Montebello Road, Cupertino map

Statistics:

Max. grade: 16%
Main climb:
Avg. grade: 6.9% (elev. gain/dist)
Length: 5.30 miles (8.53 km)
Elev. gain: 1940 feet (591 m)
Entire profile:
Avg. grade: 6.9%
Length: 5.30 miles (8.53 km)
Climb: 1940 feet (591 m)
Descent: 0 feet (0 m)

Description:

Starting at Stevens Canyon, just past the quarry, this road climbs alongside trees, a creek, vineyards, houses, and dirt fire roads. It is effectively a dead-end for cars, but cyclists may continue on a dirt road over the top of Black Mountain to Page Mill Road.

Altimeter altitude

(Altitude linearly interpolated from altimeter samples, and smoothed with a 0.04mi gaussian.)

Each horizontal line is 100 feet. Each vertical line is 0.2 miles.

Gradiometer grade

(Grade linearly interpolated from gradiometer samples, and smoothed with a 0.04mi gaussian.)

Each horizontal line is 2% grade. Each vertical line is 0.2 miles.

Altimeter grade

(Grade linearly interpolated from altimeter samples, and smoothed with a 0.20mi gaussian.)

Each horizontal line is 2% grade. Each vertical line is 0.2 miles.

Comparison of grades

(Green grade is from the gradiometer, magenta grade is from the altimeter, and white is where they overlap.)

Each horizontal line is 2% grade. Each vertical line is 0.2 miles.

Overall (averaging my first 20 hills), the gradiometer grade averages 0.63 (% grade) higher than the altimeter grade, with a standard deviation of 4.5 (% grade per road). This error may be due to:

In the end, though, I think that each individual sample is accurate to within about 2% for that instantaneous segment of road. My results may not always agree with my altimeter, but they are generally repeatable within 1%. I think that I just need to take more samples to generate more accurate graphs.

Raw Data: 

Dist    Grade   Alti.   Location
----    -----   ------  --------
0.00    15%	550	start - Stevens Canyon Road
0.01	12%	555
0.04	10%	570
0.07	10%	580
0.10	11%	600
0.14	 4%	620	Brookside Stables - left turn
0.16	 9%	630
0.18	10%	640
0.22	12%	660
0.25	10% 	680
0.28	12%	690
0.30	12%	700
0.33	10%	720
0.35	 7%	730
0.38	 6%	740
0.41	 8%	750
0.44	8.5%	760
0.46	4.5%	770
0.50	6%	780
0.52	6%	790
0.54	8%	795
0.57	8.5%	810
0.59	9%	820
0.63	13%	840
0.66	11%	855
0.69	8.5%	870
0.71	12%	880
0.72	12%	890	Peacock Court
0.75	12%	905
0.77	10%	920
0.80	 5%	930
0.84	5.5%	935
0.86	9%	940
0.90	9%	970
0.93	6%	980
0.96	10%	990
0.99	13%	1010
1.02	14%	1030
1.05	14%	1050
1.07	16%	1060
1.08	12%	1070
1.10	 8%	1080
1.12	 6%	1090
1.15	5.5%	1100
1.18	8%	1110
1.20	11.5%	1120
1.23	9.5%	1130
1.27	8%	1150
1.35	7%	1180
1.38	8%	1190
1.41	10%	1200
1.44	11%	1220
1.47	8%	1240
1.49	4%	1240
1.52	11%	1250
1.56	11.5%	1270
1.60	10%	1295	View
1.65	10%	1310
1.68	8%	1335
1.73	9%	1350
1.75	7%	1360	Pichotti home
1.78	1%	1370
1.81	-2.5%	1370
1.83	0%	1370
1.85	8%	1380
1.87	12.5%	1390
1.89	9%	1400
1.92	9.5%	1410
1.94	8%	1425
1.97	6%	1430
1.99	8%	1440
2.03	10%	1455
2.05	8%	1465
2.07	1%	1470	Montebello School
2.10	2%	1470
2.15	0%	1470
2.23	0%	1470
2.30	0%	1475
2.34	5%	1480
2.38	4%	1490
2.43	5.5%	1505
2.48	5%	1520
2.53	4%	1530
2.59	2.5%	1530
2.64	1%	1540	View
2.75	4%	1560
2.82	4.5%	1580
2.90	3%	1590
2.98	1.5%	1600
3.01	4%	1600
3.04	8%	1610
3.08	7%	1625
3.13	9.5%	1640
3.15	10%	1655
3.19	8.5%	1670
3.22	6%	1675
3.26	7.5%	1690
3.31	7.5%	1715
3.34	5%	1725
3.38	7%	1740
3.41	8%	1750
3.43	7%	1760
3.44	10%	1760
3.46	8%	1770
3.50	8%	1780
3.53	7.5%	1800
3.57	8%	1820
3.59	7%	1830
3.64	7%	1840
3.70	8.5%	1870
3.74	7.5%	1880
3.77	7%	1900
3.79	16%	1900	Right switchback 
3.80	10%	1910
3.83	8%	1930
3.86	6.5%	1940
3.90	7%	1955
3.95	5%	1970	whitewashed fence
4.01	5.5%	1990
4.05	8.5%	2000
4.08	6%	2010
4.10	11%	2020
4.12	9.5%	2035
4.15	6%	2040
4.17	7%	2050
4.20	10%	2060
4.23	7.5%	2080	View
4.26	8%	2090
4.29	8.5%	2100
4.33	9%	2120
4.36	8%	2130
4.40	8%	2150
4.43	13%	2160
4.45	13%	2175
4.47	10%	2185
4.50	11%	2200
4.52	10%	2215
4.55	11%	2230
4.58	9%	2240
4.60	6%	2255
4.64	9%	2270
4.66	5%	2280
4.67	8.5%	2285
4.70	11%	2300
4.71	6%	2310
4.73	10%	2320
4.75	5%	2330
4.78	9%	2340
4.80	0%	2340
4.82	2.5%	2340
4.84	7%	2345
4.87	9%	2355
4.90	12.5%	2370
4.92	13%	2390
4.94	8.5%	2400
4.96	1%	2410
4.99	0.5%	2410
5.01	8.5%	2410
5.03	9.5%	2420
5.05	1%	2425
5.08	6.5%	2430
5.10	9.5%	2440
5.12	2%	2445
5.14	5.5%	2450
5.18	4.5%	2460
5.19	7%	2460
5.21	2%	2465
5.24	3%	2470
5.27	8.5%	2470
5.28	9%	2480
5.30	5%	2490	finish -- gate

Back to Lucas's cycling gradiometer page.