Website + Participant Guide Updates!

The Ironstone 100K site just got a little beefier:

UltraPacer Course Added

You can now obsess over every climb, descent, and contour with UltraPacer. It crunches the numbers: distance splits by time, grade, pace, ascent/descent, and more.

Warning: UltraPacer is a bit of a drama queen.

• It thinks the course is “hilly” from AS1 to AS4 (spoiler: it’s flat).

• It also claims there’s 9,200+ ft of climb. There’s not. But hey, it’s trying.

Updated Pace Chart

We gave you more breathing room between AS4 and AS6. You’re welcome.

More Course Data

Added surface types and terrain details, because knowing what you’re about to run into is kinda important.

Weather History

Want to see what the weather’s been like, hour by hour, the last three years? It’s in there. Use it to plan, overthink, or ignore entirely.

Check it all out on the site. Plan wisely—or just show up and hope for the best. Either way, Ironstone awaits.