How long do you need to train before running a marathon?
Experts recommend at least 3-6 months of training before running a marathon for the first time. This also depends on your physical fitness when you start training.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: How long do you need to train before running a marathon?
### Input: 
### Response: Experts recommend at least 3-6 months of training before running a marathon for the first time. This also depends on your physical fitness when you start training.