This week on The Running Mullet:

We’re heading deep into the mountains of Pennsylvania for one of the toughest, muddiest races on the East Coast: Worlds End Ultramarathon.

From the tough climbs of the Loyalsock Trail to the rock gardens, waterfalls, creek crossings, and endless rollers, Worlds End isn’t just a race — it’s a survival experience.

The 50k offers up nearly 6,000 feet of climbing, while the legendary 100k throws down over 12,000 feet with a strict 19-hour cutoff.

This race has built a reputation as one of the hardest and most scenic ultras in Pennsylvania — and one runners obsess over all year because registration disappears in minutes. On this episode:

• What makes Worlds End so memorable
• Why this course humbles even experienced ultrarunners
• Race strategy, cutoffs, and s ...