Track's Over?

Why does track season end so soon? Basketball seems to go on forever but track is only like 5 weeks. Reagan got hurt in the second to last meet and has still not recovered. She has a deep muscle strain in her quad and hurt it even worse in the last meet. She ran in the meet but in the second race she barely finished (in second) and the coach carried her away. It's driving her crazy that she can't run or do much of anything but she's needs to rest.