Red Mist on 300s

A 3000m threshold grind — 6×300 just over CSS on 25s rest, a shorter Red Mist. 2800 m, about 49 minutes. Free to print or export to Garmin.

Red Mist on 300s — The Busy-Day Grind. A 3000m threshold grind — 6×300 just over CSS on 25s rest, a shorter Red Mist. Focus: threshold. Pool: 25 m. Total: 2800 m. About 49 minutes. Blocks: 300m Progressive 300 m zone: GA1. 200m Pull 200 m zone: GA2. 4 rounds of: 50m Build 50 m zone: GA2. Rest 60 s. 6 rounds of: 300m Red Mist 300 m zone: GA2. 300m Cooldown 300 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.