Research suggests that it is better to eat before a bike ride rather than after. Post-ride nutrition is important for recovery, but not being adequately fueled for a long or strenuous ride can hinder performance and training capacity and potentially be dangerous for the rider [1
Here are some instances where you should consider eating before a bike ride:
Morning rides following an overnight fast
Longer rides lasting >60 minutes
High-intensity rides lasting >45 minutes
If you’re focused more on general health or weight loss than cycling performance, eating before a bike ride isn’t always necessary. If your last meal was within 2-3 hours, you can probably skip the snack before moderate-intensity rides lasting less than 60 minutes.