David Duffin

Bib: 8136•M•Age: 58

Santa Clara, CA

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 7166

Gender (Male)

#0 / 5052

Masters (Masters Men)

#0 / 1321

Division (M55-59)

#0 / 145

Race Day Weather

59°/49°F

scattered clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start

0:00:00

Race begins

Start

0:00:00

Race begins

23:39

Rank: #6692

Start → 2M

23:39 | 11:49/mi

23:39

Rank: #6692

Start → 2M

23:39 | 11:49/mi

47:44

Rank: #6635 (+57)

2M → 4M

24:05 | 12:03/mi

47:44

Rank: #6635 (+57)

2M → 4M

24:05 | 12:03/mi

1:17:38

Rank: #7024 (-389)

4M → 6M

29:54 | 14:57/mi

1:17:38

Rank: #7024 (-389)

4M → 6M

29:54 | 14:57/mi

1:41:14

Rank: #6952 (+72)

6M → 8M

23:36 | 11:48/mi

1:41:14

Rank: #6952 (+72)

6M → 8M

23:36 | 11:48/mi

9.6M

2:02:46

Rank: #6913 (+39)

8M → 9.6M

21:32 | 13:27/mi

9.6M

2:02:46

Rank: #6913 (+39)

8M → 9.6M

21:32 | 13:27/mi

10M

2:06:07

Rank: #6880 (+33)

9.6M → 10M

3:21 | 8:23/mi

10M

2:06:07

Rank: #6880 (+33)

9.6M → 10M

3:21 | 8:23/mi

10.5M

2:13:50

Rank: #6786 (+94)

10M → 10.5M

7:43 | 15:26/mi

10.5M

2:13:50

Rank: #6786 (+94)

10M → 10.5M

7:43 | 15:26/mi

12M

2:31:13

Rank: #6694 (+92)

10.5M → 12M

17:23 | 11:35/mi

12M

2:31:13

Rank: #6694 (+92)

10.5M → 12M

17:23 | 11:35/mi

14M

2:56:54

Rank: #6569 (+125)

12M → 14M

25:41 | 12:50/mi

14M

2:56:54

Rank: #6569 (+125)

12M → 14M

25:41 | 12:50/mi

16M

3:20:19

Rank: #6537 (+32)

14M → 16M

23:25 | 11:42/mi

16M

3:20:19

Rank: #6537 (+32)

14M → 16M

23:25 | 11:42/mi

18M

3:43:43

Rank: #6337 (+200)

16M → 18M

23:24 | 11:42/mi

18M

3:43:43

Rank: #6337 (+200)

16M → 18M

23:24 | 11:42/mi

20M

4:07:05

Rank: #6169 (+168)

18M → 20M

23:22 | 11:41/mi

20M

4:07:05

Rank: #6169 (+168)

18M → 20M

23:22 | 11:41/mi

22M

4:29:18

Rank: #6027 (+142)

20M → 22M

22:13 | 11:06/mi

22M

4:29:18

Rank: #6027 (+142)

20M → 22M

22:13 | 11:06/mi

24M

4:52:55

Rank: #5818 (+209)

22M → 24M

23:37 | 11:49/mi

24M

4:52:55

Rank: #5818 (+209)

22M → 24M

23:37 | 11:49/mi

Finish· 26.22 mi

5:18:29

Rank: #5667 (+151)

24M → Finish

25:34 | 11:31/mi

Finish· 26.22 mi

5:18:29

Rank: #5667 (+151)

24M → Finish

25:34 | 11:31/mi

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Half Splits

1st Half· via 14M

Distance14.00 mi

Time2:56:54

Pace12:38 /mi

2nd Half✓ Faster

Distance12.22 mi

Time2:21:35

Pace11:35 /mi

📊Negative Split: 20.0% faster second half

Checkpoint Splits

Checkpoint	Distance	Time of Day	Time	Avg Pace	Segment Time	Segment Pace	Diff
2M	2.00 mi	06:01:10	23:39	11:49	23:39	11:49	-
4M	4.00 mi	06:25:15	47:44	11:56	24:05	12:03	+0:14
6M	6.00 mi	06:55:09	1:17:38	12:56	29:54	14:57	+2:54
8M	8.00 mi	07:18:45	1:41:14	12:39	23:36	11:48	-3:09
9.6M	9.60 mi	07:40:17	2:02:46	12:47	21:32	13:27	+1:39
10M	10.00 mi	07:43:38	2:06:07	12:37	3:21	8:23	-5:04
10.5M	10.50 mi	07:51:21	2:13:50	12:45	7:43	15:26	+7:03
12M	12.00 mi	08:08:44	2:31:13	12:36	17:23	11:35	-3:51
14M	14.00 mi	08:34:25	2:56:54	12:38	25:41	12:50	+1:15
16M	16.00 mi	08:57:50	3:20:19	12:31	23:25	11:42	-1:08
18M	18.00 mi	09:21:14	3:43:43	12:26	23:24	11:42	0:00
20M	20.00 mi	09:44:36	4:07:05	12:21	23:22	11:41	-0:01
22M	22.00 mi	10:06:49	4:29:18	12:14	22:13	11:06	-0:35
24M	24.00 mi	10:30:26	4:52:55	12:12	23:37	11:49	+0:43
Finish	26.22 mi	10:56:00	5:18:29	12:09	25:34	11:31	-0:18

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

8:23 /mi

Average Pace

12:09 /mi

Slowest Pace

15:26 /mi

Loading chart...

Fastest

Middle

Slowest

Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

3:21

1% of race

Time at Steady Pace

3:50:18

72% of race

Time at Slower Pace

1:24:50

27% of race

Average Pace: 12:09 /mi

Loading chart...

Faster pace (< avg)

Steady pace (≈ avg)

Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

0mi6.6mi13.1mi19.7mi26.2mi

Pace:

Faster

Steady

Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

Checkpoint	Distance	Time of Day	Time	Avg Pace	Segment	Pace	Rank
2M	2.00 mi	06:01:10	23:39	11:49	23:39	11:49	#6692
4M	4.00 mi	06:25:15	47:44	11:56	24:05	12:03	#6635
6M	6.00 mi	06:55:09	1:17:38	12:56	29:54	14:57	#7024
8M	8.00 mi	07:18:45	1:41:14	12:39	23:36	11:48	#6952
9.6M	9.60 mi	07:40:17	2:02:46	12:47	21:32	13:27	#6913
10M	10.00 mi	07:43:38	2:06:07	12:37	3:21	8:23	#6880
10.5M	10.50 mi	07:51:21	2:13:50	12:45	7:43	15:26	#6786
12M	12.00 mi	08:08:44	2:31:13	12:36	17:23	11:35	#6694
14M	14.00 mi	08:34:25	2:56:54	12:38	25:41	12:50	#6569
16M	16.00 mi	08:57:50	3:20:19	12:31	23:25	11:42	#6537
18M	18.00 mi	09:21:14	3:43:43	12:26	23:24	11:42	#6337
20M	20.00 mi	09:44:36	4:07:05	12:21	23:22	11:41	#6169
22M	22.00 mi	10:06:49	4:29:18	12:14	22:13	11:06	#6027
24M	24.00 mi	10:30:26	4:52:55	12:12	23:37	11:49	#5818
Finish	26.22 mi	10:56:00	5:18:29	12:09	25:34	11:31	#5667

Faster pace

Steady pace

Slower pace

Est.Checkpoint not recorded (estimated)

~Segment time uses estimated prior

Featured Segment

Garmin Challenge

The climb, presented by Garmin

Top 78%

Garmin Challenge

Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

11:04

Segment Time

12:18/mi

Pace

0.90 mi

Distance

Overall

5614

Men

4129

Division

102

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

Checkpoint	Distance	Seg. Dist	Overall	Males	M55-59	Seg. Overall	Seg. Males	Seg. M55-59
2M	2.00 mi	2.00 mi	6692	4801	134	5733(Top 80%)	4216(Top 83%)	104(Top 72%)
4M	4.00 mi	2.00 mi	6635+57	4759+42	129+5	6598(Top 92%)	4736(Top 94%)	127(Top 88%)
6M	6.00 mi	2.00 mi	7024-389	4980-221	139-10	7154(Top 100%)	5058(Top 100%)	143(Top 99%)
8M	8.00 mi	2.00 mi	6952+72	4950+30	138+1	6561(Top 92%)	4755(Top 94%)	126(Top 87%)
9.6M	9.60 mi	1.60 mi	6913+39	4929+21	134+4	6558(Top 92%)	4698(Top 93%)	126(Top 87%)
10M	10.00 mi	0.40 mi	6880+33	4905+24	134	6191(Top 86%)	4499(Top 89%)	117(Top 81%)
10.5M	10.50 mi	0.50 mi	6786+94	4853+52	132+2	5483(Top 77%)	4039(Top 80%)	101(Top 70%)
12M	12.00 mi	1.50 mi	6694+92	4805+48	130+2	5733(Top 80%)	4216(Top 83%)	104(Top 72%)
14M	14.00 mi	2.00 mi	6569+125	4726+79	125+5	5851(Top 82%)	4281(Top 85%)	111(Top 77%)
16M	16.00 mi	2.00 mi	6537+32	4699+27	125	6005(Top 84%)	4341(Top 86%)	121(Top 83%)
18M	18.00 mi	2.00 mi	6337+200	4578+121	121+4	4173(Top 58%)	3136(Top 62%)	70(Top 48%)
20M	20.00 mi	2.00 mi	6169+168	4469+109	117+4	4549(Top 63%)	3331(Top 66%)	78(Top 54%)
22M	22.00 mi	2.00 mi	6027+142	4380+89	113+4	4370(Top 61%)	3163(Top 63%)	76(Top 52%)
24M	24.00 mi	2.00 mi	5818+209	4241+139	109+4	3670(Top 51%)	2682(Top 53%)	57(Top 39%)
Finish	26.22 mi	2.22 mi	5667+151	4144+97	105+4	4072(Top 57%)	2943(Top 58%)	62(Top 43%)

18M→20M

18.0 - 20.0 mi

Top 63%

×3stories

+52ft-26ft

Overall

4549

Males

3331

M55-59

20M→22M

20.0 - 22.0 mi

Top 61%

×21stories

+17ft-266ft

Overall

4370

Males

3163

M55-59

22M→24M

22.0 - 24.0 mi

Top 51%

×3stories

+70ft-85ft

Overall

3670

Males

2682

M55-59

24M→Finish

24.0 - 26.2 mi

Top 57%

~flat

+2ft-2ft

Overall

4072

Males

2943

M55-59

Passing Analysis

Category:

Athletes Passed

1622*

Passed By

597

Net Change

+1025

Segment	Athletes Passed	Passed By	Net Change	Start Rank	End Rank
Start → 2M	-	-	-	-	#6692
2M → 4M	135*	78	+57	#6692	#6635
4M → 6M	26*	415	-389	#6635	#7024
6M → 8M	86*	14	+72	#7024	#6952
8M → 9.6M	59*	20	+39	#6952	#6913
9.6M → 10M	34	1	+33	#6913	#6880
10M → 10.5M	96*	2	+94	#6880	#6786
10.5M → 12M	101	9	+92	#6786	#6694
12M → 14M	137*	12	+125	#6694	#6569
14M → 16M	69*	37	+32	#6569	#6537
16M → 18M	201*	1	+200	#6537	#6337
18M → 20M	168*	0	+168	#6337	#6169
20M → 22M	143*	1	+142	#6169	#6027
22M → 24M	210*	1	+209	#6027	#5818
24M → Finish	157*	6	+151	#5818	#5667
TOTALS	1622*	597	+1025

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:

Category:

📈Position Graph

🎨Heatmap Timeline

🔄Passing Circle

🌊Position Flow

🏃Race Lanes

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Results processed 4 days ago

Public Race Data

Enhanced athlete results built from publicly available data.

Race managed by

The San Francisco Marathon

Race timed by

Race Place Events

David Duffin

⏱️ Race Timeline

Race Animation with Course Map

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Half Splits

Checkpoint Splits

Checkpoint Splits Visualizations

📈Pace Line

Pace Progression

📊Segments

Segment Time Comparison

🎨Heatmap

Pace Heatmap

✨Sparklines

Checkpoint Splits with Pace Trends

Garmin Challenge

Checkpoint and Segment Rankings

Segment Performance Analysis

10.5M→12M

2M→4M

4M→6M

6M→8M

8M→9.6M

9.6M→10M

10M→10.5M

10.5M→12M

12M→14M

14M→16M

16M→18M

18M→20M

20M→22M

22M→24M

24M→Finish

Passing Analysis

Passing Analysis Visualizations

📈Position Graph

🎨Heatmap Timeline

🔄Passing Circle

🌊Position Flow

🏃Race Lanes

⚖️ Age Grade

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Race Analytics

Course Information

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Public Race Data