I’m very fortunate in that i have some great streets nearby for Intervals. Both have bike lanes and are wide and low volume. One is a 4-6 % grade that is perfect for 30 and 60 second intervals. Even better if i go early in the morning the side i ascend on has shade!
The other street ranges from a 0 to a 5% grade with an average of 3% with no stop signs until the end. Its just long enough to do a zone 5 interval for six minutes.
I also have a road nearby with a steady 4% climb that takes me about 4 minutes in zone 4. Great for hill repeats.
What i don’t have and need is a gradual steady climb that is 6 miles long for 20 minute FTP tests. The best roads i have for that are mostly uphill but have frequent descents.
I live in Fort Worth TX so i can ride throughout the year with relatively few exceptions.