# Uma Race Simulator (Umalator) - Full Documentation > Uma Race Simulator (also known as Umalator) is the ultimate free online companion for Umamusume Pretty Derby players. Our tool allows trainers to simulate race outcomes with high accuracy using real game mechanics, helping them optimize stat distributions, skill combinations, and racing strategies before committing valuable in-game resources. ## Project Background The Uma Race Simulator was created to solve a common problem for Umamusume players: the high cost of trial and error in training. Developing a competitive character requires significant time, stamina, and items. We envisioned a tool that could replicate the game's complex racing physics—including slope interactions, position keeping, skill activation logic, and stamina consumption—to provide a risk-free testing ground. Our mission is to empower every trainer, from casual fans to competitive Champions Meeting participants, with the data they need to build winning Uma Musume. ## Core Features & Content ### `https://umaracesimulator.blog/` - The Simulator The heart of our platform is the race simulator itself. It offers a comprehensive suite of testing tools: - **Course Selection**: Choose from all major race tracks and distances (Sprint, Mile, Mid, Long) including specific venues like Tokyo, Nakayama, and Kyoto. - **Detailed Build Configuration**: Input exact values for Speed, Stamina, Power, Guts, and Wisdom. - **Strategy Testing**: Compare performance across all four running styles: Runner (逃げ), Leader (先行), Betweener (差し), and Chaser (追込). - **Skill Management**: Add unique character skills and inherited skills to see how they impact race outcomes. - **Batch Simulation**: Run 20, 50, or 100+ races at once to average out RNG variance and get reliable win-rate data. ### `https://umaracesimulator.blog/#how-to-use` - Usage Guide A comprehensive tutorial designed to get new users up to speed quickly. It breaks down the simulation process into simple, actionable steps: 1. **Select Course**: How to match the simulator settings to your target race event. 2. **Input Stats**: Understanding the impact of each core stat on performance. 3. **Run & Analyze**: How to interpret the detailed result logs, including stamina usage graphs and position charts, to identify weaknesses in your build. ### `https://umaracesimulator.blog/blog/vfalator-vs-umalator-kachi-fork-guide/` - VFalator and Umalator Naming Guide This guide explains the relationship between VFalator, Umalator, Kachi Umalator, Kachi fork, and other community search terms. It helps players understand whether they need a general Uma Race Simulator, a fork-specific simulator reference, or a deeper Umalator usage guide before testing builds. ### `https://umaracesimulator.blog/blog/umamusume-support-card-tier-list-guide/` - Support Card Tier List Guide This guide explains how players should read Umamusume support card tier lists without blindly copying decks. It covers card roles, limit-break assumptions, distance-specific deck pressure, race bonus planning, and post-training validation with stamina and race simulation tools. ### `https://umaracesimulator.blog/blog/umamusume-race-bonus-guide/` - Umamusume Race Bonus Guide This mechanism guide explains how race bonus changes race rewards, how to compare a race-bonus support card with its training and event value, and when a race-heavy plan is worth the lost training turns. It links the decision to the Race Bonus Calculator, race planning, stamina checks, and repeatable simulator validation. Its three editorial illustrations are AI-generated concept visuals and are not official game screenshots. ### `https://umaracesimulator.blog/blog/umamusume-training-guide/` - Umamusume Training Guide This race-first training guide explains how to set a target race, identify the limiting requirement, build a support-card deck, make turn-by-turn decisions, plan inheritance, and validate the finished build with stamina, rating, race-planning, and simulation tools. Its three editorial illustrations are AI-generated concept visuals and are not official game screenshots. ### `https://umaracesimulator.blog/blog/umamusume-independent-training-guide/` - Umamusume Independent Training Guide This practical guide explains how to choose an Independent Training agenda, when Balanced, Sprint, or Stamina priorities make sense, how to start an automated run, and how to review the finished stats, skills, aptitudes, and race fit. Its three editorial illustrations are AI-generated concept visuals and are not official game screenshots. ### `https://umaracesimulator.blog/blog/umamusume-character-tier-list-guide/` - Character Tier List Guide This guide explains how players should read Umamusume character tier lists without blindly copying a generic ranking. It covers distance and surface fit, running style, unique skill timing, growth bonuses, inheritance pressure, support card constraints, account/server context, and a practical validation workflow with stamina and race simulation tools. ### `https://umaracesimulator.blog/blog/umamusume-skill-tier-list-guide/` - Skill Tier List Guide This guide explains how players should read Umamusume skill tier lists without buying skills blindly. It covers activation timing, effect type, distance and running-style fit, skill point opportunity cost, inheritance/support access, and a validation workflow with stamina and race simulation tools. ### `https://umaracesimulator.blog/blog/umamusume-skill-activation-guide/` - Skill Activation Guide This guide separates learning a skill from seeing it activate. It covers Wit, distance and surface eligibility, running style and position conditions, race-phase timing, common activation mistakes, and a repeatable workflow for comparing builds with the simulator. Its editorial concept illustrations are not official game screenshots. ### `https://umaracesimulator.blog/blog/` - Guides Index The blog index collects Umalator usage, VFalator/Kachi naming, training simulation, inheritance, support card tier list, character tier list, stamina, race bonus, and race planning resources in one crawlable guide hub. ### `https://umaracesimulator.blog/tools/umamusume-tier-list-maker/` - Umamusume Tier List Maker This free browser tool lets players build a drag-and-drop tier board for Umamusume characters, support cards, skills, or Champions Meeting shortlists. It supports editable tier labels, local sample data, text export, and links into the existing character, support-card, skill, rating, and Umalator validation workflow. ### `https://umaracesimulator.blog/tools/umamusume-race-bonus-calculator/` - Umamusume Race Bonus Calculator This free calculator helps players compare support-card race bonus setups before committing to a race-heavy training plan. Users enter optional races, goal races, expected wins, scenario bonus, and support-card race bonus percentages, then receive a bonus-weighted planning score. The page is designed to complement the simulator: plan race value first, then test final stats, stamina, skills, and strategy in Umalator. ## User Value By using Uma Race Simulator, players gain a significant competitive advantage. Instead of guessing which stats are sufficient for a specific race, users can scientifically verify their builds. This leads to: - **Resource Efficiency**: Save training items and TP/RP by only training builds that are proven to work. - **Strategic Depth**: Understand hidden game mechanics like "stamina eater" effects or position-keeping logic that aren't visible in the main game. - **Champions Meeting Success**: Specifically tune characters for the unique conditions of monthly competitive events, testing against meta-builds to ensure victory. ## Latest Updates ### `https://umaracesimulator.blog/` - 2026 Core Update *Updated: February 2026* The simulator has been updated to reflect the latest balance adjustments in the global version of Umamusume Pretty Derby. Key improvements include refined stamina consumption formulas for Long distance races and updated skill activation triggers for recently released support cards. This ensures that your simulation results remain accurate and relevant for the current competitive meta. ### `https://umaracesimulator.blog/blog/umamusume-champions-meeting-guide/` - Champions Meeting Guide This course-first guide explains Champions Meeting progression, league and round planning, three-runner team roles, stamina and acceleration checks, matchup testing, rewards, and repeated simulator validation. ### `https://umaracesimulator.blog/blog/umamusume-spurt-rate-guide/` - Umalator Spurt Rate Guide This troubleshooting guide explains what Spurt Rate measures, why a build can show 0% Spurt Rate with 100% Survival, how to test stamina and recovery changes under controlled conditions, and which simulator limitations prevent the number from being treated as win rate. ### `https://umaracesimulator.blog/blog/umamusume-friend-finder-guide/` - Umamusume Friend Finder Guide This guide explains how to find and verify public Trainer IDs for borrowed support cards or inheritance candidates. It separates friend-finder intent from parent-finder and tier-list intent, compares in-game ID search with community databases and lineage planners, and provides a server, filter, freshness, privacy, and verification workflow. ### `https://umaracesimulator.blog/blog/umamusume-team-trials-guide/` - Umamusume Team Trials Guide This guide explains how to cover Sprint, Mile, Medium, Long, and Dirt with a repeatable roster plan. It separates Team Trials score from a single win, compares placement and skill activation, assigns runner roles, reviews promotion risk, and links the planning workflow to the simulator, rating calculator, and stamina calculator.