Answer
No direct restrictions on Russian citizens entering Uruguay, comparable to those in some European countries, are stated. This makes Uruguay a distinct destination where a Russian passport is not itself an automatic barrier to entry.
This does not mean travel is free of ordinary requirements. You need a valid passport, an appropriate itinerary and compliance with the rules governing the purpose of your trip. A tourist’s situation differs from travel for work, study or a long stay.
It is also important to distinguish Uruguay’s rules from those of transit countries. Even if Uruguay does not impose a direct ban on Russian citizens, a route through other countries may introduce its own conditions, making flight logistics a separate part of preparation.