The differences between TT courses for broadly the same power!
D25/8e – only 330ft of ascent but feels like more. 5 roundabouts to navigate, mostly single carriageway (SC) but some dual carriageway (DC). Quite exposed so susceptible to even lightish winds. This one felt really hard (day after the one below – legs tired).
J5/8 – 560ft of ascent but recognised as a “fast” course if the weather is right. 7 roundabouts to navigate but virtually all DC. My stats suggest I could have put more in but felt like I’d emptied it in the final 2 miles up the “concrete mountain”.
L2524 – 292ft of ascent. 5 roundabouts to navigate and mainly DC. Apparently weather dependant but felt like a fast course when I was there.