Sigwren

Sigwren is an AI coaching platform built for ultra-distance and trail runners — and the coaches who guide them.

Instead of generic plans, Sigwren builds your training from your real physiology and your actual races. It reads the signals your watch already captures, models your readiness each morning, and adapts the plan to how you're recovering — not to a fixed calendar.

FOR ATHLETES
• Adaptive training plans built around your goal races and your current fitness
• Daily readiness from overnight heart-rate variability, resting HR and sleep
• Metabolic and threshold profiling from your own workout data
• Race intelligence - course demands, pacing and fuelling for the events you've entered
• Record runs with GPS, sync from Garmin, Suunto, COROS, Polar, Oura and Health Connect
• Ada, your AI coach, explains every recommendation — transparent, never a black box

FOR COACHES
• A morning brief that surfaces who needs attention and why
• Author and assign plans that personalise to each athlete's thresholds
• Track readiness, compliance and capability trends across your roster

Every recommendation is grounded in real sports science, confidence-tagged, and fully overridable. Connect the devices you already use and let Sigwren turn your data into training that actually fits you.

Sigwren works best with a connected wearable and is designed for committed endurance athletes training for trail, ultra and road events.