Via principala 21

|colspan="3" style="color:white;background-color:blue; text-align: center;"|21
|-
| colspan="3" |21
|-
|colspan="3" style="color:#ffffff;background-color:blue; text-align: center;"|Informaziun
|-
|colspan="2"|Lunghezza
|380 km
|-
|colspan="3" style="color:#ffffff;background-color:blue; text-align: center;"|Citads
|-
| colspan="3" |
 Frantscha Saint-GingolphMontheySaint-MauriceMartignySembrancherPass dal Gd Saint Bernard 2469 m Italia

La via principala 21 è ina via principala svizra.

Category:Vias chantunalas da la Svizra
Category:Svizra