It’s hard to resist the Bay Trail, or the “Solar System Trail” which keeps you going from Pluto to the Sun with the astrophysics themed artwork scaled down to the length of this seaside path. This 10 km (one-way) path, with water views nearly the whole way, is decorated all the way from St. Kilda Beach to Sandridge Beach with sculptures of the Sun Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and even poor dejected former planet Pluto. The accurately scaled and distanced markers are a good way to track your mileage, and an even better way to keep you inspired as you try to hit them all. Although, the beautiful scenery around the beaches of Port Phillip Bay has plenty of inspiration in itself. You can even drop down to the beach and run on the sand for a while near Middle Park without missing a planet.