60-Minute Sweet Spot Outdoor Bike Ride: Aerobic Base Builder

Session Overview

This 60-minute outdoor ride targets your aerobic sweet spot — the intensity zone just below threshold where you build enormous fitness per training hour. It’s ideal for mid-week base building and developing the aerobic engine you’ll need for race day. Best completed on a flat-to-rolling road circuit.

What You’ll Need

• Road or triathlon bike in good working order
• Helmet, cycling kit, and gloves
• Two water bottles — one plain water, one electrolyte drink
• Power meter or heart rate monitor (recommended)
• GPS computer or cycling app

Warm-Up (10 minutes)

Roll easy at Zone 1-2 (50-60% FTP or below 130 bpm) for the first 10 minutes. Include 4 x 10-second light accelerations in the final two minutes to open the legs and raise your cadence before the main effort begins. Cadence target: 88-92 rpm throughout the warm-up.

Main Set

The sweet spot sits at 84-97% of your FTP (Zone 3-4 boundary, RPE 6-7/10). You should feel sustained effort — challenging but controlled, able to hold a short conversation in clipped sentences. Maintain cadence at 85-92 rpm throughout.

• 2 x 15 minutes at sweet spot (84-97% FTP / RPE 6-7), 5 minutes easy spinning between efforts
• 1 x 10 minutes at sweet spot — focus on smooth pedal stroke and relaxed upper body

Cool-Down (5 minutes)

Spin easy in Zone 1 (50% FTP or below 110 bpm) for the final 5 minutes. Reduce cadence gradually and focus on relaxed breathing. Take on water and a small carbohydrate snack within 30 minutes of finishing.

Coaching Notes

• If you don’t have a power meter, use RPE 6-7/10: breathing hard but controlled, legs burning mildly
• Common mistake: starting the sweet spot efforts too hard and fading — begin slightly conservative
• Scaling down: reduce to 2 x 12 minutes with the same rest period
• Scaling up: extend each effort to 20 minutes, or add a third 10-minute block at the end
• Take on 30-40g carbohydrate per hour during the main efforts; sip electrolytes in the rest intervals