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BOSTON MARATHON 2023

Jason Bui

Bib: 5232•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 15%
Gender (Male)
#0 / 15176
Top 25%
Masters (Masters Men)
#0 / 9891
Top 12%
Division (M40-44)
#0 / 2241
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
21:00
Rank: #4276
Start → 5K
21:00 | 6:46/mi
10K· 6.21 mi
41:36
Rank: #3939 (+337)
5K → 10K
20:36 | 6:38/mi
15K· 9.32 mi
1:02:26
Rank: #4012 (-73)
10K → 15K
20:50 | 6:42/mi
20K· 12.43 mi
1:23:24
Rank: #3984 (+28)
15K → 20K
20:58 | 6:45/mi
Half· 13.11 mi
1:27:58
Rank: #3991 (-7)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:44:26
Rank: #3996 (-5)
Half → 25K
16:28 | 6:47/mi
30K· 18.64 mi
2:05:56
Rank: #3907 (+89)
25K → 30K
21:30 | 6:55/mi
20M
2:15:31
Rank: #3938 (-31)
30K → 20M
9:35 | 7:03/mi
21M
2:22:50
Rank: #3883 (+55)
20M → 21M
7:19 | 7:19/mi
35K· 21.75 mi
2:27:59
Rank: #3917 (-34)
21M → 35K
5:09 | 6:53/mi
23M
2:36:55
Rank: #3954 (-37)
35K → 23M
8:56 | 7:08/mi
24M
2:43:51
Rank: #3979 (-25)
23M → 24M
6:56 | 6:56/mi
40K· 24.85 mi
2:49:56
Rank: #4002 (-23)
24M → 40K
6:05 | 7:07/mi
25.2M
2:52:31
Rank: #4000 (+2)
40K → 25.2M
2:35 | 7:29/mi
Finish· 26.22 mi
2:59:29
Rank: #4029 (-29)
25.2M → Finish
6:58 | 6:50/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:58
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:31:31
Pace6:59 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3321:006:4621:00
6:46
-
10K
6.21 mi10:44:0941:366:4220:36
6:38
-0:08
15K
9.32 mi11:04:591:02:266:4220:50
6:42
+0:04
20K
12.43 mi11:25:571:23:246:4320:58
6:45
+0:03
Half
13.11 mi11:30:311:27:586:434:34
6:42
-0:03
25K
15.53 mi11:46:591:44:266:4316:28
6:47
+0:05
30K
18.64 mi12:08:292:05:566:4521:30
6:55
+0:08
20M
20.00 mi12:18:042:15:316:479:35
7:03
+0:08
21M
21.00 mi12:25:232:22:506:487:19
7:19
+0:16
35K
21.75 mi12:30:322:27:596:485:09
6:53
-0:26
23M
23.00 mi12:39:282:36:556:498:56
7:08
+0:15
24M
24.00 mi12:46:242:43:516:506:56
6:56
-0:12
40K
24.85 mi12:52:292:49:566:506:05
7:07
+0:11
25.2M
25.20 mi12:55:042:52:316:512:35
7:29
+0:22
Finish
26.22 mi13:02:022:59:296:516:58
6:50
-0:39

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

6:38 /mi

Average Pace

6:51 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:49:35

94% of race

Time at Steady Pace

9:54

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:51 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:23:3321:006:4621:00
6:46
#4276
10K
6.21 mi10:44:0941:366:4220:36
6:38
#3939
15K
9.32 mi11:04:591:02:266:4220:50
6:42
#4012
20K
12.43 mi11:25:571:23:246:4320:58
6:45
#3984
Half
13.11 mi11:30:311:27:586:434:34
6:42
#3991
25K
15.53 mi11:46:591:44:266:4316:28
6:47
#3996
30K
18.64 mi12:08:292:05:566:4521:30
6:55
#3907
20M
20.00 mi12:18:042:15:316:479:35
7:03
#3938
21M
21.00 mi12:25:232:22:506:487:19
7:19
#3883
35K
21.75 mi12:30:322:27:596:485:09
6:53
#3917
23M
23.00 mi12:39:282:36:556:498:56
7:08
#3954
24M
24.00 mi12:46:242:43:516:506:56
6:56
#3979
40K
24.85 mi12:52:292:49:566:506:05
7:07
#4002
25.2M
25.20 mi12:55:042:52:316:512:35
7:29
#4000
Finish
26.22 mi13:02:022:59:296:516:58
6:50
#4029
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4276399439944216(Top 16%)3953(Top 26%)3953(Top 176%)
10K6.21 mi3.10 mi3939+3373708+2863708+2863747(Top 14%)3534(Top 23%)3534(Top 158%)
15K9.32 mi3.11 mi4012-733774-663774-664216(Top 16%)3953(Top 26%)3953(Top 176%)
20K12.43 mi3.11 mi3984+283749+253749+253988(Top 15%)3743(Top 25%)3743(Top 167%)
Half13.11 mi0.68 mi3991-73751-23751-24402(Top 17%)4094(Top 27%)4094(Top 183%)
25K15.53 mi2.42 mi3996-53759-83759-84099(Top 15%)3840(Top 25%)3840(Top 171%)
30K18.64 mi3.11 mi3907+893683+763683+763812(Top 14%)3571(Top 24%)3571(Top 159%)
20M20.00 mi1.36 mi3938-313706-233706-234376(Top 16%)4025(Top 27%)4025(Top 180%)
21M21.00 mi1.00 mi3883+553655+513655+513736(Top 14%)3461(Top 23%)3461(Top 154%)
35K21.75 mi0.75 mi3917-343683-283683-284745(Top 18%)4281(Top 28%)4281(Top 191%)
23M23.00 mi1.25 mi3954-373709-263709-264515(Top 17%)4088(Top 27%)4088(Top 182%)
24M24.00 mi1.00 mi3979-253726-173726-174381(Top 16%)3956(Top 26%)3956(Top 177%)
40K24.85 mi0.85 mi4002-233747-213747-214488(Top 17%)3971(Top 26%)3971(Top 177%)
25.2M25.20 mi0.35 mi4000+23746+13746+13967(Top 15%)3510(Top 23%)3510(Top 157%)
Finish26.22 mi1.02 mi4029-293770-243770-244317(Top 16%)3775(Top 25%)3775(Top 168%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4216

Males

3953

M40-44

3953

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3747

Males

3534

M40-44

3534

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4216

Males

3953

M40-44

3953

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

3988

Males

3743

M40-44

3743

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4402

Males

4094

M40-44

4094

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4099

Males

3840

M40-44

3840

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3812

Males

3571

M40-44

3571

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4376

Males

4025

M40-44

4025

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

3736

Males

3461

M40-44

3461

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

4745

Males

4281

M40-44

4281

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4515

Males

4088

M40-44

4088

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4381

Males

3956

M40-44

3956

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4488

Males

3971

M40-44

3971

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

3967

Males

3510

M40-44

3510

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4317

Males

3775

M40-44

3775

Passing Analysis

Category:
Athletes Passed
1262
Passed By
1015
Net Change
+247
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4276
5K → 10K440103+337#4276#3939
10K → 15K85158-73#3939#4012
15K → 20K12294+28#4012#3984
20K → Half1522-7#3984#3991
Half → 25K7681-5#3991#3996
25K → 30K15465+89#3996#3907
30K → 20M5485-31#3907#3938
20M → 21M9540+55#3938#3883
21M → 35K2458-34#3883#3917
35K → 23M5087-37#3917#3954
23M → 24M4469-25#3954#3979
24M → 40K4063-23#3979#4002
40K → 25.2M2422+2#4002#4000
25.2M → Finish3968-29#4000#4029
TOTALS12621015+247
📊

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