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2,582 ft
Distance
6 ft
Climb
-225 ft
Descent
00:02:42
Avg time
-221 ft
Altitude change
184 ft
Altitude min
406 ft
Altitude max
406 ft
Altitude start
184 ft
Altitude end
-8.6%
Grade
-24.9%
Grade max
5.9%
Grade min
184 ft
Distance climb
1,857 ft
Distance down
469 ft
Distance flat
00:02:42
Avg time
Dia Details
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Activities
- Mountain Bike
- Hike
- Trail Running
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Riding AreaSan Onofre
San Clemente, California -
Difficulty Rating
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Voted DifficultyBlack Diamond (4 votes)
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Local Popularity60 in Mountain Biking [+]
- 5 in Trail Running
- 70 in Hiking
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Global Ranking
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Hiking SAC ScaleT2 Mountain Hiking
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Trail TypeSingletrack
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Bike TypeDH, DJ
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DirectionDownhill OnlyPopular Direction Shown
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Physical RatingModerate
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Dogs AllowedYes
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Land OwnerSHARE Mountain Bike Club
Dia is the extension of Frank and Beanz and a different option than Bronco. It is a jump run with ride arounds for almost everything which makes this a blue run. It is always changing so you need to keep a sharp eye out, but the majority of the run is pretty consistent.
Local Trail Association
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Please consider joining or donating to the local trail association to supportDonate to earn trail karma!
trail development & maintenance.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 34 rides
- 13 miles avg distance
All
- 448 rides
- Last: Jun 22, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Dia Trail Reports
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Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Partial
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
Trail Flow (Ridden Direction)
Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Ridden
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- < 2 days
- < 1 week
- < 2 weeks
- < 1 month
- < 6 months
- > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
- Downhill Only
- Downhill Primary
- Both Directions
- Uphill Primary
- Uphill Only
- One Direction
Contribute Details
Colors indicate trail is missing specified detail.
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- Photos
- Description & Photos
- Videos
Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months.
Trails are compared with nearby trails in the same city region with a possible 25 colour shades.
Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
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- popular
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Max Vehicle Width
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US Cell Coverage
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Radar Time
Activity Recordings
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Options
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Date range
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Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status
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Slope Aspect
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Directions to dia trailhead
(33.436730, -117.579360)
Routes with this trail
★ 2.3 • 7 miles • 1,132 ft • 19 •
This is a multi-loop route, focusing on Hi'er Line and Dia. Start by riding Hi'er line, then continue...
3 Reviews & Comments
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Nearby Trails
- Bronco 561 ft
- Cobra Kai 614 ft
- Connector 705 ft
- Bad Influence 797 ft
- Flagpole Connector 922 ft
- By MTBMOR & contributors
- #260807 - 2,801 views
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Frequently Asked Questions About Dia
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Where is Dia located?
Dia is located in San Onofre, San Clemente, California, United States. It is part of the San Onofre trail network. The trailhead is located at coordinates 33.43673, -117.57936.
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How hard is Dia?
Dia is rated as Blue difficulty. The physical rating is Moderate. The average grade is 8.6%.
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What is the elevation gain for Dia?
Dia has 2 m of elevation gain. The trail has 69 m of elevation descent. The elevation ranges from 56 m to 124 m.
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Is Dia a point to point trail?
Yes, Dia is a point to point trail. The direction is Downhill Only. The trail type is singletrack.
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