Easy Way To Get Daily Grind Achievement Options

[BGOAT wiz]

Daily Grind acheivment = 140,000 feet for a total grind distance.
If you have the fun park unloacked just keep grinding on the roller coaster. the roller coaster rail boosts your speed which lets you cover a greater distance faster. it will still take awhile to acomplish but it's the fastest way I have found to get your grind distance up.