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BOSTON MARATHON 2023

Shangdi Mo

Bib: 19139•M

MD

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 43%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 48%
Division (M55-59)
#0 / 1422
Top 32%
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
8:01/mi
24:54
↑ 97↓ 3451.5%
10K· 6.21 mi
7:33/mi
48:22
↑ 79↓ 1380.4%
15K· 9.32 mi
7:35/mi
1:11:57
↑ 67↓ 78
20K· 12.43 mi
7:42/mi
1:35:53
↑ 106↓ 860.1%
Half· 13.11 mi
7:26/mi
1:40:57
↑ 19↓ 370.5%
25K· 15.53 mi
7:49/mi
1:59:54
↑ 66↓ 880.2%
30K· 18.64 mi
8:08/mi
2:25:11
↑ 181↓ 1480.2%
20M
8:14/mi
2:36:22
↑ 64↓ 500.2%
21M
8:46/mi
2:45:08
↑ 106↓ 241.6%
35K· 21.75 mi
8:00/mi
2:51:07
↑ 17↓ 861.7%
23M
8:18/mi
3:01:30
↑ 23↓ 630.6%
24M
7:51/mi
3:09:21
↓ 821.3%
40K· 24.85 mi
8:15/mi
3:16:24
↓ 200.3%
25.2M
8:54/mi
3:19:28
↑ 13↓ 160.2%
Finish· 26.22 mi
8:11/mi
3:27:48
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:57
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:46:51
Pace8:09 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4224:548:0124:54
8:01
-
10K
6.21 mi11:40:1048:227:4723:28
7:33
-0:28
15K
9.32 mi12:03:451:11:577:4323:35
7:35
+0:02
20K
12.43 mi12:27:411:35:537:4323:56
7:42
+0:07
Half
13.11 mi12:32:451:40:577:425:04
7:26
-0:16
25K
15.53 mi12:51:421:59:547:4318:57
7:49
+0:23
30K
18.64 mi13:16:592:25:117:4725:17
8:08
+0:19
20M
20.00 mi13:28:102:36:227:4911:11
8:14
+0:06
21M
21.00 mi13:36:562:45:087:528:46
8:46
+0:32
35K
21.75 mi13:42:552:51:077:525:59
8:00
-0:46
23M
23.00 mi13:53:183:01:307:5310:23
8:18
+0:18
24M
24.00 mi14:01:093:09:217:537:51
7:51
-0:27
40K
24.85 mi14:08:123:16:247:547:03
8:15
+0:24
25.2M
25.20 mi14:11:163:19:287:553:04
8:54
+0:39
Finish
26.22 mi14:19:363:27:487:568:20
8:11
-0:43

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

7:26 /mi

Average Pace

7:56 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:01

77% of race

Time at Steady Pace

45:43

22% of race

Time at Slower Pace

3:04

1% of race

Average Pace: 7:56 /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 mi11:16:4224:548:0124:54
8:01
#14110
10K
6.21 mi11:40:1048:227:4723:28
7:33
#12543
15K
9.32 mi12:03:451:11:577:4323:35
7:35
#11947
20K
12.43 mi12:27:411:35:537:4323:56
7:42
#11651
Half
13.11 mi12:32:451:40:577:425:04
7:26
#11536
25K
15.53 mi12:51:421:59:547:4318:57
7:49
#11449
30K
18.64 mi13:16:592:25:117:4725:17
8:08
#11505
20M
20.00 mi13:28:102:36:227:4911:11
8:14
#11517
21M
21.00 mi13:36:562:45:087:528:46
8:46
#11544
35K
21.75 mi13:42:552:51:077:525:59
8:00
#11559
23M
23.00 mi13:53:183:01:307:5310:23
8:18
#11564
24M
24.00 mi14:01:093:09:217:537:51
7:51
#11503
40K
24.85 mi14:08:123:16:247:547:03
8:15
#11502
25.2M
25.20 mi14:11:163:19:287:553:04
8:54
#11491
Finish
26.22 mi14:19:363:27:487:568:20
8:11
#11547
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi141109992999210930(Top 41%)8619(Top 57%)8619(Top 606%)
10K6.21 mi3.10 mi12543+15679344+6489344+64810901(Top 41%)8630(Top 57%)8630(Top 607%)
15K9.32 mi3.11 mi11947+5969068+2769068+27610930(Top 41%)8619(Top 57%)8619(Top 606%)
20K12.43 mi3.11 mi11651+2968926+1428926+14210947(Top 41%)8554(Top 56%)8554(Top 602%)
Half13.11 mi0.68 mi11536+1158875+518875+519619(Top 36%)7900(Top 52%)7900(Top 556%)
25K15.53 mi2.42 mi11449+878815+608815+6011204(Top 42%)8594(Top 57%)8594(Top 604%)
30K18.64 mi3.11 mi11505-568799+168799+1611903(Top 45%)8760(Top 58%)8760(Top 616%)
20M20.00 mi1.36 mi11517-128776+238776+2311869(Top 45%)8654(Top 57%)8654(Top 609%)
21M21.00 mi1.00 mi11544-278772+48772+412045(Top 45%)8603(Top 57%)8603(Top 605%)
35K21.75 mi0.75 mi11559-158764+88764+812074(Top 45%)8583(Top 57%)8583(Top 604%)
23M23.00 mi1.25 mi11564-58744+208744+2011817(Top 44%)8382(Top 55%)8382(Top 589%)
24M24.00 mi1.00 mi11503+618692+528692+5210145(Top 38%)7479(Top 49%)7479(Top 526%)
40K24.85 mi0.85 mi11502+18671+218671+2111639(Top 44%)8141(Top 54%)8141(Top 573%)
25.2M25.20 mi0.35 mi11491+118657+148657+1411832(Top 44%)8175(Top 54%)8175(Top 575%)
Finish26.22 mi1.02 mi11547-568649+88649+813256(Top 50%)8901(Top 59%)8901(Top 626%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

10930

Males

8619

M55-59

8619

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

10901

Males

8630

M55-59

8630

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

10930

Males

8619

M55-59

8619

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

10947

Males

8554

M55-59

8554

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

9619

Males

7900

M55-59

7900

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

11204

Males

8594

M55-59

8594

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

11903

Males

8760

M55-59

8760

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

11869

Males

8654

M55-59

8654

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

12045

Males

8603

M55-59

8603

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

12074

Males

8583

M55-59

8583

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

11817

Males

8382

M55-59

8382

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10145

Males

7479

M55-59

7479

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11639

Males

8141

M55-59

8141

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11832

Males

8175

M55-59

8175

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

13256

Males

8901

M55-59

8901

Passing Analysis

Category:
Athletes Passed
3575
Passed By
1012
Net Change
+2563
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14110
5K → 10K159629+1567#14110#12543
10K → 15K62024+596#12543#11947
15K → 20K35054+296#11947#11651
20K → Half1150+115#11651#11536
Half → 25K15770+87#11536#11449
25K → 30K166222-56#11449#11505
30K → 20M89101-12#11505#11517
20M → 21M79106-27#11517#11544
21M → 35K4964-15#11544#11559
35K → 23M96101-5#11559#11564
23M → 24M9635+61#11564#11503
24M → 40K6867+1#11503#11502
40K → 25.2M3827+11#11502#11491
25.2M → Finish56112-56#11491#11547
TOTALS35751012+2563
📊

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