COURSE PREVIEW · GRAVEL · STEAMBOAT SPRINGS, COLORADO

SBT GRVL Black course preview

The 2027 SBT GRVL Black course is 108.1 mi (173.9 km) and finishes where it starts, with 7,605 ft of climbing. RideMorrow finds 30 distinct climbs and 26 descents; the listed climbs account for 79% of the total ascent, and the rest comes from shorter rollers. The hardest climb by FIETS score starts at 33.6 mi: 0.48 mi at an average 9.3%, peaking at 14.2% over 100 m. The longest is 4.95 mi, starting at 24.7 mi. The second quarter holds the most climbing (31%).

Get your free ride briefing Official course

CourseClimbsStart

Distance: 108.1 mi173.9 km
Elevation gain: 7,605 ft2,318 m
Climbs: 3026 descents
Steepest 100 m: 14.2%On a listed climb
Corners: 20334 technical
High point: 8,234 ftLow 6,402 ft

Elevation profile

Shaded: every listed climb. Numbered: the hardest.

First quarter2,301 ft0 mi–27 mi

Second quarter2,322 ft27 mi–54 mi

Third quarter1,530 ft54 mi–81 mi

Final quarter1,451 ft81 mi–108 mi

The 5 hardest climbs

Ranked by FIETS score

1
Climb 15 · from 33.6 mi0.48 mi · 235 ft up · 9.3% average, 14.2% steepest
0.7
2
Climb 19 · from 48.6 mi4.06 mi · 644 ft up · 3.0% average, 7.6% steepest
0.6
3
Climb 30 · from 94.1 mi2.00 mi · 455 ft up · 4.3% average, 9.0% steepest
0.6
4
Climb 17 · from 37.9 mi0.88 mi · 276 ft up · 5.9% average, 10.6% steepest
0.5
5
Climb 28 · from 91.5 mi0.86 mi · 280 ft up · 6.1% average, 10.4% steepest
0.5

Every climb, in ride order

30 climbs · top 5 highlighted

Climb	Starts at	Length	Elevation gain	Avg grade	Steepest 100 m	FIETS
1	1.3 mi	0.57 mi	88 ft	2.9%	9.6%	0.1
2	7.3 mi	3.45 mi	433 ft	2.4%	5.6%	0.3
3	10.9 mi	1.01 mi	181 ft	3.4%	5.3%	0.2
4	14.9 mi	0.71 mi	140 ft	3.7%	6.7%	0.2
5	16.7 mi	0.40 mi	117 ft	5.5%	10.2%	0.2
6	17.8 mi	0.61 mi	75 ft	2.3%	4.7%	0.1
7	19.0 mi	1.16 mi	177 ft	2.9%	8.1%	0.2
8	20.6 mi	0.52 mi	75 ft	2.7%	5.1%	0.1
9	21.6 mi	0.48 mi	97 ft	3.8%	9.2%	0.1
10	23.8 mi	0.32 mi	104 ft	6.1%	8.7%	0.2
11	24.7 mi	4.95 mi	614 ft	2.4%	6.9%	0.4
12	29.8 mi	0.89 mi	146 ft	3.1%	8.2%	0.1
13	31.3 mi	0.89 mi	186 ft	3.9%	13.0%	0.2
14	32.3 mi	0.34 mi	114 ft	6.3%	10.7%	0.2
15	33.6 mi	0.48 mi	235 ft	9.3%	14.2%	0.7
16	37.4 mi	0.38 mi	115 ft	5.7%	11.7%	0.2
17	37.9 mi	0.88 mi	276 ft	5.9%	10.6%	0.5
18	40.6 mi	0.21 mi	88 ft	8.2%	12.8%	0.2
19	48.6 mi	4.06 mi	644 ft	3.0%	7.6%	0.6
20	64.1 mi	0.70 mi	123 ft	3.3%	6.2%	0.1
21	65.0 mi	0.58 mi	97 ft	3.2%	4.9%	0.1
22	66.3 mi	3.31 mi	418 ft	2.4%	7.0%	0.3
23	69.9 mi	0.52 mi	90 ft	3.3%	5.3%	0.1
24	70.6 mi	0.51 mi	102 ft	3.8%	7.0%	0.1
25	71.4 mi	1.19 mi	203 ft	3.2%	7.4%	0.2
26	79.8 mi	0.57 mi	193 ft	6.5%	9.8%	0.4
27	90.9 mi	0.43 mi	72 ft	3.2%	8.9%	0.1
28	91.5 mi	0.86 mi	280 ft	6.1%	10.4%	0.5
29	92.7 mi	0.65 mi	69 ft	2.0%	5.6%	0.0
30	94.1 mi	2.00 mi	455 ft	4.3%	9.0%	0.6

Descents

26 descents drop 5,833 ft in total. The steepest:

Descent 8 · from 38.8 mi 1.80 mi at 4.0% average, 13.7% at its steepest
Descent 16 · from 72.6 mi 2.02 mi at 3.9% average, 11.9% at its steepest
Descent 10 · from 42.5 mi 0.93 mi at 4.2% average, 11.4% at its steepest
Descent 4 · from 32.7 mi 0.76 mi at 7.3% average, 11.3% at its steepest
Descent 14 · from 52.6 mi 3.50 mi at 3.9% average, 10.9% at its steepest

Corners

203 corners detected from the course geometry, 45 of them on a descent.

3 Very technical
31 Technical
70 Moderate
99 Gentle

Technical corners on descents

12.8 mi 35° left bend on a 9.2% approach · Technical
15.9 mi 45° right bend on a 8.0% approach · Technical
16.0 mi 39° left bend on a 7.3% approach · Technical
16.3 mi 31° right bend on a 9.2% approach · Technical
16.4 mi 30° left bend on a 9.9% approach · Technical
22.9 mi 36° left bend on a 3.9% approach · Technical

Corners describe the line on the map, not road conditions. Sightlines, grip and traffic aren't known.

SBT GRVL Black course FAQ

How much climbing is in the SBT GRVL Black?

7,605 ft (2,318 m) over 108.1 mi, measured from the organizer's course file with the elevation smoothed and small fluctuations ignored. Other tools may show a different total because they count every small rise.

How many climbs does the SBT GRVL Black have?

30 climbs of at least 300 m with 20 m of elevation change and a 2% average grade, plus shorter rollers. Together the listed climbs gain 6,007 ft.

What is the hardest climb in the SBT GRVL Black?

Climb 15, starting at 33.6 mi: 0.48 mi gaining 235 ft at an average 9.3%. Its FIETS score is 0.7.

What is the longest climb in the SBT GRVL Black?

Climb 11, 4.95 mi from 24.7 mi, averaging 2.4%.

How steep does the SBT GRVL Black get?

The steepest 100 m on a listed climb averages 14.2%. Grades are measured over 100 m, so short ramps can be steeper.

Where does this course data come from?

From the course SBT GRVL publishes on its official site (https://sbtgrvl.com/the-race), retrieved 2026-10-12. Organizers change courses, so check their site before the event.

Source and method

Course: Black Race Course | SBT GRVL® p/b Wahoo 2027, published by SBT GRVL. Retrieved 2026-10-12. RideMorrow is not affiliated with the event. Organizers change courses, so check the official site before the event.

Elevation comes from the route file, resampled every 10 m and smoothed. Climbs and descents need at least 300 m of length, 20 m of elevation change and a 2% average grade. Grades are measured over 100 m. Climbs are ranked by FIETS score: height² ÷ (length × 10), both in metres, without the index's high-altitude bonus. A score of 1 is a solid climb; 5 and above is a mountain pass. Weather, surface conditions, traffic and closures are not included.

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