Skippy, there are numerous airstrips between Kalgoorlie-Boulder and Forrest, but they are all unsealed, useability is subject to weather, and some are station airstrips where you would be best advised to call ahead to obtain landing approval, and advice on local conditions. Maintenance levels are a mixed bag on these locations.
Karonie airstrip (adjacent to Karonie siding), possibly poorly maintained - https://maps.app.goo.gl/ct8ZwAzV6jrYd3oZ8
Kitchener airstrip - single runway at Kitchener siding (Zanthus), adjacent to Trans-line - https://maps.app.goo.gl/2SXWq8i2PR6tkEth9
Kanandah Station airstrip (N of the Trans-line, NW of Rawlinna), two runways, little information available, appears to be poorly maintained - https://maps.app.goo.gl/B71tb1Z6VXGzvRa88
Rawlinna Station airstrip, single runway (private airstrip, landing approval required) - https://maps.app.goo.gl/1ABtJGXN26ZmHCnY7
Rawlinna Station Homestead airstrip (two runways, private airstrip, close to main Rawlinna airstrip, landing approval required) - https://maps.app.goo.gl/46npWcCqKnarwVmM8
Haig airstrip, single runway, adjacent to Haig siding. Little information available, possibly poorly maintained - https://maps.app.goo.gl/RmezBcZjEKdMAjzE8
Distances:
Kalgoorlie-Boulder to Karonie - 50NM.
Kalgoorlie-Boulder to Kitchener - 140NM.
Kalgoorlie-Boulder to Rawlinna - 200NM.
Rawlinna to Forrest - 144NM.
All distances approximate numbers.