Can't outrun them, but if u need them to leave you alone run around other dinos. They get distracted super easy. To tame just aggro them into a behemoth trap and fly argy out top. Close gate. Tranq away. Boost their health once tamed.
If you are having a hard time finding spino's in their respective spawn zones (especially Ragnarok), kill all the fish in that area. They share the same spawn capacity and can be out spawned by coles! ( up vote so Rag players know!!!)