3 essential marathon training runs ↓ Trying to get everything right during your marathon training can feel overwhelming. But if you focus on these 3 key runs each week, you’ll cover the fundamentals that truly move the needle. Here’s the breakdown: ⚡ Long run: this is your most important weekly session. It teaches your body to run longer, builds endurance & mental resilience, and trains your gut for race-day fueling. - Gradually build up to a 32-35km long run (20-22 miles) - Practice your full r