While the orbit is elliptical, the average distance to the sun is approximately 93 million miles.
So if radius x 2 x Pi = circumference, then one rotation is approximately 584.335 million miles.
Multiply that by 33, and apparently I have, as of today, travelled around 19.283 billion miles. (Not including the rotation of Sol around the galaxy, the mutual orbit of the local group, the orbit of the local group around a larger conglomerate of galaxies further in or their rotation around something unknown in the middle of it all, or the relative expansion of the universe. But it'll do for a rough estimation.)
It's been a tiring journey - so I'm taking the day off work.