According to the Food Channel, the world's largest zucchini on  record was 69.5 inches long and weighed 65 pounds. The grower was  Bernard Lavery of Plymouth Devon, UK.
Munchen (Germany) is 820 kilometers (or 510 miles) from Amsterdam (The Netherlands).
From Amsterdam Centraal train to Rotterdam, R'dam Centraal AA, line 33 bus to Rotterdam airport, fly to Munich airport, then light rail to Munich.