For Terentieva, this will be her first international competition in more than four years, after she was granted neutral status by the International Ski and Snowboard Federation (FIS).
The Russian, whose surname was Nepryaeva before she married, won three Olympic medals in 2022, one in each category.
Her younger sister, Darya Nepryaeva, is also on the starting list in Finland. She was the only Russian female cross-country skier to compete at the 2026 Olympics in Italy.
On Thursday, the Finnish government is expected to decide on visa applications for Russian athletes, according to Yle. Prime Minister Petteri Orpo said the aim is specifically to prevent Russian professional athletes from travelling to Finland.
The cross-country skiing World Cup season will also start in Finland, in Ruka, on the last weekend in November.
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