If you want to increase your running speed, you can buy Coffee in the Saloon for $300, which will increase your running speed for two minutes. Make sure to stock a lot of those if you are going for this option.
You also have the possibility to use some cooking recipes to craft the following items :
- A Pepper Poppers for 1 Hot Pepper and 1 Cheese
- A Spicy Eel for 1 Eel and 1 Hot Pepper
- A Super Meal for 1 Bok Choy, 1 Cranberry and 1 Hazelnut.
All of those will also add one point to your speed for a certain
amount of time.
Later in the game, you can also obtain a horse as soon as you will have built a Stable. The stable comes with the horse when you buy it which is an added bonus.