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BOSTON MARATHON 2023

Justin Keen

Bib: 4099•M

PA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 7%
Gender (Male)
#0 / 15176
Top 11%
Division (M18-39)
#0 / 5285
Top 26%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:23
Rank: #1242
Start → 5K
19:23 | 6:14/mi
10K· 6.21 mi
38:55
Rank: #1425 (-183)
5K → 10K
19:32 | 6:17/mi
15K· 9.32 mi
58:37
Rank: #1535 (-110)
10K → 15K
19:42 | 6:20/mi
20K· 12.43 mi
1:18:40
Rank: #1661 (-126)
15K → 20K
20:03 | 6:27/mi
Half· 13.11 mi
1:22:59
Rank: #1668 (-7)
20K → Half
4:19 | 6:20/mi
25K· 15.53 mi
1:38:35
Rank: #1685 (-17)
Half → 25K
15:36 | 6:26/mi
30K· 18.64 mi
1:59:04
Rank: #1682 (+3)
25K → 30K
20:29 | 6:36/mi
20M
2:07:55
Rank: #1656 (+26)
30K → 20M
8:51 | 6:31/mi
21M
2:14:51
Rank: #1648 (+8)
20M → 21M
6:56 | 6:56/mi
35K· 21.75 mi
2:19:38
Rank: #1641 (+7)
21M → 35K
4:47 | 6:24/mi
23M
2:28:08
Rank: #1683 (-42)
35K → 23M
8:30 | 6:47/mi
24M
2:34:40
Rank: #1690 (-7)
23M → 24M
6:32 | 6:32/mi
40K· 24.85 mi
2:40:36
Rank: #1718 (-28)
24M → 40K
5:56 | 6:56/mi
25.2M
2:43:07
Rank: #1724 (-6)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:49:49
Rank: #1749 (-25)
25.2M → Finish
6:42 | 6:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:59
Pace6:20 /mi
2nd Half
Distance13.11 mi
Time1:26:50
Pace6:37 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:0319:236:1419:23
6:14
-
10K
6.21 mi10:40:3538:556:1619:32
6:17
+0:03
15K
9.32 mi11:00:1758:376:1719:42
6:20
+0:03
20K
12.43 mi11:20:201:18:406:2020:03
6:27
+0:07
Half
13.11 mi11:24:391:22:596:204:19
6:20
-0:07
25K
15.53 mi11:40:151:38:356:2115:36
6:26
+0:06
30K
18.64 mi12:00:441:59:046:2320:29
6:36
+0:10
20M
20.00 mi12:09:352:07:556:248:51
6:31
-0:05
21M
21.00 mi12:16:312:14:516:256:56
6:56
+0:25
35K
21.75 mi12:21:182:19:386:254:47
6:24
-0:32
23M
23.00 mi12:29:482:28:086:268:30
6:47
+0:23
24M
24.00 mi12:36:202:34:406:276:32
6:32
-0:15
40K
24.85 mi12:42:162:40:366:285:56
6:56
+0:24
25.2M
25.20 mi12:44:472:43:076:282:31
7:18
+0:22
Finish
26.22 mi12:51:292:49:496:296:42
6:34
-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

6:14 /mi

Average Pace

6:29 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:26

91% of race

Time at Steady Pace

15:23

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:29 /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 mi10:21:0319:236:1419:23
6:14
#1242
10K
6.21 mi10:40:3538:556:1619:32
6:17
#1425
15K
9.32 mi11:00:1758:376:1719:42
6:20
#1535
20K
12.43 mi11:20:201:18:406:2020:03
6:27
#1661
Half
13.11 mi11:24:391:22:596:204:19
6:20
#1668
25K
15.53 mi11:40:151:38:356:2115:36
6:26
#1685
30K
18.64 mi12:00:441:59:046:2320:29
6:36
#1682
20M
20.00 mi12:09:352:07:556:248:51
6:31
#1656
21M
21.00 mi12:16:312:14:516:256:56
6:56
#1648
35K
21.75 mi12:21:182:19:386:254:47
6:24
#1641
23M
23.00 mi12:29:482:28:086:268:30
6:47
#1683
24M
24.00 mi12:36:202:34:406:276:32
6:32
#1690
40K
24.85 mi12:42:162:40:366:285:56
6:56
#1718
25.2M
25.20 mi12:44:472:43:076:282:31
7:18
#1724
Finish
26.22 mi12:51:292:49:496:296:42
6:34
#1749
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1242117811781831(Top 7%)1754(Top 12%)1754(Top 33%)
10K6.21 mi3.10 mi1425-1831359-1811359-1811721(Top 6%)1645(Top 11%)1645(Top 31%)
15K9.32 mi3.11 mi1535-1101465-1061465-1061831(Top 7%)1754(Top 12%)1754(Top 33%)
20K12.43 mi3.11 mi1661-1261590-1251590-1252050(Top 8%)1969(Top 13%)1969(Top 37%)
Half13.11 mi0.68 mi1668-71596-61596-61874(Top 7%)1799(Top 12%)1799(Top 34%)
25K15.53 mi2.42 mi1685-171613-171613-171872(Top 7%)1794(Top 12%)1794(Top 34%)
30K18.64 mi3.11 mi1682+31607+61607+61924(Top 7%)1840(Top 12%)1840(Top 35%)
20M20.00 mi1.36 mi1656+261583+241583+241489(Top 6%)1418(Top 9%)1418(Top 27%)
21M21.00 mi1.00 mi1648+81575+81575+81879(Top 7%)1785(Top 12%)1785(Top 34%)
35K21.75 mi0.75 mi1641+71569+61569+61933(Top 7%)1837(Top 12%)1837(Top 35%)
23M23.00 mi1.25 mi1683-421610-411610-412560(Top 10%)2401(Top 16%)2401(Top 45%)
24M24.00 mi1.00 mi1690-71617-71617-72219(Top 8%)2077(Top 14%)2077(Top 39%)
40K24.85 mi0.85 mi1718-281642-251642-253493(Top 13%)3172(Top 21%)3172(Top 60%)
25.2M25.20 mi0.35 mi1724-61648-61648-62859(Top 11%)2614(Top 17%)2614(Top 49%)
Finish26.22 mi1.02 mi1749-251670-221670-222829(Top 11%)2566(Top 17%)2566(Top 49%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1831

Males

1754

M18-39

1754

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1721

Males

1645

M18-39

1645

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1831

Males

1754

M18-39

1754

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2050

Males

1969

M18-39

1969

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1874

Males

1799

M18-39

1799

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1872

Males

1794

M18-39

1794

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1924

Males

1840

M18-39

1840

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1489

Males

1418

M18-39

1418

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1879

Males

1785

M18-39

1785

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1933

Males

1837

M18-39

1837

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2560

Males

2401

M18-39

2401

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2219

Males

2077

M18-39

2077

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3493

Males

3172

M18-39

3172

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2859

Males

2614

M18-39

2614

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2829

Males

2566

M18-39

2566

Passing Analysis

Category:
Athletes Passed
323
Passed By
830
Net Change
-507
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1242
5K → 10K25208-183#1242#1425
10K → 15K18128-110#1425#1535
15K → 20K15141-126#1535#1661
20K → Half916-7#1661#1668
Half → 25K3047-17#1668#1685
25K → 30K5350+3#1685#1682
30K → 20M3610+26#1682#1656
20M → 21M2719+8#1656#1648
21M → 35K1912+7#1648#1641
35K → 23M1860-42#1641#1683
23M → 24M1724-7#1683#1690
24M → 40K2048-28#1690#1718
40K → 25.2M1420-6#1718#1724
25.2M → Finish2247-25#1724#1749
TOTALS323830-507
📊

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