"Gravel paths and drives are fine unless you want to shift heavy objects."
Thick plywood sheets will help here, the least expensive types used as shuttering etc, you probably only need 2 and move along as you go using rollers or skates.
If there is a slope then a block & tackle is useful to pull the lathe along, I/we loaded a large lathe onto an Ifor trailer via the ramps with a block & tackle plus some harness etc. Do remember though lathes in particular are top heavy so take care.
John