Races per country
Races competed per country. If a race travels through multiple countries, each country is counted.
| # | Country | Races | #Races |
|---|
| 1 | Spain | Gran Premio de Valencia | 1 |
Nations by date
Which countries did Antonio Prieto last add to his list?
| # | Country | Date |
|---|
| 1 | Spain | 1976-02-28 |