Mysore to ooty is 160kms by bus and 120 kms by own/private vehicle. it takes around 4 4:30 hrs to cover the distance through tiger reserve. the road is closed between 21:00 and 6:00. you will get both ordinary and luxury buses from 5 in the morning all though day upto 16 in the evening. Metupalayam on the other hand is around 180 kms and takes 5 hours roughly. you can take any Coimbatore bound bus and change at annur to reach metupalayam. buses are available round the clock with a frequency of half n hour to 45 min. For toy train few general tickets are given an hour before departure. if you can make it early to the counter say by 5 in the morning you can get this ticket and board. its same as 2s and standing is not allowed.