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BOSTON MARATHON 2023

Seung Lee

Bib: 21382•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 42%
Masters (Masters Women)
#0 / 6539
Top 30%
Division (F50-54)
#0 / 1207
Top 21%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:27
Rank: #17644
Start → 5K
26:27 | 8:31/mi
10K· 6.21 mi
52:41
Rank: #17777 (-133)
5K → 10K
26:14 | 8:27/mi
15K· 9.32 mi
1:18:30
Rank: #17339 (+438)
10K → 15K
25:49 | 8:19/mi
20K· 12.43 mi
1:44:22
Rank: #16926 (+413)
15K → 20K
25:52 | 8:20/mi
Half· 13.11 mi
1:49:57
Rank: #16860 (+66)
20K → Half
5:35 | 8:11/mi
25K· 15.53 mi
2:10:06
Rank: #16578 (+282)
Half → 25K
20:09 | 8:19/mi
30K· 18.64 mi
2:36:28
Rank: #16110 (+468)
25K → 30K
26:22 | 8:29/mi
20M
2:47:56
Rank: #15881 (+229)
30K → 20M
11:28 | 8:26/mi
21M
2:56:53
Rank: #15680 (+201)
20M → 21M
8:57 | 8:57/mi
35K· 21.75 mi
3:03:07
Rank: #15624 (+56)
21M → 35K
6:14 | 8:20/mi
23M
3:13:32
Rank: #15394 (+230)
35K → 23M
10:25 | 8:19/mi
24M
3:21:46
Rank: #15256 (+138)
23M → 24M
8:14 | 8:14/mi
40K· 24.85 mi
3:28:49
Rank: #15125 (+131)
24M → 40K
7:03 | 8:15/mi
25.2M
3:31:45
Rank: #15023 (+102)
40K → 25.2M
2:56 | 8:30/mi
Finish· 26.22 mi
3:39:44
Rank: #14871 (+152)
25.2M → Finish
7:59 | 7:50/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:49:57
Pace8:23 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:49:47
Pace8:22 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:2726:278:3126:27
8:31
-
10K
6.21 mi11:45:4152:418:2926:14
8:27
-0:04
15K
9.32 mi12:11:301:18:308:2525:49
8:19
-0:08
20K
12.43 mi12:37:221:44:228:2425:52
8:20
+0:01
Half
13.11 mi12:42:571:49:578:235:35
8:11
-0:09
25K
15.53 mi13:03:062:10:068:2320:09
8:19
+0:08
30K
18.64 mi13:29:282:36:288:2426:22
8:29
+0:10
20M
20.00 mi13:40:562:47:568:2411:28
8:26
-0:03
21M
21.00 mi13:49:532:56:538:258:57
8:57
+0:31
35K
21.75 mi13:56:073:03:078:256:14
8:20
-0:37
23M
23.00 mi14:06:323:13:328:2510:25
8:19
-0:01
24M
24.00 mi14:14:463:21:468:248:14
8:14
-0:05
40K
24.85 mi14:21:493:28:498:247:03
8:15
+0:01
25.2M
25.20 mi14:24:453:31:458:242:56
8:30
+0:15
Finish
26.22 mi14:32:443:39:448:237:59
7:50
-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

7:50 /mi

Average Pace

8:23 /mi

Slowest Pace

8:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:30:47

96% of race

Time at Steady Pace

8:57

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:23 /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 mi11:19:2726:278:3126:27
8:31
#17644
10K
6.21 mi11:45:4152:418:2926:14
8:27
#17777
15K
9.32 mi12:11:301:18:308:2525:49
8:19
#17339
20K
12.43 mi12:37:221:44:228:2425:52
8:20
#16926
Half
13.11 mi12:42:571:49:578:235:35
8:11
#16860
25K
15.53 mi13:03:062:10:068:2320:09
8:19
#16578
30K
18.64 mi13:29:282:36:288:2426:22
8:29
#16110
20M
20.00 mi13:40:562:47:568:2411:28
8:26
#15881
21M
21.00 mi13:49:532:56:538:258:57
8:57
#15680
35K
21.75 mi13:56:073:03:078:256:14
8:20
#15624
23M
23.00 mi14:06:323:13:328:2510:25
8:19
#15394
24M
24.00 mi14:14:463:21:468:248:14
8:14
#15256
40K
24.85 mi14:21:493:28:498:247:03
8:15
#15125
25.2M
25.20 mi14:24:453:31:458:242:56
8:30
#15023
Finish
26.22 mi14:32:443:39:448:237:59
7:50
#14871
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi176446336633616594(Top 62%)5660(Top 50%)5660(Top 469%)
10K6.21 mi3.10 mi17777-1336385-496385-4917894(Top 67%)6415(Top 56%)6415(Top 531%)
15K9.32 mi3.11 mi17339+4386121+2646121+26416594(Top 62%)5660(Top 50%)5660(Top 469%)
20K12.43 mi3.11 mi16926+4135881+2405881+24015769(Top 59%)5204(Top 46%)5204(Top 431%)
Half13.11 mi0.68 mi16860+665836+455836+4515715(Top 59%)5121(Top 45%)5121(Top 424%)
25K15.53 mi2.42 mi16578+2825682+1545682+15415037(Top 56%)4865(Top 43%)4865(Top 403%)
30K18.64 mi3.11 mi16110+4685440+2425440+24214242(Top 53%)4480(Top 39%)4480(Top 371%)
20M20.00 mi1.36 mi15881+2295329+1115329+11113289(Top 50%)4021(Top 35%)4021(Top 333%)
21M21.00 mi1.00 mi15680+2015232+975232+9713152(Top 49%)4033(Top 35%)4033(Top 334%)
35K21.75 mi0.75 mi15624+565211+215211+2114323(Top 54%)4740(Top 41%)4740(Top 393%)
23M23.00 mi1.25 mi15394+2305093+1185093+11812078(Top 45%)3567(Top 31%)3567(Top 296%)
24M24.00 mi1.00 mi15256+1385013+805013+8012876(Top 48%)4075(Top 36%)4075(Top 338%)
40K24.85 mi0.85 mi15125+1314950+634950+6311723(Top 44%)3535(Top 31%)3535(Top 293%)
25.2M25.20 mi0.35 mi15023+1024903+474903+479705(Top 36%)2588(Top 23%)2588(Top 214%)
Finish26.22 mi1.02 mi14871+1524831+724831+7210986(Top 41%)3194(Top 28%)3194(Top 265%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21stories
+97ft-345ft

Overall

16594

Females

5660

F50-54

5660

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

17894

Females

6415

F50-54

6415

10K→15K

6.2 - 9.3 mi

Top 62%
×3stories
+67ft-78ft

Overall

16594

Females

5660

F50-54

5660

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

15769

Females

5204

F50-54

5204

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

15715

Females

5121

F50-54

5121

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

15037

Females

4865

F50-54

4865

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

14242

Females

4480

F50-54

4480

30K→20M

18.6 - 20.0 mi

Top 50%
×5stories
+64ft-50ft

Overall

13289

Females

4021

F50-54

4021

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

13152

Females

4033

F50-54

4033

21M→35K

21.0 - 21.8 mi

Top 54%
×7stories
+17ft-86ft

Overall

14323

Females

4740

F50-54

4740

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

12078

Females

3567

F50-54

3567

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

12876

Females

4075

F50-54

4075

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11723

Females

3535

F50-54

3535

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9705

Females

2588

F50-54

2588

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2stories
+22ft-21ft

Overall

10986

Females

3194

F50-54

3194

Passing Analysis

Category:
Athletes Passed
3353
Passed By
580
Net Change
+2773
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17644
5K → 10K253386-133#17644#17777
10K → 15K48749+438#17777#17339
15K → 20K44532+413#17339#16926
20K → Half737+66#16926#16860
Half → 25K30018+282#16860#16578
25K → 30K48618+468#16578#16110
30K → 20M2378+229#16110#15881
20M → 21M21211+201#15881#15680
21M → 35K7014+56#15680#15624
35K → 23M2366+230#15624#15394
23M → 24M15315+138#15394#15256
24M → 40K1398+131#15256#15125
40K → 25.2M1020+102#15125#15023
25.2M → Finish1608+152#15023#14871
TOTALS3353580+2773
📊

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