Training for the C.R.A.S.H.-B. Sprints
How to structure a 12-week build toward a 2k PR at the world indoor championships.
The C.R.A.S.H.-B. Sprints happen every February in Boston and draw the fastest indoor rowers in the world. Whether you are chasing a world record or just a personal best, the event rewards the athlete who arrives in peak form — sharp, rested, and confident.
The 12-Week Structure
A solid C.R.A.S.H.-B. block breaks into three four-week phases.
Weeks 1–4: Base. Long, steady-state pieces at UT2 intensity (roughly 70–75% of max HR). A typical week looks like three 45–60 minute rows, one session of short intervals (8x500m at 2k pace +10 seconds), and one day of cross-training. The goal is aerobic volume without accumulating fatigue.
Weeks 5–8: Threshold development. The biggest training load of the block. Move the long pieces to UT1 (75–85% max HR) and introduce lactate-threshold work: 4x8 minutes or 3x10 minutes at a pace you can sustain for about 30 minutes flat-out. This is where the real fitness is built.
Weeks 9–12: Race prep and taper. Reduce volume by 30–40% but keep intensity. Add race-pace pieces: 4x500m at 2k pace with full recovery, then a solo time trial the week before the event to dial in pacing strategy.
Pacing the 2k
Most athletes go out 2–3 seconds faster on the split than their average pace on the first 500, negative-split the second and third 500s, then empty the tank in the final 500m. The monitor is your pace line — trust it more than how you feel in the first minute, because it will lie to you.
Recovery and Readiness
Training load only becomes fitness when you recover from it. Sleep 8+ hours during the threshold phase. Track your daily readiness score (HRV trend, resting HR, subjective feel) and reduce intensity on low-readiness days. A missed hard session costs little; training through fatigue costs weeks.
Race Day
Warm up 20–25 minutes before the start — light paddling, three or four short accelerations to race pace, then a 10-minute rest. Arrive at the erg dry and calm. The erg will tell you exactly what shape you are in.
Good luck at the C.R.A.S.H.-B. Sprints.