Last Saturday, I challenged myself with a paced long run over undulating terrain—something that would have intimidated me years ago. This time, I focused less on exact splits and more on effort, using normalized grade pace to measure my true performance. The result? It confirmed that my effort level was spot on for marathon pace, proving that pace isn’t just about flat ground. Embrace the hills and let effort guide you! How do you balance pace and terrain in your runs? Share your toughest route