can 30 year olds run in college

BYU certainly accepts any age

There is not an age limit. If you Google around you can see some stories of older athletes in various sports, some far older than 32.

You would be of the typical age of a BYU freshman, so no problems dude!

Your NCAA clock starts when you enroll in college as a full time student.

If you haven't ever gone to college then you are good to go.

If you have been a full time student in the past... you are ineligible unless (at age 32) you are still within the five year window. So for instance...if you went to college as a FT student at 28 or so... you would still have a year or two.

There are several examples of famous dudes who have played professional baseball out of high school who came back and played football later (Chris Weinke being the most well known).

Normally we see this occur with guys who went in the military and came back out... went to college and played in sports.

Just know your under-21 teammates are going to constantly ask you to buy them booze.

The eligibility rules are more lenient for D2, 3 and NAIA.

"Division I five-year clock: If you play at a Division I school, you have five-calendar years in which to play four seasons of competition. Your five-year clock starts when you enroll as a full-time student at any college. Thereafter, your clock continues, even if you spend an academic year in residence as a result of transferring; decide to redshirt, if you do not attend school or even if you go part time during your college career.

Division II 10-semester/15-quarter clock: If you play at a Division II or III school, you have the first 10 semesters or 15 quarters in which you are enrolled as a full-time student to complete your four seasons of competition. You use a semester or quarter any time you attend class as a full-time student or are enrolled part time and compete for the school. You do not use a term if you only attend part time with no competition or are not enrolled for a term."

so in theory a 30 year old freshman (or someone who only did part time JUCO) is ok for either the 5 year or 10 semester clock, any NCAA division. if you started school full load age 18 then dropped out then tried to come back age 30, you're ineligible D1 but might have D2/D3 semesters left.

i think there are some subtleties on this, however, where your clock starts running regardless. minor league baseball, junior hockey, something like that. but there are also exceptions to the 5 years for mormon missions and some stuff like that.

The above explains it well. Another thing to keep in mind is the situation where a student has graduated but has remaining eligibility left under D2 and D3 clocks: D3 will only let you compete as a graduate student at the university where you got your undergrad degree. D2 has no such restriction.