The Deepest Classes and Average Field Sizes
A placing in a 5-horse class isn’t the same as a placing in a 170-horse class. The deepest class in the database ran 171 entries, and across the classes I’ve collected, average field size differs enormously by discipline — from 81 horses down to just 2.
This page lists the deepest classes — where a placing means beating the most horses — and how big each discipline’s fields run on average.
Based on 86,281 placings · analysis refreshed Aug 2026.
The deepest classes
Top classes by entries, from the shows in the database. Placed is the number of riders with a posted numeric placing (entries can exceed it — not everyone who enters places):
| Class | Discipline | Entries | Placed |
|---|---|---|---|
| NRHA Open Reining Level 4 Futurity Congress | Reining | 171 | 31 |
| Senior Barrel Racing Congress | Barrels | 162 | 15 |
| NRHA Green Reiner Level 2 Congress | Reining | 125 | 15 |
| Level 1 Youth Horsemanship 14-18 Congress | Horsemanship | 115 | 15 |
| NRHA Rookie Reining Level 2 Congress | Reining | 114 | 15 |
| Congress Barrel Racing Sweepstakes Congress | Barrels | 110 | 15 |
| NRHA Open Reining Level 2 Futurity Congress | Reining | 108 | 30 |
| Level 1 Ranch Trail Congress | Ranch Trail | 107 | 15 |
Every single class in the top 8 is from the 2025 All American Quarter Horse Congress — the sport’s biggest show — and Reining and Barrels dominate the deepest classes. Note how many classes show only 15 placed despite 100+ entries: entrycounts reflect who’s in the class, not who actually shows up and places.
Average field size by discipline
Mean entries per class within each discipline, over the same placed-class set. Disciplines with few classes are noisy — treat small Classes counts as hints:
| Discipline | Avg entries | Classes |
|---|---|---|
| Barrels | 81.3 | 12 |
| Working Western Rail | 48.5 | 12 |
| Reining | 39.0 | 80 |
| Roping | 28.3 | 40 |
| Western Rail | 22.2 | 30 |
| Pole Bending | 21.4 | 24 |
| Ranch Riding | 20.5 | 165 |
| Showmanship | 19.1 | 175 |
| Ranch Trail | 18.9 | 124 |
| Horsemanship | 18.6 | 180 |
| Trail | 17.5 | 265 |
| Western Pleasure | 15.9 | 296 |
| Hunt Seat Equitation | 14.0 | 182 |
| Hunter Under Saddle | 13.7 | 282 |
| Western Riding | 12.3 | 127 |
| Halter | 6.6 | 506 |
A clear three-tier structure emerges:
- Speed events run deep — Barrels (81) and Reining (39) draw the biggest fields by far.
- Pattern and rail classes sit mid-pack — Ranch Riding, Showmanship, Horsemanship, Trail all average roughly 17–21.
- Halter is enormous in participation but tiny in field size — 506 classes averaging just 6.6 entries, a reflection of how many separate halter divisions there are versus how few horses enter each.
Methodology & caveats
- Classes are those with at least one Combined Judges numeric placing; the entrycount comes from the show schedule, deduped per class (the schedule holds duplicate rows for some classes).
- Entrycounts are the scheduled entries, not the number of riders who actually showed up and placed — a scratch-heavy class can place far fewer than it entered.
- “Deepest in the database” is not “deepest in the sport.” The database covers the shows I’ve ingested so far, so the ranking reflects which shows are in the dataset — the 2025 Congress dominates because that’s a huge show — not every show ever run.
This is one of a series of data articles built on my equine-data results database — a personal AQHA show-results explorer that analyzes every class in the dataset.