Hello and welcome to my short guide for Hecarim!
This build works in top lane as well as the jungle.
If you want to try out something new I strongly recommend trying out this build, because it's so much fun! + It also works well.

PS. This is my first guide EVER, so please, tell me what I should improve etc. :)

Hecarim is usually played as a jungler because of his mobility and good clearing with his Rampage. Jungle builds are usually just Elder Lizard, Trinity Force/Frozen Fist and tanky items. I've made my own, more fun, build for the Pony.
Hecarim (with this build at least) has on OK early game, but excels at mid/late game when you get your major items. After getting your Statikk Shiv you get a huge damage boost, same with Youmuu's Ghostblade and Trinity Force.

The main idea of this build is attack and movement speed, but also being tanky, at least in late game. Let's get started on the items!

Start with Doran's blade or Doran's Shield if you are against a heavy poke champion, for example Quinn, Nidalee. If jungling, start with Hunter's Machete and 4x Health Potions.

More movement speed and easy to stick to your target if you get the Furor enchantment.

Rush this item. It offers high burst when combined with your Devastating Charge. Also offers attack speed and movement speed; all around good item. If jungling, get Spirit of the Elder Lizard before Statikk shiv.

One of my favourite items in the game at the moment. It offers armor penetration and the amazing active; attack speed and movement speed. You can also combine this with your Devastating Charge for ton's of damage and easy chasing or getting away. Use this item often, since it only has a 45 second cooldown!

Trinity Force offers many good stats and the Sheen procs are great with your Rampage, since it is on such a short cooldown. Your Devastating Charge will also burst harder with this item.

Overall a great tank item, especially against autoattacking champions reliant on attack speed. Consider getting at least the Glacial Shroud while building Trinity Force, if you feel you are too squishy or an AD enemy is getting fed.

A good item vs. AP, also more healing from your Spirit of Dread. Consider getting at least the Spectre's Cowl while building Trinity Force, if you feel you are too squishy or an AP enemy is getting fed. If the enemy team is full AD, replace this iteam with Thornmail or Guardian Angel.

The runes I used are not necessary, you can replace the movement speed quintessences with AD quints or something else you like to use. The rest are pretty standard stuff.

Skill sequence is quite standard for Hecarim. Maxing Q gives the best damage output and maxing E second gives good utility and more damage.

Quite a standard summoner spell for top lane. Replace with Ignite if you want.

Great summoner spell for Hecarim; it gives movement speed which means you get more AD. Use this when going for an all in or when chasing, escaping. At level 1 with Doran's blade, my runes and masteries this spell will give you 13 bonus AD!

You can take flash instead of ghost, but I wouldn't recommend it. Ghost has too good a synergy with Hecarim to not be ignored.

When laning with Hecarim, your early levels will highly depend on your opponent. If you get ahead through a good trade using your Devastating Charge and Rampage, you can usually all in the enemy at levels 3-4 using your E and Ghost for the damage boost.

A trick you can do when you have traded with your opponent and you are about to go all in:
Use your Devastating Charge prematurely in a bush and wait for you opponent to get close to you. Then charge on your opponent with Ghost and you will do Tons of damage. Keep in mind, that your E lasts for 4 seconds, so be sure to charge at your enemy early enough.

Please leave a comment/rating for this guide if you found it to be useful or even something close to that. :)