I've been travelling heavily for less than 10 years, and hopefully have many more years of travel to come.

2010 is a relatively light travel year, about 250k flown miles.

Meh, the Sun is a pointless goal, even if you got there you'd just burn to a crisp. Log your flights on OpenFlights instead, and it'll tell you how much further you have to go until you reach Mars. :p Still a ways off though, I'm only 1.75% of the way there... but according to Randy, there's somebody somewhere who has 23 million miles in their FF account. (Whether they're butt-in-seat or not is another story.)

And an astronomy nit: since the Earth and Mars revolve around the Sun at different rates, their distance isn't constant. OpenFlights thus assumes you'll be traveling when they're as close as possible, in which case you only need to fly 34,649,589 mi to get there.