This episode answers a listener question: how can you prevent a pace drop at the end of your marathon? This is such a common question for so many runners! So many factors go into not hitting the wall during a marathon: training, fatigue resistance, nutrition, pacing, and more. 
Discussion points include:

Why glycogen depletion can cause you to slow down (2:05)
Gender and age differences in slowing down during a marathon (3:40)
Does the length of your training runs impact your fatigue resistance? (6:30)
The role of hydration in marathon performance (8:00)
Carbohydrate intake during a marathon (10:20)
How to set an appropriate marathon goal time (12:00)
Training volume and marathon training workouts for fatigue resistance(15:50)
Recovery nutrition, long run nutrition, and carb loading (19:45)
How to not slow down from hills in your marathon (21:40)
Can a tune-up race help you run a faster marathon? (23:45)

If you enjoyed this episode, you may also like:

All about marathon pacing (ep 6)
First marathon training tips (ep 17)
What to eat before a race (ep 20)
Mastering your mindset (ep 23)
How many miles should you run per week? (Ep 27)
How to taper for a marathon (ep 30)

Please excuse how Laura sounds, she had a sinus infection at the time of recording! 
References: 
PMID: 34010308
PMID: 32922647
PMID: 24901444