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BOSTON MARATHON 2023

Sheldon Guo

Bib: 20080•M

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Top 35%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:36
Rank: #17962
Start → 5K
26:36 | 8:34/mi
10K· 6.21 mi
52:17
Rank: #17302 (+660)
5K → 10K
25:41 | 8:16/mi
15K· 9.32 mi
1:17:59
Rank: #16955 (+347)
10K → 15K
25:42 | 8:16/mi
20K· 12.43 mi
1:43:36
Rank: #16525 (+430)
15K → 20K
25:37 | 8:15/mi
Half· 13.11 mi
1:49:16
Rank: #16527 (-2)
20K → Half
5:40 | 8:18/mi
25K· 15.53 mi
2:09:52
Rank: #16476 (+51)
Half → 25K
20:36 | 8:30/mi
30K· 18.64 mi
2:36:26
Rank: #16092 (+384)
25K → 30K
26:34 | 8:33/mi
20M
2:48:16
Rank: #15987 (+105)
30K → 20M
11:50 | 8:42/mi
21M
2:57:34
Rank: #15906 (+81)
20M → 21M
9:18 | 9:18/mi
35K· 21.75 mi
3:03:59
Rank: #15858 (+48)
21M → 35K
6:25 | 8:35/mi
23M
3:14:53
Rank: #15752 (+106)
35K → 23M
10:54 | 8:42/mi
24M
3:23:27
Rank: #15718 (+34)
23M → 24M
8:34 | 8:34/mi
40K· 24.85 mi
3:30:54
Rank: #15669 (+49)
24M → 40K
7:27 | 8:43/mi
25.2M
3:34:08
Rank: #15658 (+11)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:42:37
Rank: #15598 (+60)
25.2M → Finish
8:29 | 8:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:16
Pace8:20 /mi
2nd Half
Distance13.11 mi
Time1:53:21
Pace8:39 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:2026:368:3426:36
8:34
-
10K
6.21 mi11:46:0152:178:2525:41
8:16
-0:18
15K
9.32 mi12:11:431:17:598:2225:42
8:16
0:00
20K
12.43 mi12:37:201:43:368:2025:37
8:15
-0:01
Half
13.11 mi12:43:001:49:168:205:40
8:18
+0:03
25K
15.53 mi13:03:362:09:528:2220:36
8:30
+0:12
30K
18.64 mi13:30:102:36:268:2426:34
8:33
+0:03
20M
20.00 mi13:42:002:48:168:2511:50
8:42
+0:09
21M
21.00 mi13:51:182:57:348:279:18
9:18
+0:36
35K
21.75 mi13:57:433:03:598:286:25
8:35
-0:43
23M
23.00 mi14:08:373:14:538:2810:54
8:42
+0:07
24M
24.00 mi14:17:113:23:278:298:34
8:34
-0:08
40K
24.85 mi14:24:383:30:548:297:27
8:43
+0:09
25.2M
25.20 mi14:27:523:34:088:303:14
9:23
+0:40
Finish
26.22 mi14:36:213:42:378:308:29
8:19
-1:04

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

8:15 /mi

Average Pace

8:30 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:30:05

94% of race

Time at Steady Pace

12:32

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:29 /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 mi11:20:2026:368:3426:36
8:34
#17962
10K
6.21 mi11:46:0152:178:2525:41
8:16
#17302
15K
9.32 mi12:11:431:17:598:2225:42
8:16
#16955
20K
12.43 mi12:37:201:43:368:2025:37
8:15
#16525
Half
13.11 mi12:43:001:49:168:205:40
8:18
#16527
25K
15.53 mi13:03:362:09:528:2220:36
8:30
#16476
30K
18.64 mi13:30:102:36:268:2426:34
8:33
#16092
20M
20.00 mi13:42:002:48:168:2511:50
8:42
#15987
21M
21.00 mi13:51:182:57:348:279:18
9:18
#15906
35K
21.75 mi13:57:433:03:598:286:25
8:35
#15858
23M
23.00 mi14:08:373:14:538:2810:54
8:42
#15752
24M
24.00 mi14:17:113:23:278:298:34
8:34
#15718
40K
24.85 mi14:24:383:30:548:297:27
8:43
#15669
25.2M
25.20 mi14:27:523:34:088:303:14
9:23
#15658
Finish
26.22 mi14:36:213:42:378:308:29
8:19
#15598
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17962114071140716348(Top 61%)10823(Top 71%)10823(Top 975%)
10K6.21 mi3.10 mi17302+66011166+24111166+24116683(Top 63%)10979(Top 72%)10979(Top 989%)
15K9.32 mi3.11 mi16955+34711054+11211054+11216348(Top 61%)10823(Top 71%)10823(Top 975%)
20K12.43 mi3.11 mi16525+43010874+18010874+18015231(Top 57%)10360(Top 68%)10360(Top 933%)
Half13.11 mi0.68 mi16527-210876-210876-216468(Top 62%)10860(Top 72%)10860(Top 978%)
25K15.53 mi2.42 mi16476+5110831+4510831+4516157(Top 61%)10604(Top 70%)10604(Top 955%)
30K18.64 mi3.11 mi16092+38410642+18910642+18914603(Top 55%)9896(Top 65%)9896(Top 892%)
20M20.00 mi1.36 mi15987+10510582+6010582+6014884(Top 56%)9941(Top 66%)9941(Top 896%)
21M21.00 mi1.00 mi15906+8110528+5410528+5414962(Top 56%)9915(Top 65%)9915(Top 893%)
35K21.75 mi0.75 mi15858+4810490+3810490+3815696(Top 59%)10151(Top 67%)10151(Top 915%)
23M23.00 mi1.25 mi15752+10610416+7410416+7414404(Top 54%)9536(Top 63%)9536(Top 859%)
24M24.00 mi1.00 mi15718+3410385+3110385+3114853(Top 56%)9694(Top 64%)9694(Top 873%)
40K24.85 mi0.85 mi15669+4910362+2310362+2314560(Top 55%)9485(Top 63%)9485(Top 855%)
25.2M25.20 mi0.35 mi15658+1110358+410358+414524(Top 55%)9480(Top 62%)9480(Top 854%)
Finish26.22 mi1.02 mi15598+6010317+4110317+4114234(Top 53%)9353(Top 62%)9353(Top 843%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

16348

Males

10823

M60-64

10823

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

16683

Males

10979

M60-64

10979

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

16348

Males

10823

M60-64

10823

15K→20K

9.3 - 12.4 mi

Top 57%
×5stories
+106ft-86ft

Overall

15231

Males

10360

M60-64

10360

20K→Half

12.4 - 13.1 mi

Top 62%
×2stories
+19ft-37ft

Overall

16468

Males

10860

M60-64

10860

Half→25K

13.1 - 15.5 mi

Top 61%
×4stories
+66ft-88ft

Overall

16157

Males

10604

M60-64

10604

25K→30K

15.5 - 18.6 mi

Top 55%
×9stories
+181ft-148ft

Overall

14603

Males

9896

M60-64

9896

30K→20M

18.6 - 20.0 mi

Top 56%
×5stories
+64ft-50ft

Overall

14884

Males

9941

M60-64

9941

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

14962

Males

9915

M60-64

9915

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

15696

Males

10151

M60-64

10151

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

14404

Males

9536

M60-64

9536

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

14853

Males

9694

M60-64

9694

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

14560

Males

9485

M60-64

9485

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14524

Males

9480

M60-64

9480

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

14234

Males

9353

M60-64

9353

Passing Analysis

Category:
Athletes Passed
3007
Passed By
643
Net Change
+2364
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17962
5K → 10K780120+660#17962#17302
10K → 15K41669+347#17302#16955
15K → 20K45727+430#16955#16525
20K → Half2830-2#16525#16527
Half → 25K154103+51#16527#16476
25K → 30K41430+384#16476#16092
30K → 20M13126+105#16092#15987
20M → 21M12544+81#15987#15906
21M → 35K7527+48#15906#15858
35K → 23M13630+106#15858#15752
23M → 24M8652+34#15752#15718
24M → 40K8637+49#15718#15669
40K → 25.2M3120+11#15669#15658
25.2M → Finish8828+60#15658#15598
TOTALS3007643+2364
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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