Multiple Raycasts at once from same function?

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Ah I see. You basically just do one raycast after another, and check if the current one is closer than the last one.

Here, I packaged it into a function for you. I left comments that explain what it does. If you have any questions just ask!

-- raycasts from one origin in multiple directions
-- parameters:
--  
--  origin: Vector3				the origin of all the rays
--  directions: Array<Vector3>	a list of all the directions
--  rayParams: RaycastParams	the parameters for each raycast (optional)
local function MultiRaycast(origin, directions, rayParams)
	local finalResult = nil
	local finalDistanceToOrigin = nil

	-- for each of the directions passed in,
	for _, dir in directions do
		-- do a new raycast
		local result = workspace:Raycast(origin, dir, rayParams)

		if result then
			if finalResult then
				-- check the distance of this raycast's hit
				local distanceToOrigin = (result.Position - origin).Magnitude
				if (distanceToOrigin < finalDistanceToOrigin) then
					-- and if its the closest one yet, replace finalResult
					-- with this one
					finalResult = result
					finalDistanceToOrigin = distanceToOrigin
				end
			else
				-- this is the first raycast that hit something
				finalResult = result
			end
		end
	end

	return finalResult
end

You just it instead of Workspace:Raycast with a table of directions like this:

local origin = HRP.Position
local directions = {
  HRPCFrame.LookVector * REACH,
  Vector3.new(0, REACH, 0),
  Vector3.new(0, -REACH, 0)
  -- ...any other directions you want to check
}

local result = MultiRaycast(origin, directions)
if result then
  -- do whatever
end
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