A 1850m CSS / threshold session for race-pace fitness.
Wednesday Threshold 1850m Swim Workout. A 1850m CSS / threshold session for race-pace fitness. Focus: threshold. Pool: 25 m. Total: 1850 m. About 37 minutes. Blocks: 350m Mixed Warmup 350 m zone: GA1. 4x50m Build 50 m rest 20s zone: WA. 11 rounds of: 100m @ Threshold 100 m zone: WA. 200m Easy Cooldown 200 m zone: ReKom. Open this workout in the free builder to customize reps, rest, zones, and export to PDF or Garmin. See every zone with the Swim Interval Calculator. Check pace and splits with the Swim Pace Calculator.