This picture is a close-up of one of the giant Pillars that is jetting dust and gas out of the Carina Nebula, taken by the Hubble Deep Field Camera.  These jets are being pulled from the nebula as the result of the monstrous forces from, and being worn away by the radiation of nearby stars.  The Carina Nebula is 7500 light-years away from Earth.  Our Solar System would be as large as one pixel.

To walk 1 light-year, at a moderate pace of 20 minutes a mile, it would take you 225 million years to complete your journey, (not including stops for meals or the restroom).  If you started just before dinosaurs appeared on Earth, you'd probably be finishing your hike just about now.  Even if you hitched a ride on N.A.S.A.'sMach 9.68x- 43A Hypersonic Scram Jet, the fastest aircraft in the world, it would take about 95,000 years to cover the distance.

You'll need a pretty big travel bag too; walking such a distance requires substantial supplies.  You'd need 2 trillion Power Bars to fuel your trip.  You'd also produce a heap of worn-out shoes.  The typical pair of sneakers will last you 500 miles, so you'd burn through some 11.8 billion pairs of shoes; and all that effort wouldn't get you very far, astronomically speaking, because the closest star to our Sun, is Proxima Centauri which is 4.22 light-years away!