19.1 miles
2,850 ft
-2,868 ft
2 miles
High Point

This is my absolute favorite ride from Park City Mountain Resort. It is not an epic ride or a lunch ride, it is that perfect Saturday morning rip or weekday afterwork ride.

It starts using the uphill only Armstrong trail, which is mostly pretty easy, but has a few rocky sections to clean and gives you a bit of technical warm-up. The uses what I think is some of the best Mid Mountain section of trail, fast and flowing if you keep on the gas through the pine trees. From there you go down the best part of CMG.

Oddly enough, this part of CMG is bi-directional, but is way better than the dedicated downhill section. If you continue down the slow flow to the resort, you will get into traffic and it is not that great. So at the Jenni's intersection continue right and start the slow but smooth spin back up to Mid Mountain. Here you will traverse back the same way you came. There is an intersection deep in the trees where you turn down Spiro for the final ripping downhill.

Detailed Description
PCMR Ultim8 is a 19 mile popular intermediate route located near Park City Utah. This mountain bike only route can be used one direction. This route includes 6 trails. This route climbs 2,850 ft with a max elevation of 8,410 ft then descends -2,868 ft.
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11 Reviews & Comments

  • + 0
maelon (Sep 13, 2022 at 4:40)
Trail Spiro
Connects Mid Mountain to bottom of Silver Star restaurant, rest rooms. Good exit point to end ride from Silver Lake Lodge via Mid Mountain trail.
  • - 1
atfarley (Jun 17, 2021 at 11:29)
Trail Spiro
I have no clue how it has four stars. It just really isn't that good.
  • - 3
Deez54 (Apr 28, 2021 at 9:38)
Trail Spiro
Better than Pinecone. Can't change my mind.
  • - 1
ERM1234 (Sep 13, 2020 at 20:57)
Trail Spiro
Absolutely beautiful. Beyond that very rough top to bottom.
  • + 0
NoGr1018 (Jun 1, 2020 at 14:10)
Trail Mid Mountain
As of today, there were 7 dead aspens blocking the trail going east towards CMG. none of them were rideable, so had to shoulder the bike and climb over. Hoping someone with more lumberjack experience than I do can get out there soon and remove them.
  • + 4
hi-dr-nick Reporter (Sep 23, 2019 at 20:20)
Trail Spiro
You can technically go up it, but just don’t. Nobody does except lost people on rental bikes. Armstrong is uphill only and goes to the same area.
  • + 1
doaway (Sep 6, 2018 at 8:13)
Too many roots and corners, could not enjoy the ride. Not recommended to ride both ways.
  • + 1
jharris7334 (Sep 2, 2018 at 19:59)
Trail Spiro
I know this trail is very popular, but I did it a couple of days ago and it was not very fun. It was a serious washboard. Even the berms. Kind of disappointed. Hopefully it gets some TLC.
  • + 0
skoch (Jul 6, 2018 at 9:11)
Trail Mid Mountain
Do g
  • + 2
thesquid (Sep 2, 2017 at 23:53)
Trail Spiro
It's one the classic Park City trails, everyone's ridden it. But for a 1500 foot descent it's pretty boring. Buff, straight, not much in the way of natural or man made features or flow. You're still going to end up on it.
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Trails in Route

Silver Spur3,199 ft
Mid Mountain2 miles
Jenni's (Upper)3 miles
Mid Mountain2 miles
Mid Mountain5,046 ft
Spiro3 miles


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  • Primary Activity
    Mountain Bike
  • Difficulty rating
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  • Direction
    One Direction
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More Stats for PCMR Ultim8 mountain bike route
  • Altitude min
    6,899 ft
  • Altitude start
    6,917 ft
  • Altitude end
    6,900 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    9 miles
  • Distance down
    9 miles
  • Distance flat
    4,951 ft
Avg: 3 (4 votes)
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Trail transparency
Keystone // Powerlines // Spiro 4K POV Park...
Keystone // Powerlines // Spiro 4K POV Park City, Utah
trail: Spiro
25:23 | 80 | comments: 0 | favs:
Aug 21, 2022

Recent Trail Reports Along Route

Oct 19, 2022 @ 2:26am
Oct 19, 2022
Dry and fast, but brake rutted due to a summers use. Still great fun
Mid Mountain
Oct 19, 2022 @ 2:19am
Oct 19, 2022
Mid Mountain
Oct 19, 2022 @ 2:19am
Oct 19, 2022
Silver Spur
Oct 10, 2022 @ 3:18pm
Oct 10, 2022
Jenni's (Upper)
Oct 9, 2022 @ 1:57am
Oct 9, 2022
more reports »
  • By todd Trailforks & contributors
  • #16294 - 3,278 views