Driving from Chascomús to Trinidad, Uruguay: 357 miles and about 7 h 27 min behind the wheel. Where you cross into Uruguay, what to bring, and 8 stops.
Driving from Chascomús to Fray Bentos, Uruguay: 250 miles and about 5 h 0 min behind the wheel. Where you cross into Uruguay, what to bring, and 9 stops.
Chascomús to Colonia del Sacramento, Uruguay: 375 miles (604 km), about 8 h 3 min of driving, crossing at the Gualeguaychú–Fray Bentos bridge. Entry rules.