Project
SUBTHREE
26.2 miles under 3 hours
This isn't for everyone. But if you're the kind of runner who thinks about pace in the shower and adds an extra mile just to hit a round number — you might have a sub-three in you. Let an AI companion get to know you and help you find out.
What it is
Not a chatbot. A companion that knows your training and can actually do something about it.
Every conversation has the full context of your running — what you've done, what's coming up, how you're feeling today. When life changes, the plan changes. When you finish a run, it's logged. When you ask “am I really on pace for sub-three?” — you get the math, not the platitudes.
How it works
Three things most AI tools get wrong.
Knows you
Your history, fitness, target race, weekly mileage, what you did yesterday. The companion remembers — so you never start a conversation from zero.
Adapts to life
Played a long set of tennis last night? Sick on a long-run day? The plan rewrites itself — and shows you how your probability of breaking three shifts in real time.
Takes action
Tell it you finished your long run. It marks it. Ask for a taper week. It builds one. Tool use, not just talk — the companion does the work, you stay in the conversation.
Inside the app
Chat on the left. Your training on the right. Always in sync.
2:59:59
One second under three hours. That's the only number that matters. Let's find out if it's in you.
Start your sub-three