HARVEST KING Trophy
You have harvested more than 100 hectares.
This should come naturally before either 10 million/1000 km, however if it does not continue sowing and harvesting crops till it does. I recommend wheat as it's fastest growing crop. If you already achieved 10 million and are still using small equipment it is recommend to buy the big versions of everything to speed this up. You can also buy more fields to speed up the process.
Please note: you need 101, not 100.