Demo
Capacity Profiler
Know what this athlete needs most right now.
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Example output
1.Quick Read
This profile has plenty of shorter-event ability for the current 5K mark. The 800m-to-1600m relationship is balanced, while the 3200m and 5K relationships lean slightly toward a longer-event-support gap. The pattern is consistent enough to investigate, but the differences are small enough that I would treat this as a coaching question—not an athlete-type label.
2.Ratios at a Glance
These bands are RBN framework heuristics. They help organize the question; they do not diagnose the athlete.
| Comparison | Ratio | RBN framework heuristic | Plain-language read |
|---|---|---|---|
| 800m/400m | 2.2727 | 800m-target heuristic only | Out of scope for a 5K XC profile |
| 1600m/800m | 2.2400 | Balanced: 2.18–2.24 | Balanced, at the upper edge |
| 3200m/1600m | 2.1607 | Balanced: 2.09–2.15 | Just above the band; longer-event support is the question |
| 5K/3200m | 1.6612 | Balanced: 1.60–1.66 | Just above the band; the same question continues |
| 5K/1600m | 3.5893 | Balanced core: 3.45–3.54 | Upper shoulder; useful signal, but non-categorical |
3.What Stands Out
The profile does not contain one dramatic break. It contains a small, repeated drift as the races get longer.
The 2:05 800m and 4:40 1600m sit in balance. The 10:05 3200m falls only a few seconds beyond the balanced range created by the 1600m, and the 16:45 5K falls less than a second beyond the range created by the 3200m. Individually, neither difference should drive a major conclusion. Together, they make longer-event carry worth investigating.
The 5K mark is identified as track while the target is 5K XC. That still gives us useful capacity information, but it does not tell us how this athlete handles hills, footing, packs, or course-specific demands.
4.Coaching Hypothesis
The best hypothesis is that the athlete's shorter-event capacity is carrying into the 5K a little less completely than the RBN relationships would suggest. For a 5K target, that points the coach toward investigating longer-event support through Direct Endurance and Endurance Support—not because speed is a weakness, but because the existing speed may not yet be fully expressed over the longer demand.
The strength to preserve is the balanced 800m-to-1600m relationship. An overcorrection toward longer work could improve one side of the profile while dulling an ability the athlete already owns.
5.What Would Confirm It
The hypothesis gets stronger if recent, comparable performances show the same drift; if the athlete controls shorter repetitions but loses rhythm as work units or races extend; or if improvements at 800m and 1600m repeatedly fail to carry into the 3200m and 5K.
It gets weaker if the 3200m or 5K marks were older, poorly paced, or run in meaningfully worse conditions; if current workouts show strong control as efforts extend; or if a representative XC race already shows better longer-event carry than the track mark suggests.
The useful question is not “Is this athlete fast or endurance-based?” It is “Where does the athlete stop carrying an existing strength forward?”
6.Balanced-Equivalent Reference
This is a balanced-equivalent starting model, not a prediction or a goal.
| Starting mark | Balanced-equivalent reference | Supplied mark |
|---|---|---|
| 800m in 2:05 | 1600m in 4:32.5–4:40.0 | 4:40 |
| 1600m in 4:40 | 3200m in 9:45.2–10:02.0 | 10:05 |
| 1600m in 4:40 | 5K in 16:06.0–16:31.2 | 16:45 |
| 3200m in 10:05 | 5K in 16:08.0–16:44.3 | 16:45 |
The table shows why the profile deserves attention without exaggeration: the shorter relationship is balanced, and the longer marks sit just beyond the corresponding references. Goal points are a coaching decision, not a chart read.
7.Coach's Call
The question worth testing is whether this athlete needs better longer-event support to express the speed already present. Preserve the shorter-event strength, compare the hypothesis with what you see in races and extended work, and watch whether the profile begins to close from the 1600m outward. The ratios point to the question; you make the training decision.
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