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HC BergamoLombardy, Italy

Passo di Zambla

Western ascent from La Rocca — the hardest of the 2 ways up

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GPX

Length: 24.5 km
Height gain: 879 m
Average: 3.6%
Steepest km: 8.9%
Summit altitude: 1262 m
Difficulty: 218

Bergamo · 7 climbs

2 ways up · this is the hardest Compare all 2

La Rocca 24.5 km, 3.6% average, 879 m height gain
Ponte Nossa 13.9 km, 5.8% average, 808 m height gain

Elevation profile

383 m → 1268 m Touch or hover to inspect

0–4% 4–6% 6–8% 8–10% 10–14% 14%+

Steepest km: km 23 at 8.9%

Climb analysis

Where the climbing is

0–4%: 11.2 km
4–6%: 3.5 km
6–8%: 4.8 km
8–10%: 3.0 km
10–14%: 2.0 km
14%+: 0.0 km

Hardest sustained

1 km · km 4.8–5.8: 9.1%
2 km · km 22.0–24.0: 8.4%
5 km · km 4.6–9.6: 7.3%

Time to the top

1h 30 at 3 W/kg · 70 kg rider + 8 kg bike, no wind

How this is calculated

Kilometre by kilometre

Export CSV

Km	Altitude	Gain	Gradient	Max
1	449 m	+66 m	6.6%	16.2%
2	514 m	+65 m	6.5%	14.2%
3	573 m	+60 m	6.0%	13.0%
4	565 m	−8 m	−0.8%	11.2%
5	631 m	+66 m	6.6%	9.8%
6	708 m	+77 m	7.7%	12.0%
7	784 m	+76 m	7.6%	10.8%
8	872 m	+88 m	8.8%	16.8%
9	923 m	+50 m	5.0%	8.8%
10	984 m	+61 m	6.1%	9.6%
11	1058 m	+74 m	7.4%	11.8%
12	1062 m	+4 m	0.4%	8.4%
13	1046 m	−15 m	−1.5%	0.4%
14	995 m	−51 m	−5.1%	0.0%
15	948 m	−47 m	−4.7%	9.5%
16	1021 m	+73 m	7.3%	11.6%
17	1046 m	+25 m	2.5%	8.8%
18	1035 m	−11 m	−1.1%	6.6%
19	1027 m	−8 m	−0.8%	4.8%
20	1044 m	+17 m	1.7%	4.8%
21	1064 m	+20 m	2.0%	4.6%
22	1082 m	+18 m	1.8%	15.4%
23	1171 m	+89 m	8.9%	18.6%
24	1250 m	+80 m	8.0%	10.8%
25	1262 m	+11 m	2.2%	7.4%

Route map

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Directions

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About Passo di Zambla

How long and how steep?: From La Rocca, Passo di Zambla is 24.5 km long and climbs 879 m at an average of 3.6%, to a summit at 1,262 m. Its steepest kilometre, km 23, averages 8.9%.
How long does it take?: At 3 W/kg it takes about 1 h 30 min to reach the top, at 4 W/kg about 1 h 11 min (70 kg rider, 8 kg bike, no wind).
What category is it?: It's an HC (hors catégorie) climb, with a difficulty score of 218. It's the hardest of the 2 ways up to Passo di Zambla.
Where is it?: It's in Bergamo, Lombardy, Italy.

How hard is 218?

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

Col de Spandelles, Ferrières 219

Bostmendieta, Lacarry-Arhan-Charritte-de-Haut 218

Passo di Zambla, La Rocca 218

Passo Rolle, Fiera di Primiero 218

Monte Velo - Passo Santa Barbara, Loppio 218

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Added by jose-juan-luque-aranda · 1 contributor

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