Hi Lozi,
I think there’s a lot of good info from others in this thread but wanted to chime in on a few things.
First off your progression chart shows your threshold power growing from under 150 to around 200 over the course of this year at a steady rate. That definitely shows improvement in your fitness. The more fit you get, the harder you will have to work to raise threshold power. Also since you are on the declining side of the age+fitness curve, gaining and maximizing your fitness is more difficult than other people who may be younger.
You can’t compare your heart rate metrics to anyone else’s heart rate metrics with any real meaning. Heart rate is entirely personal to your individual physiology. Maybe if someone shared your same resting heart rate and same maximum heart rate, had the same body size, mass, age, and fitness level you could possibly look at similarities, but from my understanding everyone’s body is sufficiently different that in general cross-body heart rate comparisons are essentially meaningless. I’m sure Armando or another sports physiologist could provide more info.
Also, regarding FTP / TP comparisons - they are also tough to compare to others when only looking at a single metric. Comparing different people, W/kg is a better metric to use, and your estimate @ 190W / 67kg = 2.8W/kg which is nothing to shake a stick at. Could a 25-year-old who spends 3 days a week doing squats at the gym but doesn’t ride a bike beat that? Maybe, but again comparisons don’t matter unless they’re apples-to-apples. So much of cycling and training is about self-improvement. It can be fun to compare to others, but just looking at some fitness numbers strips out so many variables that tell the real story - like you having biked every day contiguously for 1.5 years - seriously impressive!
I looked at the ride data you posted, and aside from the breakthrough attempt and a couple intervals, most of the riding shown is ~50% threshold power, with very few MPA drawdowns which puts it in the low intensity / cardio category. That should be around your lower threshold power, AKA your long-slow-distance power that you can sustain all day. I don’t know if these are representative of typical training rides, but I think if you want to be increasing your threshold power more, you need to be doing more like 80% TP with some intervals at or above TP. If TP increase is your goal, then maybe you should try one of the goal-oriented programs: e.g.
Maybe a more defined workout plan with some shorter iterations and metric-based goals will help you mentally feel like you are progressing more.
I’m a similar age, weight, and fitness as you, and also prefer a more structured schedule of training. I understand the importance of maintaining the schedule for fear of skipping a day leading to a cascade of falling off the cliff. I do however wonder if you are getting enough rest and recovery or have overtrained, and are getting enough fuel during longer rides as was mentioned before. You don’t have to skip a day riding, but make sure your “rest” day really is an easy ride and don’t push it. Like heart rate zone 1 / lower zone 2. When I toggle the altitude on in your ride data, it kind of looks like you’re bonking partway up climbs. You have a nice spike of TP+ power at the start, and then drop down to ~50% TP for the remainder on a lot of hills. That looks like you’re at your limit and not fresh. Make sure you’re getting enough calories on your multi-hour rides and enough recovery time between big rides or workouts. The power drop-off mid-climb could be for any number of reasons, including something not directly related to training, but maybe something above will help you find an area to improve.
Overall you’ve been steadily growing your fitness, which is more than a lot of people can say including myself this year.
Hopefully someone else will correct me if I’ve said anything less than factual above.