a road type
No tunnels mapped Map a tunnel

At the summit now

Updated Just now
18° Cloudy Feels like 18° · 481 m
Wind 4 km/h S

How hard is 29?

Difficulty score is length × gradient, weighted for the steepest kilometre.

Côte d'Artigues, Bartabeille Haut 29
Serra de São Mamede via Santa Luzia, Viana do Castelo 29
Puerto de Martín Alonso, Río Onza 29
Cota de Hornachuelos 29
Portela do Vade, Pico de Regalados 29

Help complete this climb

Riders’ photos, notes and corrections make every profile better.

Add a photo No photos yet — the last kilometre, the summit sign Write a rider note Traffic, water, where it really bites Map a tunnel Mark where the road goes underground Report a road type Not mapped yet — paved, unpaved or cobbles
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Edit climb data Report an error History
Added by jose-juan-luque-aranda · 1 contributor

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