Source: https://guthlabs.ai/docs/instrument-workflows/running-coach/

instrument chain / verified-workflow-definition

# Running Coach Kit

Current fitness to race plan.

Status: **observed**Lifecycle: **verified-workflow-definition**

## Goal

Current fitness to race plan.

## Instrument chain

- 01

**[Pace / Split Calculator](<https://guthlabs.ai/docs/instruments/pace-split-calculator/>)**

training paces

VERIFIED

- 02

**[Race Time Predictor (Riegel Formula)](<https://guthlabs.ai/docs/instruments/race-time-predictor-riegel-formula/>)**

goal projection

VERIFIED

- 03

**[Heart Rate Zone Calculator](<https://guthlabs.ai/docs/instruments/heart-rate-zone-calculator/>)**

intensity

VERIFIED

- 04

**[VO2max Estimator (non-exercise / walk test)](<https://guthlabs.ai/docs/instruments/vo2max-estimator-non-exercise-walk-test/>)**

fitness

VERIFIED

- 05

**[Hydration Needs Estimator](<https://guthlabs.ai/docs/instruments/hydration-needs-estimator/>)**

fueling

VERIFIED

- 06

**[BMR/TDEE (Mifflin-St Jeor)](<https://guthlabs.ai/docs/instruments/bmr-tdee-mifflin-st-jeor/>)**

energy budget

VERIFIED

## Handoffs and cross-checks

A known race feeds Riegel; predicted pace feeds splits; zones bound training intensity.

## PointGuard stance

Riegel extrapolation degrades beyond ~2× distance — always disclose the confidence horizon.

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `INSTRUMENT_COMBOS.json`

- `VERIFIED_LEDGER.json`