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Legend and translations
ITA - ITALY
LARIO
Description Street circuit used from 1921 to 1939 for important motorbike races and it was abandoned because it was too dangerous (besides reason, of course).
Lario is the latin name of Como Lake
Map is drawn using an original road map dated 1927 and profile (surely inaccurate, as it is 3 km shorter) is taken from a guide dated 1927.

My map seems ti have some difference with ones on official website, but I can't understand how it is possible, as on 1930 road atlas there are no more roads.
Location Asso
CO - Como - Lombardia

In Triangolo Lariano (Larian triangle), land between Como, Lecco and Bellagio; North of Milan
Latitude - Longitude + 45°51'46"     + 9°16'08"
45.862778     9.268889
UTM Coordinates X = 520872.104  -  Y = 5078836.52  -  Zone 32T
Aerial photo / Map (*) Aerial photo / Map (*) OpenStreetMap  -   Aerial photo / Map (*) Google Maps  -   Aerial photo / Map (*) Bing Maps  -   Aerial photo / Map (*) Zoom Earth  -   Aerial photo / Map (*) Wikimapia  -   Aerial photo / Map (*) Portale Cartografico Nazionale
Altitude AMSL 754 m - 2474 ft
Inauguration May 29th 1921
Closing 1939
Designer  
Sources and links (Translation) (**)
(1) Italian www.circuitodellario.org/circuito.htm Official website
(2) Italian www.tazionuvolari.it/corseit.htm Tazio Nuvolari's official website
(3) Italian filatelianumismaticalottini.it/wp-content/uploads/2024/07/cartolina-asso-panorama.jpg?utm_source=chatgpt.com Asso postcard: panoramic view
(4) Italian it.wikipedia.org/wiki/Circuito_del_Lario Wikipedia
(5) Italian www.civiltadellemacchine.it/it/news-and-stories-detail/-/detail/29-maggio-1921-cent-anni-fa-la-prima-volta-del-mitico-circuito-del-lario
(6) English www.silhouet.com/motorsport/tracks/italy/circuito_del_lario.html Map of 1934 layout
(7) Italian Guida delle Strade di Grande Comunicazione - Italia Settentrionale, Parte Prima Published by: Touring Club Italiano - Published in: Italia
Roads n. 117, 118 		1927
(8) Italian Atlante delle Strade d'Italia, Automobil Club di Milano, Terza Edizione Published by: Automobil Club di Milano - Published in: Milano, Italia
 		1930
(9) Italian www.youtube.com/watch?v=LX_2SJeHxxU Youtube: Archivio Luce Cinecittà - Circuito motociclistico del Lario, July 13th 1938 July 13th 1938
(10) Italian www.facebook.com/motoradunomandello/photos/mostra-del-circuito-del-larioa-poca-distanza-da-mandello-si-snodava-il-mitico-ci/1213050750857328 September 3rd 2025

(*) NOTE: a complete and detailed view of the circuit can be found (if available) on Street View by Google Maps and/or Bird's Eye and 3D views by Bing Maps for Enterprise (former Microsoft Virtual Earth): both can be reached using their own link in Aerial photo / Map cell.

(**) For on-line not-English speaking sources, click on each small flag and you open the corresponding Google Translator page with automatic translation.

Circuito del Lario
Description I do not know whether the configuration has remained unchanged across all editions or if it has been modified over the years.

The location of the finish line for the 1938 edition has been positively identified thanks to the Lario Motorcycle Circuit video from the Luce Cinecittà Archive, dated July 13th, 1938. The location appears to match the one shown in the image of the 1934 edition.
This photograph confirms that the circuit passed through the historic center of Asso; the Asso bypass—like the Barni cut-through—was a later addition to the provincial road network. Conversely, this other image shows the section of the modern provincial road (Via XXV Aprile) climbing toward Valbrona; notably, the road changes its name at the intersection, becoming Via Circonvallazione.
Years 1921÷1931, 1934÷1935, 1938÷1939
Direction Anticlockwise   Anticlockwise
Progetto Proposal NO
No longer operational YES
Car Circuit  
Motorbike circuit YES
Type Road course
Inauguration May 29th 1921
Closing 1939
Last update of this page September 20th 2026
Info last update  
Designer  
Distinctive points Asso - Valbrona - Onno - Vassena - Limonta - Bellagio - Guello - Civenna - Magreglio - Barni - Lasnigo - Asso
length 36.5  km    22.681  mi   (5)
length 36.5  km    22.681  mi   (2)

Circuito del Lario

Circuito del Lario

Circuito del Lario

Circuito del Lario

Due to technical problems, temporarily it's no longer possible to see the circuits on Google Maps embedded in the current page.
This feature will be restored as soon as I figure out how to do (any help would be appreciated!)

See this track layout with Google Earth
(Map shown here above can show at the same time all eventual layouts drawn. If you want to see only some of them, please go to Google Maps or Google Earth, by clicking on its own link)



Lario
NOTE:
ponte = bridge
bivio = junction to		 m km mi
AMSL partial total partial total
Asso 411 0.0 0.0 0.0 0.0
Visino 468 2.0 2.0 1.2 1.2
Osigo - Valbrona 494 1.7 3.7 1.1 2.3
Onno 201 5.2 8.9 3.2 5.5
Vassena 210 2.1 11.0 1.3 6.8
Limonta 231 3.5 14.5 2.2 9.0
Regatola 280 2.2 16.7 1.4 10.4
Civenna di Sopra 623 6.2 22.9 3.9 14.2
Madonna del Ghisallo 754 1.9 24.8 1.2 15.4
Magréglio 737 0.9 25.7 0.6 16.0
Barni 527 1.3 27.0 0.8 16.8
bivio Lasnigo 523 3.9 30.9 2.4 19.2
Asso 411 2.3 33.2 1.4 20.6


Updates
Date Track layout Years Description by Map by Thanks to Note
September 20th 2026 Circuito del Lario 1921÷1931, 1934÷1935, 1938÷1939 Davide Colombo Davide Colombo Davide Colombo Update Description with map
October 1st 2021 Circuito del Lario 1921÷1931, 1934÷1935, 1938÷1939 Guido de Carli     Update Description
February 22nd 2004 Circuito del Lario 1921÷1931, 1934÷1935, 1938÷1939 Guido de Carli Guido de Carli   Update Description with map
February 15th 2004 Circuito del Lario 1921÷1931, 1934÷1935, 1938÷1939 Guido de Carli     New Description without map
Not all eventual updates issued in last years are already visible in this list
 
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