>>64060501
The total length of the journey is 1,937.78 km (1,206.92 km from APP Novoshakhtinsk to the BCP, 730.86 km from the BCP to Berlin). A daily rate of ~85.8 m across ~183 days gives a yearly travel of 15,701.4 m (call it 15.7 km even). This gives an approximate arrival time at the Polish border of the morning of September 7th 2098, and an arrival in Berlin of the morning of June 17th 2145.
Should the snail have stocked up on pervitin prior to his last overwintering (allowing him to march all day long), his daily speed would increase to 205.92 m; he would arrive in Poland on the night of April 4th 2054 and in Berlin on the night of June 16th 2073.
Should the snail have built himself an insulated cope cage (removing the need to overwinter), his yearly speed would increase to 31337.6 m (h4x0r); he would arrive in Poland in the wee hours of October 5th 2060 and Berlin late at night on January 30th 2084.
Should the snail have both insulated cope cage and pervitin, his yearly speed would be 75210.2 m. Though he will certainly expire at the end, he will arrive in Poland on late at night on April 17th 2038 and Berlin in the wee hours of January 5th 2048.
Note: all numbers here are approximate and entirely dependent on me being good at math (lol, lmao). I *think* I've accounted for leap years as well (only an issue with the cope cage, and I used 365.24 instead of 365 for the day count of all-year travel).
tl;dr - the snail has one hell of a journey ahead of him, and the war (and Russia) will almost certainly have ended long before he arrives.