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BOSTON MARATHON 2023

Chapin Jacob

Bib: 3468•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 3%
Gender (Male)
#0 / 15176
Top 5%
Division (M18-39)
#0 / 5285
Top 13%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:40
Rank: #1533
Start → 5K
19:40 | 6:20/mi
10K· 6.21 mi
38:58
Rank: #1453 (+80)
5K → 10K
19:18 | 6:13/mi
15K· 9.32 mi
58:16
Rank: #1379 (+74)
10K → 15K
19:18 | 6:13/mi
20K· 12.43 mi
1:17:28
Rank: #1248 (+131)
15K → 20K
19:12 | 6:11/mi
Half· 13.11 mi
1:21:36
Rank: #1228 (+20)
20K → Half
4:08 | 6:03/mi
25K· 15.53 mi
1:36:25
Rank: #1147 (+81)
Half → 25K
14:49 | 6:07/mi
30K· 18.64 mi
1:55:45
Rank: #1052 (+95)
25K → 30K
19:20 | 6:13/mi
20M
2:04:14
Rank: #1009 (+43)
30K → 20M
8:29 | 6:15/mi
21M
2:10:48
Rank: #977 (+32)
20M → 21M
6:34 | 6:34/mi
35K· 21.75 mi
2:15:19
Rank: #960 (+17)
21M → 35K
4:31 | 6:02/mi
23M
2:23:11
Rank: #936 (+24)
35K → 23M
7:52 | 6:17/mi
24M
2:29:14
Rank: #904 (+32)
23M → 24M
6:03 | 6:03/mi
40K· 24.85 mi
2:34:31
Rank: #885 (+19)
24M → 40K
5:17 | 6:11/mi
25.2M
2:36:49
Rank: #879 (+6)
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:42:52
Rank: #845 (+34)
25.2M → Finish
6:03 | 5:56/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:21:36
Pace6:13 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:21:16
Pace6:12 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:3919:406:2019:40
6:20
-
10K
6.21 mi10:39:5738:586:1619:18
6:13
-0:07
15K
9.32 mi10:59:1558:166:1519:18
6:13
0:00
20K
12.43 mi11:18:271:17:286:1419:12
6:11
-0:02
Half
13.11 mi11:22:351:21:366:134:08
6:03
-0:08
25K
15.53 mi11:37:241:36:256:1214:49
6:07
+0:04
30K
18.64 mi11:56:441:55:456:1319:20
6:13
+0:06
20M
20.00 mi12:05:132:04:146:138:29
6:15
+0:02
21M
21.00 mi12:11:472:10:486:146:34
6:34
+0:19
35K
21.75 mi12:16:182:15:196:134:31
6:02
-0:32
23M
23.00 mi12:24:102:23:116:147:52
6:17
+0:15
24M
24.00 mi12:30:132:29:146:136:03
6:03
-0:14
40K
24.85 mi12:35:302:34:316:135:17
6:11
+0:08
25.2M
25.20 mi12:37:482:36:496:132:18
6:40
+0:29
Finish
26.22 mi12:43:512:42:526:136:03
5:56
-0:44

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

5:56 /mi

Average Pace

6:13 /mi

Slowest Pace

6:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:00

95% of race

Time at Steady Pace

8:52

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:13 /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 mi10:20:3919:406:2019:40
6:20
#1533
10K
6.21 mi10:39:5738:586:1619:18
6:13
#1453
15K
9.32 mi10:59:1558:166:1519:18
6:13
#1379
20K
12.43 mi11:18:271:17:286:1419:12
6:11
#1248
Half
13.11 mi11:22:351:21:366:134:08
6:03
#1228
25K
15.53 mi11:37:241:36:256:1214:49
6:07
#1147
30K
18.64 mi11:56:441:55:456:1319:20
6:13
#1052
20M
20.00 mi12:05:132:04:146:138:29
6:15
#1009
21M
21.00 mi12:11:472:10:486:146:34
6:34
#977
35K
21.75 mi12:16:182:15:196:134:31
6:02
#960
23M
23.00 mi12:24:102:23:116:147:52
6:17
#936
24M
24.00 mi12:30:132:29:146:136:03
6:03
#904
40K
24.85 mi12:35:302:34:316:135:17
6:11
#885
25.2M
25.20 mi12:37:482:36:496:132:18
6:40
#879
Finish
26.22 mi12:43:512:42:526:136:03
5:56
#845
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1533146014601277(Top 5%)1215(Top 8%)1215(Top 23%)
10K6.21 mi3.10 mi1453+801385+751385+751391(Top 5%)1326(Top 9%)1326(Top 25%)
15K9.32 mi3.11 mi1379+741314+711314+711277(Top 5%)1215(Top 8%)1215(Top 23%)
20K12.43 mi3.11 mi1248+1311188+1261188+126993(Top 4%)943(Top 6%)943(Top 18%)
Half13.11 mi0.68 mi1228+201170+181170+18914(Top 3%)871(Top 6%)871(Top 16%)
25K15.53 mi2.42 mi1147+811092+781092+78776(Top 3%)735(Top 5%)735(Top 14%)
30K18.64 mi3.11 mi1052+951002+901002+90734(Top 3%)697(Top 5%)697(Top 13%)
20M20.00 mi1.36 mi1009+43959+43959+43744(Top 3%)705(Top 5%)705(Top 13%)
21M21.00 mi1.00 mi977+32930+29930+29784(Top 3%)741(Top 5%)741(Top 14%)
35K21.75 mi0.75 mi960+17913+17913+17768(Top 3%)727(Top 5%)727(Top 14%)
23M23.00 mi1.25 mi936+24889+24889+24792(Top 3%)751(Top 5%)751(Top 14%)
24M24.00 mi1.00 mi904+32857+32857+32652(Top 2%)617(Top 4%)617(Top 12%)
40K24.85 mi0.85 mi885+19838+19838+19623(Top 2%)588(Top 4%)588(Top 11%)
25.2M25.20 mi0.35 mi879+6833+5833+5805(Top 3%)766(Top 5%)766(Top 14%)
Finish26.22 mi1.02 mi845+34800+33800+33593(Top 2%)564(Top 4%)564(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1277

Males

1215

M18-39

1215

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1391

Males

1326

M18-39

1326

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1277

Males

1215

M18-39

1215

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

993

Males

943

M18-39

943

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

914

Males

871

M18-39

871

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

776

Males

735

M18-39

735

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

734

Males

697

M18-39

697

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

744

Males

705

M18-39

705

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

784

Males

741

M18-39

741

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

768

Males

727

M18-39

727

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

792

Males

751

M18-39

751

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

652

Males

617

M18-39

617

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

623

Males

588

M18-39

588

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

805

Males

766

M18-39

766

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

593

Males

564

M18-39

564

Passing Analysis

Category:
Athletes Passed
774
Passed By
86
Net Change
+688
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1533
5K → 10K12040+80#1533#1453
10K → 15K9218+74#1453#1379
15K → 20K1354+131#1379#1248
20K → Half222+20#1248#1228
Half → 25K821+81#1228#1147
25K → 30K983+95#1147#1052
30K → 20M463+43#1052#1009
20M → 21M364+32#1009#977
21M → 35K181+17#977#960
35K → 23M273+24#960#936
23M → 24M320+32#936#904
24M → 40K212+19#904#885
40K → 25.2M104+6#885#879
25.2M → Finish351+34#879#845
TOTALS77486+688
📊

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