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BOSTON MARATHON 2023

Se Hee Jung

Bib: 20465•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:51
Rank: #20293
Start → 5K
27:51 | 8:58/mi
10K· 6.21 mi
55:30
Rank: #20358 (-65)
5K → 10K
27:39 | 8:54/mi
15K· 9.32 mi
1:23:45
Rank: #20506 (-148)
10K → 15K
28:15 | 9:06/mi
20K· 12.43 mi
1:52:52
Rank: #20696 (-190)
15K → 20K
29:07 | 9:22/mi
Half· 13.11 mi
1:59:14
Rank: #20758 (-62)
20K → Half
6:22 | 9:20/mi
25K· 15.53 mi
2:22:53
Rank: #20922 (-164)
Half → 25K
23:39 | 9:45/mi
30K· 18.64 mi
2:54:51
Rank: #21108 (-186)
25K → 30K
31:58 | 10:17/mi
20M
3:08:44
Rank: #21083 (+25)
30K → 20M
13:53 | 10:13/mi
21M
3:19:36
Rank: #21041 (+42)
20M → 21M
10:52 | 10:52/mi
35K· 21.75 mi
3:27:21
Rank: #21090 (-49)
21M → 35K
7:45 | 10:22/mi
23M
3:40:55
Rank: #21152 (-62)
35K → 23M
13:34 | 10:50/mi
24M
3:51:42
Rank: #21223 (-71)
23M → 24M
10:47 | 10:47/mi
40K· 24.85 mi
4:01:05
Rank: #21276 (-53)
24M → 40K
9:23 | 10:58/mi
25.2M
4:05:06
Rank: #21282 (-6)
40K → 25.2M
4:01 | 11:39/mi
Finish· 26.22 mi
4:15:55
Rank: #21377 (-95)
25.2M → Finish
10:49 | 10:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:14
Pace9:06 /mi
2nd Half
Distance13.11 mi
Time2:16:41
Pace10:26 /mi
📊Positive Split: 14.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:0727:518:5827:51
8:58
-
10K
6.21 mi11:47:4655:308:5627:39
8:54
-0:04
15K
9.32 mi12:16:011:23:458:5928:15
9:06
+0:12
20K
12.43 mi12:45:081:52:529:0529:07
9:22
+0:16
Half
13.11 mi12:51:301:59:149:066:22
9:20
-0:02
25K
15.53 mi13:15:092:22:539:1223:39
9:45
+0:25
30K
18.64 mi13:47:072:54:519:2331:58
10:17
+0:32
20M
20.00 mi14:01:003:08:449:2613:53
10:13
-0:04
21M
21.00 mi14:11:523:19:369:3010:52
10:52
+0:39
35K
21.75 mi14:19:373:27:219:327:45
10:22
-0:30
23M
23.00 mi14:33:113:40:559:3613:34
10:50
+0:28
24M
24.00 mi14:43:583:51:429:3910:47
10:47
-0:03
40K
24.85 mi14:53:214:01:059:429:23
10:58
+0:11
25.2M
25.20 mi14:57:224:05:069:444:01
11:39
+0:41
Finish
26.22 mi15:08:114:15:559:4610:49
10:37
-1:02

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

8:54 /mi

Average Pace

9:46 /mi

Slowest Pace

11:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22:53

56% of race

Time at Steady Pace

1:04:25

25% of race

Time at Slower Pace

48:37

19% of race

Average Pace: 9:46 /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 mi11:20:0727:518:5827:51
8:58
#20293
10K
6.21 mi11:47:4655:308:5627:39
8:54
#20358
15K
9.32 mi12:16:011:23:458:5928:15
9:06
#20506
20K
12.43 mi12:45:081:52:529:0529:07
9:22
#20696
Half
13.11 mi12:51:301:59:149:066:22
9:20
#20758
25K
15.53 mi13:15:092:22:539:1223:39
9:45
#20922
30K
18.64 mi13:47:072:54:519:2331:58
10:17
#21108
20M
20.00 mi14:01:003:08:449:2613:53
10:13
#21083
21M
21.00 mi14:11:523:19:369:3010:52
10:52
#21041
35K
21.75 mi14:19:373:27:219:327:45
10:22
#21090
23M
23.00 mi14:33:113:40:559:3613:34
10:50
#21152
24M
24.00 mi14:43:583:51:429:3910:47
10:47
#21223
40K
24.85 mi14:53:214:01:059:429:23
10:58
#21276
25.2M
25.20 mi14:57:224:05:069:444:01
11:39
#21282
Finish
26.22 mi15:08:114:15:559:4610:49
10:37
#21377
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi202938000800020927(Top 79%)8198(Top 72%)8198(Top 451%)
10K6.21 mi3.10 mi20358-657955+457955+4520429(Top 77%)7942(Top 70%)7942(Top 437%)
15K9.32 mi3.11 mi20506-1488018-638018-6320927(Top 79%)8198(Top 72%)8198(Top 451%)
20K12.43 mi3.11 mi20696-1908103-858103-8521172(Top 80%)8329(Top 73%)8329(Top 458%)
Half13.11 mi0.68 mi20758-628139-368139-3621646(Top 81%)8598(Top 75%)8598(Top 473%)
25K15.53 mi2.42 mi20922-1648217-788217-7821621(Top 81%)8627(Top 76%)8627(Top 475%)
30K18.64 mi3.11 mi21108-1868341-1248341-12421752(Top 82%)8762(Top 77%)8762(Top 482%)
20M20.00 mi1.36 mi21083+258347-68347-621073(Top 79%)8451(Top 74%)8451(Top 465%)
21M21.00 mi1.00 mi21041+428340+78340+720541(Top 77%)8214(Top 72%)8214(Top 452%)
35K21.75 mi0.75 mi21090-498374-348374-3422133(Top 83%)9125(Top 80%)9125(Top 502%)
23M23.00 mi1.25 mi21152-628419-458419-4522036(Top 83%)9091(Top 80%)9091(Top 500%)
24M24.00 mi1.00 mi21223-718466-478466-4722635(Top 85%)9439(Top 83%)9439(Top 519%)
40K24.85 mi0.85 mi21276-538502-368502-3622300(Top 84%)9296(Top 81%)9296(Top 512%)
25.2M25.20 mi0.35 mi21282-68508-68508-621874(Top 82%)9058(Top 79%)9058(Top 499%)
Finish26.22 mi1.02 mi21377-958574-668574-6623245(Top 87%)9769(Top 86%)9769(Top 538%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

20927

Females

8198

F45-49

8198

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

20429

Females

7942

F45-49

7942

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

20927

Females

8198

F45-49

8198

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

21172

Females

8329

F45-49

8329

20K→Half

12.4 - 13.1 mi

Top 81%
×2stories
+19ft-37ft

Overall

21646

Females

8598

F45-49

8598

Half→25K

13.1 - 15.5 mi

Top 81%
×4stories
+66ft-88ft

Overall

21621

Females

8627

F45-49

8627

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

21752

Females

8762

F45-49

8762

30K→20M

18.6 - 20.0 mi

Top 79%
×5stories
+64ft-50ft

Overall

21073

Females

8451

F45-49

8451

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

20541

Females

8214

F45-49

8214

21M→35K

21.0 - 21.8 mi

Top 83%
×7stories
+17ft-86ft

Overall

22133

Females

9125

F45-49

9125

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

22036

Females

9091

F45-49

9091

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

22635

Females

9439

F45-49

9439

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

22300

Females

9296

F45-49

9296

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21874

Females

9058

F45-49

9058

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2stories
+22ft-21ft

Overall

23245

Females

9769

F45-49

9769

Passing Analysis

Category:
Athletes Passed
966
Passed By
2050
Net Change
-1084
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20293
5K → 10K269334-65#20293#20358
10K → 15K129277-148#20358#20506
15K → 20K103293-190#20506#20696
20K → Half1274-62#20696#20758
Half → 25K52216-164#20758#20922
25K → 30K89275-186#20922#21108
30K → 20M7853+25#21108#21083
20M → 21M8947+42#21083#21041
21M → 35K2473-49#21041#21090
35K → 23M38100-62#21090#21152
23M → 24M2798-71#21152#21223
24M → 40K3184-53#21223#21276
40K → 25.2M1824-6#21276#21282
25.2M → Finish7102-95#21282#21377
TOTALS9662050-1084
📊

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