This is a paid asset, but now you can download Countryside – Racing Track for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
Countryside – Racing Track v1.0
This package contains a racing track based on Countryside theme. This is mobile optimized having low draw calls and low triangle count. It is easy to use. Average triangle count is from 35k to 45k.
There are 38 unique props prefab are included to use. Those prefab contains Houses, trees, wood log etc.
Package includes
Racing Track
Two Lighting condition
Two skybox
Rain Drop particles
Track Collider
Materials are easy to change. There are only 4 materials has been used for the scene. Road Texture are 1024×2014 and others are 4K resolution.
Race track models are in single mesh and divided in many parts to reduce draw call