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BOSTON MARATHON 2023

James Sung

Bib: 9555•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 28%
Masters (Masters Men)
#0 / 9891
Top 14%
Division (M45-49)
#0 / 2252
Top 17%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:53
Rank: #6504
Start → 5K
21:53 | 7:03/mi
10K· 6.21 mi
43:03
Rank: #6026 (+478)
5K → 10K
21:10 | 6:49/mi
15K· 9.32 mi
1:04:14
Rank: #5784 (+242)
10K → 15K
21:11 | 6:49/mi
20K· 12.43 mi
1:25:36
Rank: #5614 (+170)
15K → 20K
21:22 | 6:53/mi
Half· 13.11 mi
1:30:12
Rank: #5577 (+37)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:46:49
Rank: #5417 (+160)
Half → 25K
16:37 | 6:51/mi
30K· 18.64 mi
2:08:28
Rank: #5094 (+323)
25K → 30K
21:39 | 6:58/mi
20M
2:18:01
Rank: #4987 (+107)
30K → 20M
9:33 | 7:02/mi
21M
2:25:20
Rank: #4886 (+101)
20M → 21M
7:19 | 7:19/mi
35K· 21.75 mi
2:30:27
Rank: #4848 (+38)
21M → 35K
5:07 | 6:50/mi
23M
2:39:17
Rank: #4754 (+94)
35K → 23M
8:50 | 7:03/mi
24M
2:46:08
Rank: #4679 (+75)
23M → 24M
6:51 | 6:51/mi
40K· 24.85 mi
2:52:06
Rank: #4629 (+50)
24M → 40K
5:58 | 6:59/mi
25.2M
2:54:46
Rank: #4622 (+7)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:01:31
Rank: #4520 (+102)
25.2M → Finish
6:45 | 6:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:12
Pace6:53 /mi
2nd Half
Distance13.11 mi
Time1:31:19
Pace6:58 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:4221:537:0321:53
7:03
-
10K
6.21 mi11:08:5243:036:5621:10
6:49
-0:14
15K
9.32 mi11:30:031:04:146:5321:11
6:49
0:00
20K
12.43 mi11:51:251:25:366:5321:22
6:53
+0:04
Half
13.11 mi11:56:011:30:126:534:36
6:45
-0:08
25K
15.53 mi12:12:381:46:496:5316:37
6:51
+0:06
30K
18.64 mi12:34:172:08:286:5321:39
6:58
+0:07
20M
20.00 mi12:43:502:18:016:549:33
7:02
+0:04
21M
21.00 mi12:51:092:25:206:557:19
7:19
+0:17
35K
21.75 mi12:56:162:30:276:555:07
6:50
-0:29
23M
23.00 mi13:05:062:39:176:568:50
7:03
+0:13
24M
24.00 mi13:11:572:46:086:556:51
6:51
-0:12
40K
24.85 mi13:17:552:52:066:555:58
6:59
+0:08
25.2M
25.20 mi13:20:352:54:466:562:40
7:44
+0:45
Finish
26.22 mi13:27:203:01:316:566:45
6:37
-1:07

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

6:37 /mi

Average Pace

6:56 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:32

95% of race

Time at Steady Pace

9:59

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:55 /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 mi10:47:4221:537:0321:53
7:03
#6504
10K
6.21 mi11:08:5243:036:5621:10
6:49
#6026
15K
9.32 mi11:30:031:04:146:5321:11
6:49
#5784
20K
12.43 mi11:51:251:25:366:5321:22
6:53
#5614
Half
13.11 mi11:56:011:30:126:534:36
6:45
#5577
25K
15.53 mi12:12:381:46:496:5316:37
6:51
#5417
30K
18.64 mi12:34:172:08:286:5321:39
6:58
#5094
20M
20.00 mi12:43:502:18:016:549:33
7:02
#4987
21M
21.00 mi12:51:092:25:206:557:19
7:19
#4886
35K
21.75 mi12:56:162:30:276:555:07
6:50
#4848
23M
23.00 mi13:05:062:39:176:568:50
7:03
#4754
24M
24.00 mi13:11:572:46:086:556:51
6:51
#4679
40K
24.85 mi13:17:552:52:066:555:58
6:59
#4629
25.2M
25.20 mi13:20:352:54:466:562:40
7:44
#4622
Finish
26.22 mi13:27:203:01:316:566:45
6:37
#4520
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi6504588858885284(Top 20%)4881(Top 32%)4881(Top 217%)
10K6.21 mi3.10 mi6026+4785508+3805508+3805408(Top 20%)4985(Top 33%)4985(Top 221%)
15K9.32 mi3.11 mi5784+2425309+1995309+1995284(Top 20%)4881(Top 32%)4881(Top 217%)
20K12.43 mi3.11 mi5614+1705172+1375172+1375160(Top 19%)4770(Top 31%)4770(Top 212%)
Half13.11 mi0.68 mi5577+375143+295143+294742(Top 18%)4404(Top 29%)4404(Top 196%)
25K15.53 mi2.42 mi5417+1605003+1405003+1404612(Top 17%)4291(Top 28%)4291(Top 191%)
30K18.64 mi3.11 mi5094+3234720+2834720+2834146(Top 16%)3867(Top 25%)3867(Top 172%)
20M20.00 mi1.36 mi4987+1074625+954625+954206(Top 16%)3885(Top 26%)3885(Top 173%)
21M21.00 mi1.00 mi4886+1014538+874538+873709(Top 14%)3440(Top 23%)3440(Top 153%)
35K21.75 mi0.75 mi4848+384502+364502+364439(Top 17%)4057(Top 27%)4057(Top 180%)
23M23.00 mi1.25 mi4754+944416+864416+864064(Top 15%)3740(Top 25%)3740(Top 166%)
24M24.00 mi1.00 mi4679+754350+664350+663943(Top 15%)3602(Top 24%)3602(Top 160%)
40K24.85 mi0.85 mi4629+504304+464304+463738(Top 14%)3379(Top 22%)3379(Top 150%)
25.2M25.20 mi0.35 mi4622+74294+104294+104978(Top 19%)4255(Top 28%)4255(Top 189%)
Finish26.22 mi1.02 mi4520+1024200+944200+943124(Top 12%)2819(Top 19%)2819(Top 125%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5284

Males

4881

M45-49

4881

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5408

Males

4985

M45-49

4985

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5284

Males

4881

M45-49

4881

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5160

Males

4770

M45-49

4770

20K→Half

12.4 - 13.1 mi

Top 18%
×2stories
+19ft-37ft

Overall

4742

Males

4404

M45-49

4404

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4612

Males

4291

M45-49

4291

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4146

Males

3867

M45-49

3867

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4206

Males

3885

M45-49

3885

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

3709

Males

3440

M45-49

3440

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4439

Males

4057

M45-49

4057

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

4064

Males

3740

M45-49

3740

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

3943

Males

3602

M45-49

3602

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3738

Males

3379

M45-49

3379

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

4978

Males

4255

M45-49

4255

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3124

Males

2819

M45-49

2819

Passing Analysis

Category:
Athletes Passed
2271
Passed By
287
Net Change
+1984
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6504
5K → 10K52042+478#6504#6026
10K → 15K28543+242#6026#5784
15K → 20K20030+170#5784#5614
20K → Half4912+37#5614#5577
Half → 25K17313+160#5577#5417
25K → 30K33714+323#5417#5094
30K → 20M12619+107#5094#4987
20M → 21M11716+101#4987#4886
21M → 35K5719+38#4886#4848
35K → 23M11824+94#4848#4754
23M → 24M9318+75#4754#4679
24M → 40K6515+50#4679#4629
40K → 25.2M2316+7#4629#4622
25.2M → Finish1086+102#4622#4520
TOTALS2271287+1984
📊

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