The overall region status for Grindstone is Open as of Jul 30, 2026 ago
Trail Conditions Summary
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Grindstone Weather Forecast 
- Sat 19
55 °F - 75 °F - Sun 20
55 °F - 73 °F - Mon 21
54 °F - 73 °F
| trail | date | description | condition | ||
|---|---|---|---|---|---|
Jul 30, 2026 @ 11:51am (America/Denver) Jul 30, 2026 | trailrun | Unknown | view | ||
Jul 13, 2026 @ 9:15am (America/Denver) Jul 13, 2026 | hike Great trail, smooth hero dirt in many areas, mix with some rocky switchbacks and a few chiselly sections. Solid blue but could walk around any areas that are too technical. | Dry | view | ||
May 24, 2026 @ 8:20am (America/Denver) May 24, 2026 | mtb NOT a green run. It is relatively flat, but there are sections of this that are technical enough to be absolutely prohibitive to average XC riders. This has to be the hardest, most technical green rated run on earth. 05-23-2026, even without the major erosion, there are sections of this trail that are firmly in "challening blue run" territory as designed. This is misrated. | Variable | view | ||
Apr 4, 2026 @ 2:35pm (America/Denver) Apr 4, 2026 | mtb A good few fallen trees after the first switchback or two, looks like the trail hasn't been ridden much recently but it's beginning of April so to be expected, for that was in good shape and very enjoyable | Ideal | view | ||
Apr 4, 2026 @ 2:35pm (America/Denver) Apr 4, 2026 | mtb | Ideal | view | ||
Apr 4, 2026 @ 2:35pm (America/Denver) Apr 4, 2026 | mtb | Ideal | view | ||
Mar 22, 2026 @ 8:40pm (America/Denver) Mar 22, 2026 | mtb Arrived today to ride, sign said trail closed. We rode from Lancelot Court instead. | Unknown | view | ||
Oct 8, 2025 @ 12:53pm (America/Denver) Oct 8, 2025 | hike | Ideal | view | ||
Oct 8, 2025 @ 12:53pm (America/Denver) Oct 8, 2025 | hike | Ideal | view | ||
Oct 8, 2025 @ 12:53pm (America/Denver) Oct 8, 2025 | hike | Ideal | view | ||
Sep 14, 2025 @ 9:16pm (America/Denver) Sep 14, 2025 | mtb Down tree in path. | Wet | view | ||
Sep 1, 2025 @ 11:16am Sep 1, 2025 | hike | Ideal | view | ||
Nov 13, 2023 @ 6:30am Nov 13, 2023 | hike | Prevalent Mud | view | ||
Nov 12, 2023 @ 11:58am Nov 12, 2023 | hike | Variable | view | ||
Nov 12, 2023 @ 11:58am Nov 12, 2023 | hike | Prevalent Mud | view | ||
Nov 12, 2023 @ 11:58am Nov 12, 2023 | hike | Prevalent Mud | view | ||
Aug 11, 2023 @ 11:47am Aug 11, 2023 | mtb It’s clear but there’s a lot of thistle right now, so watch those knuckles. | Dry | view | ||
Aug 11, 2023 @ 11:47am Aug 11, 2023 | mtb A little erosion in a couple spots but rideable. | Dry | view | ||
Jul 8, 2023 @ 2:53am Jul 8, 2023 | mtb Some trees down across trail. | Ideal | view | ||
May 1, 2022 @ 9:35am May 1, 2022 | mtb 27 down trees on the trail at north ridge connector downhill. Avoid the north ridge connector. Other areas are very dry and loose but still fun ! | Ideal | view | ||
May 1, 2022 @ 9:35am May 1, 2022 | mtb 27 down trees on the trail at north ridge connector downhill. Avoid the north ridge connector. Other areas are very dry and loose but still fun ! | Dry | view | ||
Mar 26, 2022 @ 2:22pm Mar 26, 2022 | mtb | Dry | view | ||
Mar 26, 2022 @ 2:22pm Mar 26, 2022 | mtb | Dry | view | ||
Mar 26, 2022 @ 2:22pm Mar 26, 2022 | mtb | Ideal | view | ||
Mar 26, 2022 @ 2:21pm Mar 26, 2022 | mtb | Ideal | view | ||
Mar 26, 2022 @ 2:21pm Mar 26, 2022 | mtb Really nice after the snow earlier in the week. | Ideal | view | ||
Mar 26, 2022 @ 2:19pm Mar 26, 2022 | mtb The snow earlier in the week has made it super grippy. At least for the weekend. | Ideal | view | ||
Nov 15, 2021 @ 10:23am Nov 15, 2021 | mtb Tree down | Ideal | view | ||
May 22, 2021 @ 9:50am May 22, 2021 | mtb | Ideal | view | ||
May 22, 2021 @ 9:50am May 22, 2021 | mtb | Ideal | view | ||
May 22, 2021 @ 9:50am May 22, 2021 | mtb | Ideal | view | ||
May 22, 2021 @ 9:50am May 22, 2021 | mtb | Dry | view | ||
May 14, 2021 @ 10:00pm May 14, 2021 | mtb Mud! 14 May 2021. Might be dry by tomorrow. | Prevalent Mud | view | ||
May 14, 2021 @ 9:58pm May 14, 2021 | mtb Don’t ride today. mud from today’s rain made it impassable on wheels. Give it some time to dry | Prevalent Mud | view | ||
Nov 9, 2020 @ 7:30am Nov 9, 2020 | mtb No mud. Trails are perfect. Great traction. A few down trees and branches due to the high winds. | Ideal | view | ||
Nov 9, 2020 @ 7:30am Nov 9, 2020 | mtb No mud. Trails are perfect. Great traction. A few down trees and branches due to the high winds. | Ideal | view | ||
Nov 9, 2020 @ 7:30am Nov 9, 2020 | mtb No mud. Trails are perfect. Great traction. A few down trees and branches due to the high winds. | Ideal | view | ||
Nov 9, 2020 @ 7:30am Nov 9, 2020 | mtb No mud. Trails are perfect. Great traction. A few down trees and branches due to the high winds. | Ideal | view | ||
Nov 9, 2020 @ 7:30am Nov 9, 2020 | mtb No mud. Trails are perfect. Great traction. A few down trees and branches due to the high winds. | Ideal | view | ||
Sep 23, 2020 @ 9:37am Sep 23, 2020 | mtb Rode Grindstone Lake loop trails counterclockwise. Many rocky but fun sections. Pollution AQI levels were a little high today (in the 60’s). Temperatures in the mid 70’s. | Dry | view | ||
Sep 5, 2020 @ 9:19am Sep 5, 2020 | mtb | Dry | view | ||
Sep 5, 2020 @ 9:18am Sep 5, 2020 | mtb | Dry | view | ||
Sep 5, 2020 @ 9:17am Sep 5, 2020 | mtb | Dry | view | ||
Aug 8, 2019 @ 6:27am Aug 8, 2019 | mtb | Dry | view | ||
Aug 8, 2019 @ 6:27am Aug 8, 2019 | mtb | Dry | view | ||
Aug 8, 2019 @ 6:27am Aug 8, 2019 | mtb | Dry | view | ||
Aug 8, 2019 @ 6:27am Aug 8, 2019 | mtb | Dry | view | ||
Aug 7, 2019 @ 8:02am Aug 7, 2019 | mtb | Dry | view | ||
Aug 7, 2019 @ 7:55am Aug 7, 2019 | mtb Two Logs down | Wet | view | ||
Jan 7, 2019 @ 1:34pm Jan 7, 2019 | mtb Trail is muddy and covered in snow, where the sun is hitting the trail it is drying out, but majority is a muck. Would recommend riding the trail to prevent significant damage. | Freeze/thaw Cycle | view | ||
Oct 22, 2018 @ 1:04pm Oct 22, 2018 | mtb | Dry | view | ||
Jun 11, 2018 @ 2:16pm Jun 11, 2018 | mtb Last section of my ride, so naturally, the most fun! Super fast and flowy | Dry | view | ||
Jun 11, 2018 @ 2:16pm Jun 11, 2018 | mtb Wrong turn took me here. Good balanced trail, Connects outer loop to inner trail network. Great going both ways but I liked starting north and ending at south. | Dry | view | ||
Jun 11, 2018 @ 2:16pm Jun 11, 2018 | mtb Great dirt conditions. Overgrowth not a problem yet, but on certain sections it gets a little tight. Didn't find any ticks or other bugs on me after ride. | Dry | view | ||
Sep 26, 2015 @ 12:03pm Sep 26, 2015 | mtb | Dry | view |
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