Your Concept2 log, read properly.
Export your Concept2 Logbook as CSV. Drop it into Baseline. In under a minute you get a full read: 500 m, 1 k, 2 k, 5 k, 6 k, 10 k, 30-min and 60-min benchmarks; your percentile in the Concept2 world rankings for your age × weight × sex bracket; weekly volume across your history; and split, watts and stroke-rate trends over 90 days. Nothing is uploaded to a server. Nothing is kept unless you sign in and click save.
No login. Your CSV never leaves your browser.
What you get
A full benchmark tracker.
500 m, 1 k, 2 k, 5 k, 6 k, 10 k, 30 min, 60 min — pulled from your fastest efforts across the history you upload. Extrapolated benchmarks are flagged, never faked.
Your Concept2 world-ranking percentile.
Age × weight × sex bracket, using the official Concept2 world-ranking data. If we don't have your age or weight, the report says "unranked bracket" rather than making something up.
Split, watts and stroke-rate trends.
90-day median trends with an IQR band, cleaned of sessions with missing HR or watts data. Direction only appears when there are enough sessions to say so honestly.
Reference — typical 2 k times by age
A snapshot of Concept2 world-ranking data. Men, heavyweight, approximate top-of-bracket.
| Age | 2 k time |
|---|---|
| 19–29 | 6:40 |
| 30–39 | 6:50 |
| 40–49 | 7:00 |
| 50–59 | 7:15 |
| 60–69 | 7:35 |
| 70+ | 8:00 |
FAQ
Do you keep my data?
Raw fitness files never leave your browser. Baseline parses your CSV locally and discards it when the tab closes. If you sign in and save, only the derived Baseline — your metrics, PBs and badges — is stored on our servers. The original CSV is never uploaded.
Does the percentile use my exact age?
Percentiles are bucketed into standard Concept2 age bands (19-29, 30-39, 40-49, 50-59, 60-69, 70+). Bring your age, sex and weight for an accurate bracket.