Ten thousand Americans turn fifty every day. Most get advice on slowing down. This is for the ones who want to go faster.

You already know you're not done. You signed up for the marathon. You're eyeing a 70.3. You looked at a mountain last summer and thought I could still do that. Nobody needs to convince you.

What you don't have is a plan built on your own data.

TheNextHill exists for one reason: to close the gap between what you want to do and what your body is actually ready for. Not someday. This year.

You connect your wearable — Garmin, Apple Watch, WHOOP — and TheNextHill reads your real numbers. Heart rate variability. VO2 max. Recovery trends. Sleep quality. Then it builds you a plan: here's what you can do now, here's what you're six months away from, and here's exactly what needs to improve to close the distance. A sixty-three-year-old woman training for Leadville doesn't get the same plan as a fifty-one-year-old chasing a sub-five Ironman. That's the whole point.

The Origin Story

The founder is David Rabjohns, who'd already built and sold a technology company, retired at fifty, and was filling the years with motorcycles, triathlons, and the kind of restless energy that doesn't know how to sit still. Then, at sixty, a surgeon replaced a section of his ascending aorta with a synthetic graft.

Six weeks later he was in a recliner in Wilmette, Illinois, watching his Garmin track his body coming back to life. Heart rate improving. Sleep getting deeper. Body battery creeping up. He already knew what he wanted to do next — a marathon, an Ironman, a motorcycle expedition. What he didn't have was a way to turn the data on his wrist into a plan to get there.

Nobody was building that. So he did.

He didn't build TheNextHill despite the surgery. He built it because of it. That recliner was just another starting line — the same one millions of people over fifty are standing at right now, staring at data they can't translate into action. The ambition was never the problem. The plan was.

What This Isn't (And What It Is)

This isn't a retirement website. It isn't a medical platform. It isn't a bucket-list generator that suggests you "learn to paint" and "try yoga." Nothing against painting or yoga. David does both. But if you've already picked your next race, your next summit, your next expedition — and you want a data-driven plan to get you to the start line ready — then this is for you.

TheNextHill is a planning tool for people who are already in motion. You tell it where you want to go. Your wearable tells it where you are. It builds the bridge between the two — specific, personal, grounded in your numbers. No guesswork. No generic age-based assumptions. No one telling you to take it easy.

Just your data, your ambition, and a plan to close the gap.