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BOSTON MARATHON 2023

Justin Chapman

Bib: 4294•M

OR

0:00
0:00
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Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 26%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:34
Rank: #5861
Start → 5K
21:34 | 6:56/mi
10K· 6.21 mi
43:00
Rank: #5966 (-105)
5K → 10K
21:26 | 6:54/mi
15K· 9.32 mi
1:04:20
Rank: #5853 (+113)
10K → 15K
21:20 | 6:52/mi
20K· 12.43 mi
1:25:37
Rank: #5625 (+228)
15K → 20K
21:17 | 6:51/mi
Half· 13.11 mi
1:30:11
Rank: #5568 (+57)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:46:49
Rank: #5415 (+153)
Half → 25K
16:38 | 6:52/mi
30K· 18.64 mi
2:08:40
Rank: #5193 (+222)
25K → 30K
21:51 | 7:02/mi
20M
2:18:11
Rank: #5051 (+142)
30K → 20M
9:31 | 7:00/mi
21M
2:25:27
Rank: #4924 (+127)
20M → 21M
7:16 | 7:16/mi
35K· 21.75 mi
2:30:31
Rank: #4875 (+49)
21M → 35K
5:04 | 6:46/mi
23M
2:39:02
Rank: #4686 (+189)
35K → 23M
8:31 | 6:48/mi
24M
2:45:32
Rank: #4535 (+151)
23M → 24M
6:30 | 6:30/mi
40K· 24.85 mi
2:51:13
Rank: #4412 (+123)
24M → 40K
5:41 | 6:39/mi
25.2M
2:53:35
Rank: #4328 (+84)
40K → 25.2M
2:22 | 6:52/mi
Finish· 26.22 mi
2:59:54
Rank: #4165 (+163)
25.2M → Finish
6:19 | 6:12/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:30:11
Pace6:53 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:43
Pace6:51 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0021:346:5621:34
6:56
-
10K
6.21 mi10:45:2643:006:5521:26
6:54
-0:02
15K
9.32 mi11:06:461:04:206:5421:20
6:52
-0:02
20K
12.43 mi11:28:031:25:376:5321:17
6:51
-0:01
Half
13.11 mi11:32:371:30:116:534:34
6:42
-0:09
25K
15.53 mi11:49:151:46:496:5316:38
6:52
+0:10
30K
18.64 mi12:11:062:08:406:5421:51
7:02
+0:10
20M
20.00 mi12:20:372:18:116:559:31
7:00
-0:02
21M
21.00 mi12:27:532:25:276:567:16
7:16
+0:16
35K
21.75 mi12:32:572:30:316:555:04
6:46
-0:30
23M
23.00 mi12:41:282:39:026:558:31
6:48
+0:02
24M
24.00 mi12:47:582:45:326:546:30
6:30
-0:18
40K
24.85 mi12:53:392:51:136:535:41
6:39
+0:09
25.2M
25.20 mi12:56:012:53:356:532:22
6:52
+0:13
Finish
26.22 mi13:02:202:59:546:526:19
6:12
-0:40

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

6:12 /mi

Average Pace

6:52 /mi

Slowest Pace

7:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

36:39

20% of race

Time at Steady Pace

2:23:15

80% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:52 /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 mi10:24:0021:346:5621:34
6:56
#5861
10K
6.21 mi10:45:2643:006:5521:26
6:54
#5966
15K
9.32 mi11:06:461:04:206:5421:20
6:52
#5853
20K
12.43 mi11:28:031:25:376:5321:17
6:51
#5625
Half
13.11 mi11:32:371:30:116:534:34
6:42
#5568
25K
15.53 mi11:49:151:46:496:5316:38
6:52
#5415
30K
18.64 mi12:11:062:08:406:5421:51
7:02
#5193
20M
20.00 mi12:20:372:18:116:559:31
7:00
#5051
21M
21.00 mi12:27:532:25:276:567:16
7:16
#4924
35K
21.75 mi12:32:572:30:316:555:04
6:46
#4875
23M
23.00 mi12:41:282:39:026:558:31
6:48
#4686
24M
24.00 mi12:47:582:45:326:546:30
6:30
#4535
40K
24.85 mi12:53:392:51:136:535:41
6:39
#4412
25.2M
25.20 mi12:56:012:53:356:532:22
6:52
#4328
Finish
26.22 mi13:02:202:59:546:526:19
6:12
#4165
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5861537353735688(Top 21%)5219(Top 34%)5219(Top 99%)
10K6.21 mi3.10 mi5966-1055458-855458-856104(Top 23%)5538(Top 36%)5538(Top 105%)
15K9.32 mi3.11 mi5853+1135364+945364+945688(Top 21%)5219(Top 34%)5219(Top 99%)
20K12.43 mi3.11 mi5625+2285182+1825182+1824905(Top 18%)4554(Top 30%)4554(Top 86%)
Half13.11 mi0.68 mi5568+575138+445138+444268(Top 16%)3992(Top 26%)3992(Top 76%)
25K15.53 mi2.42 mi5415+1535001+1375001+1374646(Top 17%)4321(Top 28%)4321(Top 82%)
30K18.64 mi3.11 mi5193+2224805+1964805+1964554(Top 17%)4216(Top 28%)4216(Top 80%)
20M20.00 mi1.36 mi5051+1424678+1274678+1274044(Top 15%)3744(Top 25%)3744(Top 71%)
21M21.00 mi1.00 mi4924+1274567+1114567+1113460(Top 13%)3218(Top 21%)3218(Top 61%)
35K21.75 mi0.75 mi4875+494524+434524+434015(Top 15%)3690(Top 24%)3690(Top 70%)
23M23.00 mi1.25 mi4686+1894357+1674357+1672692(Top 10%)2525(Top 17%)2525(Top 48%)
24M24.00 mi1.00 mi4535+1514228+1294228+1292120(Top 8%)1990(Top 13%)1990(Top 38%)
40K24.85 mi0.85 mi4412+1234116+1124116+1122130(Top 8%)1994(Top 13%)1994(Top 38%)
25.2M25.20 mi0.35 mi4328+844039+774039+771375(Top 5%)1305(Top 9%)1305(Top 25%)
Finish26.22 mi1.02 mi4165+1633894+1453894+1451290(Top 5%)1223(Top 8%)1223(Top 23%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

5688

Males

5219

M18-39

5219

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

6104

Males

5538

M18-39

5538

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

5688

Males

5219

M18-39

5219

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4905

Males

4554

M18-39

4554

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4268

Males

3992

M18-39

3992

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4646

Males

4321

M18-39

4321

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4554

Males

4216

M18-39

4216

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4044

Males

3744

M18-39

3744

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3460

Males

3218

M18-39

3218

21M→35K

21.0 - 21.8 mi

Top 15%
×7stories
+17ft-86ft

Overall

4015

Males

3690

M18-39

3690

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2692

Males

2525

M18-39

2525

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2120

Males

1990

M18-39

1990

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2130

Males

1994

M18-39

1994

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1375

Males

1305

M18-39

1305

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1290

Males

1223

M18-39

1223

Passing Analysis

Category:
Athletes Passed
2154
Passed By
458
Net Change
+1696
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5861
5K → 10K149254-105#5861#5966
10K → 15K19279+113#5966#5853
15K → 20K25123+228#5853#5625
20K → Half625+57#5625#5568
Half → 25K16613+153#5568#5415
25K → 30K25331+222#5415#5193
30K → 20M15412+142#5193#5051
20M → 21M14417+127#5051#4924
21M → 35K6415+49#4924#4875
35K → 23M1912+189#4875#4686
23M → 24M1543+151#4686#4535
24M → 40K1252+123#4535#4412
40K → 25.2M862+84#4412#4328
25.2M → Finish1630+163#4328#4165
TOTALS2154458+1696
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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