Lactate buildup and muscle soreness

Hey Mike,

Thanks for the feedback. I started TR in October 2024 and chose the “Getting Faster for GRP Ride High Volume” plan. I’m on the specialty phase of the block. So far, the training has gone well. I have gained a 4-watt increase, which I am happy with considering I’m an older rider.

The first week of the training block consisted of:

  • Tuesday: Anaerobic 3.5 Wren, 90-minute session
  • Wednesday: Endurance 2.6 Manly, 30-minute session
  • Thursday: VO2 Max 4.3 Taylor+1, 90-minute session
  • Friday: Volunteer 2.1, 30-minute session

During the weekend, I did a hard group ride but got dropped; my legs felt heavy.

Now, the second week of training followed the same pattern. I did the Tuesday Anaerobic session, but on Wednesday’s 30-minute endurance session, I mentally struggled to get through it. I scored the RPE 8; it just felt hard. So I ask, was this because of lactate build-up or just muscle soreness that the session felt hard ?