Traveling the System

According to the 2002 Guinness World Records, Apollo 10 set the record for the highest speed attained by a manned vehicle at 39,897 km/h (11.08 km/s or 24,791 mph) during the return from the Moon on May 26, 1969 (Reference). At this speed, how long would it take to travel to Jupiter, the nearest of the "gas giants" in our solar system?
(For your reference: It took about 3 days to travel to the moon.)

Answer:
The answer depends to some degree, of course, of the position of the planets at the time of the trip, but at their nearest alignment it would take 1.8 years.

Calculation:
Jupiter is 778 million kilometers (483 million miles) from the sun, and the Earth is 150 million kilometers (93 million miles) from the sun. So at their closest distance, that is, when they are aligned in a straight line from the sun, the distance between is 778 - 150 = 628 million kilometers. To travel this distance would take 628 million / 39,897 = 15741 hours. 15741 / 24 = 656 days, 656 / 7 = 94 weeks, and 656 / 365.25 = 1.8 years.

Additional tidbits:
What about Neptune, the farthest planet (now that Pluto has been "demoted")? Well, that would take a bit longer, since it is nearly 3 billion miles away. It would take 12.4 years to reach Neptune at that speed.

And you are, of course, wondering about our nearest neighbor, Mars. This would just be a "quick shot" of only 81 days (once again, at it's closest approach)!