Altigraphs
1 Tarn, France

Col de la Sié

South-western ascent from Brassac
Length
25.4 km
Height gain
490 m
Average
1.9%
Steepest km
6.5%
Summit altitude
998 m
Difficulty
99
2 ways up · this is the hardest Compare all 2

Elevation profile

507 m → 998 m Touch or hover to inspect
0–4% 4–6% 6–8% 8–10% 10–14% 14%+
Steepest km: km 4 at 6.5%

Climb analysis

Where the climbing is

0–4%
18.1 km
4–6%
4.3 km
6–8%
2.8 km
8–10%
0.0 km
10–14%
0.3 km
14%+
0.0 km

Hardest sustained

1 km · km 2.6–3.6
7.2%
2 km · km 2.6–4.6
6.5%
5 km · km 1.2–6.2
5.2%

Time to the top

1h 06 at 3 W/kg · 70 kg rider + 8 kg bike, no wind

Kilometre by kilometre

Export CSV
Km Altitude Gradient 0–15%
1 518 m 1.0%
2 565 m 4.7%
3 604 m 3.9%
4 670 m 6.5%
5 725 m 5.6%
6 771 m 4.6%
7 797 m 2.7%
8 800 m 0.2%
9 820 m 2.0%
10 835 m 1.6%

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
14° Partly cloudy Feels like 13° · 998 m
Crosswind on 61% of the climb · Wind 8 km/h SE
Tailwind 14% Crosswind 61% Headwind 25%

How hard is 99?

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

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Added by Thutmose · 1 contributor

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