Earth is the third planet from the Sun and the only astronomical object known to harbor life. This is made possible by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all of Earth's water is contained in its global ocean, covering 70.8% of Earth's crust. The remaining 29.2% of Earth's crust is land, most of which is located in the form of continental landmasses within Earth's land hemisphere. Most of Earth's land is at least somewhat humid and covered by vegetation, while large ice sheets at Earth's polar deserts retain more water than Earth's groundwater, lakes, rivers, and atmospheric water combined. Earth's crust consists of slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth has a liquid outer core that generates a magnetosphere capable of deflecting most of the destructive solar winds and cosmic radiation.
Local runners can also target 1 discoverable race/event pages linked below when planning training blocks.
| Season | Typical weather | Running guidance |
|---|---|---|
| All seasons | Varies by location | Choose time slots with lower traffic and better weather. |
Surface mix: Mostly urban roads and mixed city surfaces.
Safety tip: Check route details and local traffic conditions before running GPS art routes.
Marathons and races
Popular runner events