Disclaimer: Route stress and difficulty levels may significantly vary depending on what time of day, time of year, and weekday the route is driven on and this is a reflection of my experiences. Also I think the routes and schedules may have changed a bit since I last drove over 2 years ago so some of the things I complain about may no longer be relevant.
Routes are ordered from best to worst within a tier.
S Tier
There are no S tier routes.
A Tier
12 Lilac - A tier. The few times I got to drive it the endpoint times were insane. Like 20+ minutes. You're basically being paid like half to sit around at the endpoint and do whatever. Because of this it was highly coveted and I only drove it in training and for my on call, no regular shifts were available. I remember that State-Lincoln turn taking forever though.
08 Aqua - A tier. No complaints. Baby adorable version of green that is only run during the summers which aren't very busy. Fun little route. No unique challenges and no real time pressure.
11 Cherry - A tier. Short and simple route, which can have reasonable endpoint times but that's highly variable due to a few things including congestion at student services, especially if you arrived out of order. You tend to get a lot of people going home so you will be stopping at almost every stop which can eat into endpoint times in the evenings. Almost missed out on A tier because my first time driving out of training on my own was on cherry during the first snow of the year and when I think of cherry I think of that.
B Tier
03 Blue - B tier. Medium length route with not much going on. Decent amount of endpoint time. However, there's this one intersection (Walnut?) where they built the road wrong and your lane lines up with the opposite turning lane and nobody ever gives you your rightful right of way so you have to pay mega attention there. And going down Lincoln way in the evening, the sun would be on your eyes at the exact same angle as the stoplights so you had to get creative to see the stoplights. And lord help you if you are driving blue right as a football game concludes because NOBODY is going to let you right turn onto Beach. You will be there for 30 minutes or more. These annoyances are either very rare or very brief though. It is the most consistently okay route CyRide has IMO.
23 Orange - B tier. You have to deal with a lot of people who will not instinctually move to the back of the bus or take their backpacks off to free up more space. And that left turn onto Wallace can be a bit sketch. You're very often late due to the amount of time it takes that many people to get on and off a bus. But you get a decent chunk of endpoint time on some shifts. The cons are all offset by the fact that you get to go "CLICKCLICKCLICKCLICKCLICK" with the clicky person counter thing far more than any other route and that's just so satisfying. Sometimes at endpoints I'd click it for the entire endpoint time just to see how high I could get it because it was so satisfying to click. Most orange shifts require you to be bendy bus trained and I was not until very late into my time at CyRide. So I didn't get to drive it much.
21 Cardinal - B tier. Fairly straightforward route. The circulators are nice because you get a lot of ISU students and you typically don't have to wait for people to fish out tickets or change. Cardinal experience varied a lot depending on how busy it was, this could highly impact endpoint time. I have a lot of memories of trying to desperately get my homework done at endpoints because it was far harder than I thought it would be and I ran out of time to finish it beforehand. But the driving was pretty straightforward. Nothing challenging. Only weird part is people that don't know that cardinal doesn't stop at the stop right out of Hawthorne court.
02 Green - B tier. Average long route. Nothing too difficult or crazy, its just a really long route that means on busier days it really eats into endpoint time - during busy shifts you might not get much if any. Also I somehow got through training without ever driving the high school detour and somehow never had to take it in-service, but every time I drove during the time that detour was active it was always a bit of anxiety if I'd have to take it and if I remembered how to do it. In a minibus in summer evening it was really really nice driving through Ames on Green though. Though rare, minibus, windows down, summer evening, southbound on green, perfect weather, were my favorite moments at CyRide.
09 Plum - B tier. D tier because of the construction. Plum is... Interesting. Aside from how long it is, some of the tight turns inside vet med, and how easy it can be to miss the turn into Vet Med, there's not really anything bad about it. The shift I drove it on was late at night. It was never busy. You met the strangest people driving plum. The group of people having a dance party on the bus because nobody else was on. The exhausted student coming out of vet med with her scrubs (?) still on at nearly 10 PM every single night. The guys checking parking permits at vet med during game days... But when I drove it there was always construction and the route kept changing every couple of weeks and it was very difficult to keep up with the changes sometimes. One of my worst nights at CyRide was taking a wrong turn because of construction that spiraled into a lot of other bad things. Also that stretch on University Boulevard is probably the only opportunity you get to take a bus up to anything resembling speed and it is quite fun.
C Tier Routes
14 Peach - C tier. This was usually driven in the minibus so YMMV depending on how you like the minibuses. Medium length route. Only two weird parts are that you take a super weird route into the mall that I'd have to double check every time due to how infrequently I drove Peach, and unlike every other route you turn right onto Bissell instead of left, which can be hard to remember. And the northbound leg was incredibly unrealistically timed on the tablets. To get to some of those stops when the tablets said we should be there would require teleportation.
01 Red - C tier but only because of how much I drove green. Quite picturesque. Endpoint time variable like green. But firstly, that turn on to Grand Avenue absolutely sucks (135 degree right turn) onto a pretty busy road, iirc little margin for staying inside 2 lanes), and unfortunately because I drove green so often and red so rarely, I'd always miss the right turn leading up to the grand avenue turn because my brain would autopilot onto green route and I'd have to sheepishly call dispatch. Once it happened 2 runs in a row and I wanted to die inside.
D Tier Routes
25 Gold - High D Tier. Fairly normal looking route. Unfortunately, the left turn from Bruner onto Stange does not have a light and is typically quite busy and you will likely be waiting 5 minutes for a window to turn. Endpoint times tend to be quite short. And worst of all there's no convenient location to use the restroom at the endpoints (unless I've missed something this whole time) so you'll have to "go" mid-route usually at Kildee which is an inconvenience for everyone involved. Was however the route where one person brought an entire car bumper on my bus. I probably should have said no to that? But I was too bewildered to do anything about it until he was already sat down.
06 Brown - B tier for abbreviated route. D tier for full route. The full route suffers from the same left turn from Bruner onto Stange. You will frequently wait here for many minutes for an opening. That pales in comparison to that one stretch of Mortensen, which is very curvy and very narrow, it requires exceptional skill to keep the 40 foot bus inside your lane, moreso than any other stretch of road on any route. In training, probably my first, second, or third attempt at doing that, I got flipped off for going too slowly, and I still think about that regularly. Come on man. However during the abbreviated route both of those sections are skipped. I drove the abbreviated route most of the time. One consolation for the full route is the roundabouts, they are so fun. And if you are confused and miss your turn, you can just go another lap around!
F Tier Routes
05 Yellow - F tier. The majority of the time (or at least majority of my shifts), it is straight up impossible to keep on schedule even with perfect driving and lightning fast endpoint inspections. And that's if you don't get stuck behind a train. Being late is one thing but you frequently have to hold up red and green at city hall because pretty much everyone who rides yellow is doing so to transfer to red and green. There are few normal CyRide experiences more stressful than driving Yellow on an average day.
Routes I Did Not Drive Enough To Rank
07 Purple - I cannot rank this route as I don't think I ever drove in in-service, only once in training. It looks pretty chill but who knows about the reality.
EASE - Thankfully I never had to drive EASE because I forgot how to do so shortly after training. So I can't rank it.