how to add 2 more columns to my table

dear all,

i have this command below:

SELECT
 B.[Description] As 'Driver Name'
,A.DriverCard    As 'Driver ID'
,A.CarNumber As'Vehicle Number'
,A.StartDistance As 'Start Odometer'
,A.EndDistance As 'End Odometer'
,A.StartDate As 'Trip Date'
,A.StartHour As 'Start Time'
,A.EndHour As 'End Time'
,A.[RPMIdleTime] As 'Idle Time Engine Runing'
,A.DriveDistance  As'Trip Distance'
,A.[IdleTime] As 'Idle Time Total'
,A.StartDistance As 'Start Odometer'
,A.EndDistance As 'End Odometer'
,E.Location As 'Start Destincation'
,F.Location As 'End Destincation'
,W.[GroupDescription]


FROM CarData.dbo.CarTravels A
LEFT JOIN CarData.dbo.Users B ON A.DriverCard=B.CardNumber
LEFT JOIN CarData.dbo.Cars C ON A.CarNumber=C.CarNumber
LEFT JOIN  CarData.dbo.GPSAddress E ON A.StartGPS_ID=E.ID
LEFT JOIN  CarData.dbo.GPSAddress F ON A.EndGPS_ID=F.ID
LEFT JOIN CarData.dbo.Groups W ON C.GroupID=W.GroupID

WHERE (StartDate >={?1StartDate})
AND (StartDate <={?2EndDate})

==================

and i need to add to my table two more columns which are the StartDistance and EndDistance

but i have no clue

please any help is really appreciated

thank you