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BOSTON MARATHON 2023

David Sacco

Bib: 11866•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:22/mi
26:01
↑ 97↓ 3451.5%
10K· 6.21 mi
8:13/mi
51:33
↑ 79↓ 1380.4%
15K· 9.32 mi
8:11/mi
1:17:00
↑ 67↓ 78
20K· 12.43 mi
8:20/mi
1:42:54
↑ 106↓ 860.1%
Half· 13.11 mi
8:52/mi
1:48:57
↑ 19↓ 370.5%
25K· 15.53 mi
9:41/mi
2:12:26
↑ 66↓ 880.2%
30K· 18.64 mi
10:14/mi
2:44:14
↑ 181↓ 1480.2%
20M
11:02/mi
2:59:14
↑ 64↓ 500.2%
21M
11:35/mi
3:10:49
↑ 106↓ 241.6%
35K· 21.75 mi
11:27/mi
3:19:23
↑ 17↓ 861.7%
23M
11:16/mi
3:33:29
↑ 23↓ 630.6%
24M
11:06/mi
3:44:35
↓ 821.3%
40K· 24.85 mi
11:23/mi
3:54:19
↓ 200.3%
25.2M
12:08/mi
3:58:30
↑ 13↓ 160.2%
Finish· 26.22 mi
11:08/mi
4:09:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:57
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time2:20:54
Pace10:45 /mi
📊Positive Split: 29.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4326:018:2226:01
8:22
-
10K
6.21 mi11:44:1551:338:1825:32
8:13
-0:09
15K
9.32 mi12:09:421:17:008:1625:27
8:11
-0:02
20K
12.43 mi12:35:361:42:548:1725:54
8:20
+0:09
Half
13.11 mi12:41:391:48:578:196:03
8:52
+0:32
25K
15.53 mi13:05:082:12:268:3223:29
9:41
+0:49
30K
18.64 mi13:36:562:44:148:4931:48
10:14
+0:33
20M
20.00 mi13:51:562:59:148:5815:00
11:02
+0:48
21M
21.00 mi14:03:313:10:499:0511:35
11:35
+0:33
35K
21.75 mi14:12:053:19:239:108:34
11:27
-0:08
23M
23.00 mi14:26:113:33:299:1714:06
11:16
-0:11
24M
24.00 mi14:37:173:44:359:2111:06
11:06
-0:10
40K
24.85 mi14:47:013:54:199:269:44
11:23
+0:17
25.2M
25.20 mi14:51:123:58:309:284:11
12:08
+0:45
Finish
26.22 mi15:02:334:09:519:3211:21
11:08
-1:00

Checkpoints & Pacing

📈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

8:11 /mi

Average Pace

9:32 /mi

Slowest Pace

12:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:14

66% of race

Time at Steady Pace

1:21:26

33% of race

Time at Slower Pace

4:11

2% of race

Average Pace: 9:32 /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.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:18:4326:018:2226:01
8:22
#16674
10K
6.21 mi11:44:1551:338:1825:32
8:13
#16472
15K
9.32 mi12:09:421:17:008:1625:27
8:11
#16252
20K
12.43 mi12:35:361:42:548:1725:54
8:20
#16123
Half
13.11 mi12:41:391:48:578:196:03
8:52
#16372
25K
15.53 mi13:05:082:12:268:3223:29
9:41
#17488
30K
18.64 mi13:36:562:44:148:4931:48
10:14
#18647
20M
20.00 mi13:51:562:59:148:5815:00
11:02
#19180
21M
21.00 mi14:03:313:10:499:0511:35
11:35
#19452
35K
21.75 mi14:12:053:19:239:108:34
11:27
#19756
23M
23.00 mi14:26:113:33:299:1714:06
11:16
#20069
24M
24.00 mi14:37:173:44:359:2111:06
11:06
#20267
40K
24.85 mi14:47:013:54:199:269:44
11:23
#20384
25.2M
25.20 mi14:51:123:58:309:284:11
12:08
#20424
Finish
26.22 mi15:02:334:09:519:3211:21
11:08
#20642
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi16674109451094515802(Top 59%)10620(Top 70%)10620(Top 747%)
10K6.21 mi3.10 mi16472+20210889+5610889+5616389(Top 62%)10868(Top 72%)10868(Top 764%)
15K9.32 mi3.11 mi16252+22010793+9610793+9615802(Top 59%)10620(Top 70%)10620(Top 747%)
20K12.43 mi3.11 mi16123+12910723+7010723+7015845(Top 60%)10578(Top 70%)10578(Top 744%)
Half13.11 mi0.68 mi16372-24910816-9310816-9319827(Top 74%)12240(Top 81%)12240(Top 861%)
25K15.53 mi2.42 mi17488-111611236-42011236-42021401(Top 80%)12879(Top 85%)12879(Top 906%)
30K18.64 mi3.11 mi18647-115911685-44911685-44921617(Top 81%)12901(Top 85%)12901(Top 907%)
20M20.00 mi1.36 mi19180-53311903-21811903-21822756(Top 85%)13343(Top 88%)13343(Top 938%)
21M21.00 mi1.00 mi19452-27211997-9411997-9422009(Top 83%)12992(Top 86%)12992(Top 914%)
35K21.75 mi0.75 mi19756-30412127-13012127-13024018(Top 90%)13856(Top 91%)13856(Top 974%)
23M23.00 mi1.25 mi20069-31312237-11012237-11022826(Top 86%)13302(Top 88%)13302(Top 935%)
24M24.00 mi1.00 mi20267-19812318-8112318-8123218(Top 87%)13445(Top 89%)13445(Top 945%)
40K24.85 mi0.85 mi20384-11712359-4112359-4123025(Top 86%)13330(Top 88%)13330(Top 937%)
25.2M25.20 mi0.35 mi20424-4012368-912368-922705(Top 85%)13176(Top 87%)13176(Top 927%)
Finish26.22 mi1.02 mi20642-21812451-8312451-8324191(Top 91%)13924(Top 92%)13924(Top 979%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

15802

Males

10620

M55-59

10620

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

16389

Males

10868

M55-59

10868

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

15802

Males

10620

M55-59

10620

15K→20K

9.3 - 12.4 mi

Top 60%
×5story building
+106ft-86ft

Overall

15845

Males

10578

M55-59

10578

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

19827

Males

12240

M55-59

12240

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

21401

Males

12879

M55-59

12879

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

21617

Males

12901

M55-59

12901

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

22756

Males

13343

M55-59

13343

20M→21M

20.0 - 21.0 mi

Top 83%
×8story building
+106ft-24ft

Overall

22009

Males

12992

M55-59

12992

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

24018

Males

13856

M55-59

13856

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

22826

Males

13302

M55-59

13302

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

23218

Males

13445

M55-59

13445

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

23025

Males

13330

M55-59

13330

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22705

Males

13176

M55-59

13176

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2story building
+22ft-21ft

Overall

24191

Males

13924

M55-59

13924

Passing Analysis

Category:
Athletes Passed
1108
Passed By
5076
Net Change
-3968
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16674
5K → 10K422220+202#16674#16472
10K → 15K31494+220#16472#16252
15K → 20K22798+129#16252#16123
20K → Half9258-249#16123#16372
Half → 25K121128-1116#16372#17488
25K → 30K201179-1159#17488#18647
30K → 20M13546-533#18647#19180
20M → 21M26298-272#19180#19452
21M → 35K6310-304#19452#19756
35K → 23M18331-313#19756#20069
23M → 24M10208-198#20069#20267
24M → 40K11128-117#20267#20384
40K → 25.2M1454-40#20384#20424
25.2M → Finish6224-218#20424#20642
TOTALS11085076-3968
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing