race

race is a skill for Claude Code, Codex from rlacombe/switchback-running. It costs 18 tokens per session (882 once invoked), scanned A, original, MIT.

A race-day planning guide covering pacing, food and drink, aid stations, mental strategies, and tapering, the reduction of training before a race.

In plain words
What is it for?
Use it to prepare a plan for an upcoming race, including pace targets, nutrition and fluid intake, aid-station decisions, environmental factors, and responses to difficult moments.
Why use it?
It brings recent training, recovery, fitness, and race details together so the athlete has an execution plan for race day.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/rlacombe/switchback-running/race
Any agent
npx skills add rlacombe/switchback-running --skill race
Clone the repo
git clone --depth 1 https://github.com/rlacombe/switchback-running

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for race

README.md
[![agentmods](https://agentmods.dev/badge/skills/rlacombe/switchback-running/race.svg)](https://agentmods.dev/skills/rlacombe/switchback-running/race)
Your own site
<a href="https://agentmods.dev/skills/rlacombe/switchback-running/race"><img src="https://agentmods.dev/badge/skills/rlacombe/switchback-running/race.svg" alt="Measured on agentmods" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 882 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00018 $0.00882
Opus 5 $0.00009 $0.00441
Sonnet 5 $0.00004 $0.00176
Haiku 4.5 $0.00002 $0.00088

Measured 3d ago against content hash 5ba59793bb24, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

race scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/race/SKILL.md · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/race — Race-Day Strategy

Builds a comprehensive race-day plan for the athlete's target race. The user may specify a race or default to the one in their athlete profile.

Step 1: Read knowledge base

Read these coaching files for expert protocols:

  • knowledge/race-execution.md — pacing, ADAPT framework, aid stations
  • knowledge/taper.md — taper check, sharpening
  • knowledge/nutrition.md — cal/hr, carb/hr, fluid targets, Bullseye plan
  • knowledge/heat-altitude.md — environmental preparation
  • knowledge/mental-performance.md — associative/dissociative strategies, crisis protocols

Step 2: Gather data

Fetch data using MCP tools (call them directly, in parallel where possible):

  • Fitness endpoint for the last 21 days — CTL/ATL/TSB trend into race day
  • Events endpoint for the next 14 days — remaining workouts and taper check
  • Activities endpoint for the last 30 days — recent training volume and long runs
  • Wellness endpoint for the last 7 days — sleep, HRV, fatigue trends

Read athlete/profile.md for race details (distance, elevation, cutoffs, key cutoffs) and cached zones.

Step 3: Build the race plan

Pacing Strategy

  • Estimate finish time range based on current CTL, recent long run performances, and race profile
  • Break the race into segments (e.g., by aid station) with target pace ranges
  • Flag any tight cutoffs given projected pace
  • Account for elevation — slower on climbs, faster on descents, with specific pace adjustments
  • Reference Koop's "stay in the moment" pacing — focus on current segment, not the whole race

Nutrition Plan

  • Set cal/hr and carb/hr targets based on athlete weight and expected intensity (use knowledge/nutrition.md)
  • Plan what to carry vs pick up at aid stations
  • Fluid and sodium targets (600-800mg sodium/L)
  • Gut training check — has the athlete practiced this plan in training?
  • Warn about under-fueling (most ultrarunners consume 80-120 cal/hr vs 240-260 recommended)

Aid Station Plan

  • Time estimate for each aid station based on pacing
  • What to do at each stop: refill, eat, gear change, crew access
  • Keep it efficient — get in, get out (Koop)
  • Mark crew-accessible stations and drop bag locations

Read the full file on GitHub · 82 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 82 lines · 18 tokens per session scan A 5ba59793bb24

Subscribe to this mod's changes

race is a skill published in the GitHub repository rlacombe/switchback-running (11 stars, last pushed 8d ago), licensed MIT. It adds 18 tokens to every session and 882 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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