When i turn the key to start the truck upit turns to run but wont go to start, it turns all the way but doesnt start

Not much to go on---but I'll try here.

Ok first thing check to see if truck is in park---sometimes it may be in park but the park switch will not start truck unless the switch is depressed.

try putting truck in neutral with foot on pedal to start truck-----if starts the problem is with the switch.

If not, then you have a ignition switch problem---there is an ignition switch box under the dash on topside of steering column with has adjustment screws mounted to column.

loosen screws and slide ignition box toward the steering wheel to achieve the start position of the ignition switch box to start truck.