Pacing a 2k Ergo the Aussie Way

Why the middle 1k decides the score

A 2k sits in physiological no-man's-land. Too long for a clean alactic effort, too short for a pure aerobic test. Sport-science estimates put the mix at 75 percent aerobic, 25 percent anaerobic for trained Aussie rowers, varying with body mass and lactate handling. Pacing rewards patience harshly. Crack the first 500m and lactate stacks faster than the aerobic system can shift it. The wheels come off between the 1200 and 1500 marks. The back half stops being racing and turns into damage control all the way to the line.

The fittest scholar in the SASI tank goes backwards if the pacing is wrong. The lesson coaches at Mosman Rowing Club drill into novice schoolboys is the same one Sam Beltz wrote about in her W2- prep notes: discipline beats bravery on this piece. A controlled opening 500 is the single biggest predictor of whether the second 1k feels like racing or surviving. Pick the right shape. Then keep the discipline when the monitor flashes a number you could "easily" beat by two seconds at the 700m mark.

Four split shapes selectors see

Watch enough piece replays on ErgData or the Concept2 Online Logbook and the same four shapes appear. AGSV / CAS coaches use the splits-per-500 view to clock them inside ten seconds of finish. Three shapes leak time. One bags PBs.

J-pattern wins because it concedes the smallest sliver of efficiency for the biggest mental lift. Bank a couple of seconds early via a tidy punch, then guard the middle 1k against lactate flood, then cash the alactic reserve in the closing 500. Most school programmes work the flat shape for the first two trials of pre-season, then graduate to the J-pattern once an athlete has a 6k benchmark to peg the target off. Coaches at Sydney Rowing Club and the Banks BBC Boat Club follow the same progression. Sam Beltz of W2- fame drilled the same pattern with her Melbourne crews.

Three-phase race plan

A 2k is three pieces of work bolted together, not one unbroken effort. Split it into the punch, the body and the wind-home, and carry a split, a rate and a feel target into each.

Punch (0 to 500m): launch then settle

Open with five hard strokes at rate 42 to 44 to spin the wheel up, then 10 to 15 power strokes at rate 36 to 38 about four seconds quicker than target. By stroke 30 the rate should have dropped to base. For senior men that lands around 32 to 34, senior women 30 to 32, Year 9 and 10 schoolboys and schoolgirls usually 28 to 30 because school programmes race lower rates. Split should read 1 to 2 seconds under target by the 250 marker. Reading 4 seconds under? Going out way too hot. Settle now or pay between 1200 and 1500.

Body (500 to 1500m): do nothing memorable

From the 500 buoy to 1500m the brief is simple. Sit on target split. Sit on base rate. Resist the urge to "feel out" the piece by hammering ten strokes to see if there is more in the tank. There always feels like more at 700m. There almost never is. Around 1000m the discomfort jumps a level because lactate starts bouncing back into the bloodstream. Adrian Cassidy calls this the bury zone in his AIS coaching notes. Right answer: stay locked on the target number. Let the rate carry the boat.

Wind-home (1500 to 2000m): 30 strokes to the line

At 500m to go, lift rate by two beats (typically into the 34 to 36 band for the main push), commit to dragging the split down 1 to 2 seconds, and accept the next 90 seconds will hurt past anything the body got served earlier. At 250m to go, full sprint. Senior men 38 to 42, senior women 36 to 40, drive everything through the foot stretcher, and chase the split as low as it will go. Last 20 strokes will look ugly on video. No one watching the printout cares.

Setting a target you can defend

Race the split you have evidence you can hold. Guessing kills 2ks. State institute coaches like Ross Smith at NSWIS lean heavily on the 6k as the anchor test for the 2k. Most school programmes pull a 6k benchmark every six to eight weeks for the same reason. Four ways to land a target you can argue for in front of the rowing master:

• Project from a longer piece: The honest method. A recent 5k or 6k pumped through the Riegel endurance relation lands a 2k inside two seconds for most trained Aussie rowers. Our 2k projection tool takes the input and spits out the defensible target. NSWIS, VIS and most school programmes lean on this when an athlete has not pulled a 2k in two months.
• Cross-check with training paces: UT2, UT1 and AT splits should sit in known relationships to the 2k. AT work settling 18 to 20 seconds slower than your target? The target holds. AT closer to 25 seconds slower? The target is fiction. Run the maths via the training pace tool, which derives the full five-zone band from a single 2k input.
• Sanity-check the wattage: 1:37.5 is roughly 400 watts. 1:35 is 433 watts. Concept2 pegs watts to split via the canonical 2.80 / (split_seconds / 500)^3 relation. If the target watt figure exceeds anything held for a six-minute interval by 30 percent or more, the target is implausible and the back half will fold. The watts-to-split utility runs both ways.
• Map back from VO2 max: 2k pace correlates strongly with VO2 max in oarsmen. Fred Hagerman established the relationship across elite-standard rowers in the 1970s and 1980s. Our VO2 max tool takes a 2k time and returns a projected VO2 max; run it the other direction as a plausibility check on a target. Browse the wider free ergo toolkit for the rest.

Mind game past the 1k buoy

The 2k turns mental past 1000m. Cardio limits matter. The capacity to keep pulling when the rational brain has packed it in matters more. Five tools that hold up for most Aussie rowers:

1. Chunk the piece: Race four 500s, never a 2k. Reset the countdown each quarter. "One done." "Halfway." "One to go."
2. Pre-script the brutal moments: Decide ahead of time what the inner voice says at 1000, 1500 and 250 to go. "Hold target." "Build now." "Empty it." Pre-written self-talk beats invented self-talk because the thinking brain has already checked out by 1500m.
3. Tunnel onto split, never metres: Stare at the split line on the PM5, not the metres counter. Metres remaining is poison at 1200m. Split is something the body can act on right now.
4. Use a coach call: A coach or training partner calling rate at 1500, 1000, 500 and 250 to go is worth real seconds. Locks the athlete into the piece too because nobody bails with eyes watching.
5. Breathe to the stroke cycle: Two-stroke breathing (in on drive, out on recovery, then in on recovery, out on drive) keeps oxygen flow steady through the back half. Almost every blow-up has a respiratory tell 30 strokes before the split slips.

Where Year 10s lose their first one

Five errors account for nearly every botched 2k at AGSV / CAS / GPS schoolboy and schoolgirl level, plus a fair chunk of the club ones too. Spot them in your own racing and the next test goes better:

• Launching at 1k pace: Most common error of the lot. Adrenaline plus fresh legs spits out a first 500 five to eight seconds quicker than any sensible target. Maths is unforgiving. Every second banked in the punch costs two to three seconds in the back half.
• The 1500m fade: Split holds to 1000m, drifts two to three seconds between 1000 and 1500, then the sprint is impossible because the legs are cooked. Almost always traces back to a positive-split first 1k. Lock the middle and the wind-home returns.
• Late sprint: Saving everything for the closing 250. Maths does not work. Shaving four seconds off the final quarter cannot rescue a back half that drifted six over target. Build from 500 to go, never from 250.
• Rate creep through the body: Athletes leaking split tend to lift rate because it feels productive. Watch base rate at every quarter. Climbed two beats between 750 and 1250? Wheels are about to come off. Back the rate down deliberately.
• Watching metres remaining: "How much left?" is the wrong question past 1000m. "Is the split where I said it would be?" is the right one. First question invites bailing. Second invites the discipline that holds the J-pattern together to the line.

Selection protocols that actually count

If a 2k score has to count for state institute selection, King's Cup shortlisting or Rowing Australia talent identification, the piece needs to be pulled under a published standard. Three governing standards Aussie rowers race against:

• Rowing Australia plus the state institutes: Rowing Australia runs talent identification and squad selection through NSWIS, VIS, QAS, WAIS and SASI. Concept2 2k scores get benchmarked against published age-group and weight-class standards. King's Cup squad shortlisting and senior international representation route through these institutes. A 2k pulled in the school gym does not count toward selection unless it lands under their protocol.
• Australian Indoor Rowing Championships: The AIRC is the headline 2k race on the Aussie calendar. Drag factor sits inside published limits for record verification. AIRC times act as the public comparison benchmark for school programmes and the score athletes reference when chasing state institute attention. Penrith International Regatta Centre often hosts feeder events on the way through.
• British Rowing PT Testing Protocols: Many Aussie coaches reference the British Rowing PT Testing Protocols (November 2022 PDF) as a clean published standard. The document specifies Concept2 RowErg for every fitness piece, sets warm-up protocols, and locks down drag factor expectations. Useful as a default standard for any programme that has not yet committed to its own written rules.

Questions captains ask us

Pulling it together

The 2k rewards pacing discipline ahead of pacing bravery every single time. Aussie rowers who PB consistently, from Year 11 schoolgirls at SCEGGS to King's Cup heavyweights at Sydney Uni Boat Club, set a defensible target off a recent 6k, hold the bury zone, and trust the back-half build. Athletes who explode at 1500m mostly decided at the 250 marker that today felt like a fast day. Set the target via our 2k projection tool, sanity-check the watt figure on the watts-to-split utility, and race the J-pattern.

Coaching a school or club squad? The lever is logging every 2k under one consistent protocol so scores compare honestly across the GPS, APS, AGSV or CAS season and selection calls hold up in front of parents and the rowing master. Row HQ's coach toolkit and member portal handle the recording and ranking, so the test debrief is about pacing shape and pre-scripted self-talk, not chasing dog-eared test sheets. Get started, book a walkthrough, or browse the pricing tiers. The FAQ covers the usual setup questions.