Altigraphs
HC

Passo San Marco,

Southern ascent from San Giovani B. — the hardest of the 3 ways up

Elevation profile

399 m → 1993 m
0–4% 4–6% 6–8% 8–10% 10–14% 14%+
Steepest kilometre: km 8 at 19.5% — peaks at 46.6%
Elevation inside a tunnel is unreliable — the survey reads the mountain above the road, not the road. Report a tunnel

Climb stats

2263 m Ascent
31.29 km Length
7.23% Average
70% Maximum
1993 m Summit altitude
621 Difficulty

Kilometre by kilometre

Export CSV
Km Altitude Gain Average Max Gradient
1 414 m +30 m 3% 8%
2 503 m +113 m 11.3% 40%
3 443 m +27 m 2.7% 17%
4 467 m +74 m 7.4% 32%
5 461 m +60 m 6% 28%
6 473 m +17 m 1.7% 7%
7 656 m +192 m 19.2% 60%
8 801 m +195 m 19.5% 70%
9 517 m +1 m 0.1% 1%
10 536 m +19 m 1.9% 5%

Route map

Paved Unpaved Cobblestone Unknown
Report a road type

Photos

No photos yet — be the first to add one.
Add a photo

Rider notes

What it is actually like, from people who have ridden it
Write a note
No rider notes yet — be the first to share what it's really like.

How hard is 621?

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

Improve this page

Every number here was measured by a rider. If you know this road, correct the data, add a photo, or leave a note for the next person.

Report a tunnel Report a road type
1 contributors History

Conditions at the summit

11°
Partly cloudy · feels like 9°
Wind 8 km/h N
Updated Just now
Best months to ride
Nobody has voted yet Ridden this one? Tap the months you'd recommend to help other riders time it right.
Tap a month you'd recommend

Climbs nearby