How fast should I be doing my long runs? This is a very common question, especially among those new to distances like the marathon.
Should you walk or run for exercise? Here's what the science says. - Vox
Your Guide to Achieve 4 Hour Marathon Pace
Marathon Monday: Marathon Long Run Tips
Get Better This Year & Every Year; Train Like Molly Seidel Or Taylor Swift; The Best Marathon Warmup, by Amby Burfoot, Runner's Life
5 Running Speed Workouts for 5 Different Race Distances — Runstreet
Finding Your Best Long Run Pace: Key Factors and Strategies
Marathon Training: The Final Hard Week
Long Run Pace vs Marathon Pace: Which to Choose?
Marathon Long Run Part 2 - Luke Humphrey Running
Chicago Endurance Sports
The Ultimate Treadmill Guide For Comrades Marathon Training
Marathon Long Runs: Empty Stomach or Fully Fueled? - Runners Connect
This cross country and track coach holds the American age-group record in the mile
Runner's Guide To Chicago Marathon Training: A MUST Have
How to Improve Easy Run Pace: Tips from Experts