Go has primitives that are designed to provide strong concurrency capability, but concurrency is not the same as parallelism.
If you have more than one processor core, and if your GOMAXPROCS environment is set to be more than 1, then you may see some parallelism in addition to concurrency, assuming the appropriate goroutines.
As of Go 1.5 the default setting for GOMAXPROCS is the number of CPU cores. Prior versions of Go default the GOMAXPROCS setting to 1.
William Kennedy had a good write up about the differences a couple years ago: http://www.goinggo.net/2014/01/concurrency-goroutines-and-gomaxprocs.html