Left reasonably early so I was able to take the highway north to Fairburn and had no issues. I saw very few cars on the back roads north from Fairburn and Camp Creek parkway was pretty sparse too. It was good enough that I decided to stay on it for another mile or so rather than go ahead and jump on the parallel road I had planned. At one point I was climbing the hill from the river and saw taillights ahead and thought the car was in the shoulder where I was riding. But as I approached it became clear that the car was dead stopped in the right lane with cars buzzing by at 50-65mph. Just an accident waiting to happen. And there was a curve right before it came up so if you were driving fast you wouldn't notice till the last second. I decided to try out my new gloves that have electronic warming in them since I figured it would be in the mid thirties by the time sunrise came around and I would be out in it for several hours. My hands sometimes have trouble keeping warm at very low intensities for hours at a time. Turns out they were overkill and my fingers were sweating inside, but occationally I turned on the power and I was plenty warm. I do wish I had brought my normal lighter full finger gloves as well because with the electronic ones I wasn't able to do anything that required dexterity. They are pretty bulky and stiff. In Cobb county I rode a large subdivision not too far from the river that was super hilly. Just one big hill after another, super steep. This would be the theme of the day. Lots of dead end roads that required a lot of braking and a crazy steep climb up and out. I had a bit of trouble with my gloves managing exactly what lay ahead of me by interacting with my garmin, but I managed. I crossed the river for the second time and it was still early enough that this was pretty simple and safe. It looks like they're currently working on extending the path to the Silver Comet along this corridor and there was evidence of recent work. There already is a separated path on the bridge and into Atlanta but the Cobb side is lacking. Crazy that it STILL isn't connected after all these years. I think it was completed in 2008 or so. Amazing. And of course the Beltline is nowhere near connected either. I made my way through densely forested neighborhoods in Atlanta up and back over the river again to my first stop of the day at a Kroger. I was really in need of a pick me up and was glad to see it. It was persistently cold so I was reluctant to strip down yet but I had only the heavy gloves so I went ahead and took them off and this ended up being a good decision because it warmed up pretty fast by this point and I stripped everything else off soon after. After the store I rode down a quiet shaded road that dead ended next to another dead end road, with an unofficial but well trodden path in between. The road up and out led between tall apartment towers, and was nearly 20% at the junction with the other connecting road network. This would be the theme of the day, super steep roads. I made my way north entirely on path over I-75 and 285 to Sope Creek. I made a boo boo and looked at the hiker direction and so went the opposite way for the first loop. But thankfully I didn't see hardly anyone and I moved over as I always do(especially if i'm on a long endurance ride). For the second loop(they join in a figure 8 kind of) I made sure to go the correct way. This didn't take all that long and soon again I was back to doing crazy steep cul de sacs in the woods amongst the mansions. The Sandy Springs roads were even more extreme than the ones earlier in the ride. More opulent displays of wealth, steeper hillsides, constant rolling hills, no flat at all. No place to really rest at all because the descents required full attention and lots of braking. I had to stop to adjust my front brake twice on this ride because my lever was almost to the bar(I have mechanical disc brakes that don't self adjust like hydraulic and usually they go several rides before I have to do this) Despite the short distance between planned store stops I was famished and nearly out of water by the time 129 miles came up and I emerged from the woods to cross 285 and stop at a CVS. I had planned to go over to the nearby Publix but I decided not to bother, as it would have been a pain to get to from where I was and in any case the CVS was faster if way more expensive. I had a serious need to use a restroom after buying a ludicrous amount of food and water so I couldn't sit and enjoy a little break in the nicely shaded parking lot as I had wanted to so I pushed off and got going again. I decided to try to make this my last stop despite their being 75 more miles to go due to no good options along the planned route save gas stations(hate those). AS I happens I climbed the hill up to my next turn and there was a construction ongoing with the intersection and so there was a porta potty there which I took full advantage of. While I was in there a car pulled up next to it despite the road being blocked and closed. I thought he was wanting to use the porta potty but after half a second decided that was pretty ridicious and more likely he was just making a U turn or checking out to see if he could get through the barriers. The car left after a few seconds. Almost as soon as I emerged though a cyclist came walking up from the road I was about to head down and was just checking on the construction progress. We exchanged pleasantries and I asked about the road he had just come down and he said it was all good. So I went around the barriers and continued on south. I began to get really tired of all the hills but especially the cul de sacs that ended in a 10% grade. Thankfully they were much more infrequent and I was actually able to ride down hills coasting the whole way down several times. Of course on a route with so many intersections many hills were interrupted by stop signs which was also frustrating. At length I approached Atlanta proper and definitely felt anxious as I am out of my element as a mostly rural rider. But of course it was no big deal and anyway I routed myself mostly on extremely quiet streets. I wound my way south through the rest of Atlanta and on into East Point, and the sun went further and further down. By the time I went by the airport it was down below the trees and I went ahead and put my arm warmers on again as the day cooled off quickly. Riverdale road from the airport road area was deserted and anyway I had a bike lane too so this part was very nice. The next miles took me through a bunch of quiet neighborhood roads in Clayton and South Fulton, and this wasn't a problem at all. Next worry though was getting to Westbridge road which involved taking two rights on super busy big highways and then taking a left on Westbridge. The sun had gone down and it was fully dark by this point. I opted to just wait on the shoulder for a big gap and then cross straight to Westbridge and this wasn't a problem. There was a bit more traffic that i'd have preferred but I didn't have to stay on very long as the safety of Wagonwheel road came pretty soon and I was on Fayette county gravel. Then I had to worry again about the long right then left off highway 92 to Jewel Bluff but I did this easily by using the same approach. I pulled off into the opposing driveway and simply waited for there to be a good gap to cross. And with that I was done with the traffic for the night. I was a bit short on miles for my necessary 205 so I took the long way through the hilly northeast side of PTC and picked up yet more elevation gain. My garmin said 20000 by the end and I think for sure it definitely has a bit of trouble accurately gauging change when lots of dead end roads are included but I must say based on how hilly I felt it was I for sure feel like I did that much climbing. Definitely a completely ridiculous route and way harder than I figured it would be.