How to Set Rowing Splits: A Practical Guide for Every Training Zone

April 17, 20265 min read

Knowing what split to hold is one of the most important — and most asked — questions in erg training. This guide walks you through calculating target splits for every training zone from a single benchmark.

What splits are and why they matter

Your split is the time it would take you to row 500 metres at your current pace. It's displayed as /500m on the monitor. Splits let you compare effort across different workout durations and distances, making them the universal currency of erg training.

Without target splits, every session becomes guesswork. With them, you know exactly whether you're training in the right zone.

Step 1: establish a 2K benchmark

Everything starts from your 2K erg score. It doesn't need to be a maximal race effort — a hard, honest test where you gave your best is enough.

If you haven't done a 2K recently:

Go all-out for 2,000 metres after a thorough warm-up
Record your average split (not your best split — the average)
See the 2K Erg Training Guide for test-day tips

If you don't have a 2K but you have a 6K or 60-minute score, you can estimate your 2K. As a rough guide:

2K split ≈ 6K split − 8–10 seconds
2K split ≈ 60-minute split − 15–20 seconds

These are approximations — an actual 2K test is always better.

Step 2: calculate zone splits

From your 2K average split, add seconds to get each training zone:

| Zone | Name | Add to 2K split | Example (2K = 1:50) | |---|---|---|---| | UT2 | Steady-state | +20–26 sec | 2:10–2:16 | | UT1 | Moderate aerobic | +14–18 sec | 2:04–2:08 | | AT | Anaerobic threshold | +8–12 sec | 1:58–2:02 | | TR | Transport | +4–6 sec | 1:54–1:56 | | AN | Anaerobic | +0–3 sec | 1:50–1:53 | | Max | Sprint | Faster than 2K | Under 1:50 |

These offsets are widely used in rowing programmes and align with the zones explained in Rowing Pace Zones.

Step 3: adjust for distance and duration

Your target split for a specific workout depends on the interval length:

| Interval length | Zone | Guideline | |---|---|---| | 500m or less | AN–Max | At or faster than 2K pace | | 1,000m | TR–AN | 2K +2–5 sec | | 2,000m | AT–TR | 2K +6–10 sec | | 5,000–6,000m | UT1–AT | 2K +12–18 sec | | 10,000m+ | UT2–UT1 | 2K +18–24 sec | | 30–60 min continuous | UT2 | 2K +20–26 sec |

Longer pieces demand slower splits. Trying to hold 2K pace for a 10K will end badly.

Quick reference table

Here's a ready-made lookup for common 2K scores:

| 2K pace | UT2 range | UT1 range | AT range | |---|---|---|---| | 1:40 | 2:00–2:06 | 1:54–1:58 | 1:48–1:52 | | 1:45 | 2:05–2:11 | 1:59–2:03 | 1:53–1:57 | | 1:50 | 2:10–2:16 | 2:04–2:08 | 1:58–2:02 | | 1:55 | 2:15–2:21 | 2:09–2:13 | 2:03–2:07 | | 2:00 | 2:20–2:26 | 2:14–2:18 | 2:08–2:12 | | 2:05 | 2:25–2:31 | 2:19–2:23 | 2:13–2:17 | | 2:10 | 2:30–2:36 | 2:24–2:28 | 2:18–2:22 | | 2:15 | 2:35–2:41 | 2:29–2:33 | 2:23–2:27 | | 2:20 | 2:40–2:46 | 2:34–2:38 | 2:28–2:32 |

Watts vs splits: when to use which

Splits and watts measure the same thing — power output — but on different scales. Watts scale linearly with effort, while splits don't: dropping from 2:00 to 1:55 requires significantly more power than dropping from 2:10 to 2:05.

Use splits for: day-to-day training, setting targets, pacing races. They're intuitive and directly readable on the monitor.

Use watts for: comparing across body weights, tracking progress over time, understanding the actual effort difference between zones. The watts calculator converts between splits and watts instantly.

Rate and split relationship

A common misconception: lower rate means slower split. Not necessarily.

At lower rates (18–20 spm), each stroke must produce more power to maintain the same split. This means:

A 2:05 at rate 18 requires more force per stroke than a 2:05 at rate 24
The cardiovascular demand may be similar, but the muscular demand differs
Training at lower rates develops leg drive and body swing

For steady-state, rate 18–22 is standard. For threshold and above, rate 26–32 is typical. See UT2 vs UT1 vs Threshold for more detail.

Weight adjustment

Heavier rowers generally produce faster splits at the same fitness level because the erg doesn't account for body weight. To compare fairly across body weights, use weight-adjusted pace:

The standard formula adjusts to a reference weight (usually 75kg for men, 61.36kg for women):

Adjusted split = Actual split × (Actual weight / Reference weight) ^ 0.222

The weight adjustment calculator handles this automatically. Enter your split and body weight to see your adjusted score.

How ErgBuddy auto-calculates zones

When you enter a 2K benchmark in ErgBuddy, all six training zones are calculated automatically using the offsets above. If you also enter a 6K or 60-minute benchmark, ErgBuddy cross-references the results to refine your zones.

Every session in your generated programme uses your personal zone splits — no manual lookup needed. When you update a benchmark, all future sessions recalculate.

Use the pace calculator to quickly calculate zones from any benchmark right now.