At what length do component cables start losing pi

I need to run about 25 ft of component video cable to the TV .. Does that sound like i may have a major drop in picture quality? Also would that give any delay to the picture compared to the sound..?
No and No. As long as the cables are well shielded you should not have any problems.
Thanks Timo

I'll take that answer ,, Unless someone else could tell me something different..
agree you'll be just fine doing this - it's certainly a non-issue
Drop in picture quality as an effect of resistance varies depending upon the size and material construction of the signal conductor. Most video cables use conductors that are made from copper, tinned copper, or silver plated copper. With this in mind, the only variable left is the size of that conductor ... the larger the conductor is, the less resistance it presents to the signal over long runs.

As an example, our X-60, at a run of 25 feet might introduce some slight loss because the conductor presents an overall resistance of around 1.7 Ohms at 25 feet (at 20 degrees Centigrade).

Digital video is another issue, and length is not of the same concern.

As for delay and synchronizing picture with audio, the video signals travel at nearly the speed of light - there would be no perceptible delay between picture and sound.