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BOSTON MARATHON 2023

Ji Yeon Jung

Bib: 31737•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
12:15/mi
38:03
↑ 97↓ 3451.5%
10K· 6.21 mi
12:00/mi
1:15:20
↑ 79↓ 1380.4%
15K· 9.32 mi
12:07/mi
1:52:58
↑ 67↓ 78
20K· 12.43 mi
11:32/mi
2:28:48
↑ 106↓ 860.1%
Half· 13.11 mi
11:54/mi
2:36:55
↑ 19↓ 370.5%
25K· 15.53 mi
12:45/mi
3:07:49
↑ 66↓ 880.2%
30K· 18.64 mi
12:07/mi
3:45:28
↑ 181↓ 1480.2%
20M
11:45/mi
4:01:26
↑ 64↓ 500.2%
21M
13:44/mi
4:15:10
↑ 106↓ 241.6%
35K· 21.75 mi
13:10/mi
4:25:01
↑ 17↓ 861.7%
23M
11:46/mi
4:39:45
↑ 23↓ 630.6%
24M
10:46/mi
4:50:31
↓ 821.3%
40K· 24.85 mi
10:58/mi
4:59:54
↓ 200.3%
25.2M
12:31/mi
5:04:13
↑ 13↓ 160.2%
Finish· 26.22 mi
11:47/mi
5:16:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:36:55
Pace11:58 /mi
2nd Half
Distance13.11 mi
Time2:39:18
Pace12:09 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:59:4538:0312:1538:03
12:15
-
10K
6.21 mi12:37:021:15:2012:0737:17
12:00
-0:15
15K
9.32 mi13:14:401:52:5812:0737:38
12:07
+0:07
20K
12.43 mi13:50:302:28:4811:5835:50
11:32
-0:35
Half
13.11 mi13:58:372:36:5511:588:07
11:54
+0:22
25K
15.53 mi14:29:313:07:4912:0530:54
12:45
+0:51
30K
18.64 mi15:07:103:45:2812:0637:39
12:07
-0:38
20M
20.00 mi15:23:084:01:2612:0415:58
11:45
-0:22
21M
21.00 mi15:36:524:15:1012:0913:44
13:44
+1:59
35K
21.75 mi15:46:434:25:0112:119:51
13:10
-0:34
23M
23.00 mi16:01:274:39:4512:1014:44
11:46
-1:24
24M
24.00 mi16:12:134:50:3112:0610:46
10:46
-1:00
40K
24.85 mi16:21:364:59:5412:049:23
10:58
+0:12
25.2M
25.20 mi16:25:555:04:1312:044:19
12:31
+1:33
Finish
26.22 mi16:37:555:16:1312:0412:00
11:47
-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

10:46 /mi

Average Pace

12:04 /mi

Slowest Pace

13:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

55:59

18% of race

Time at Steady Pace

3:21:26

64% of race

Time at Slower Pace

58:48

19% of race

Average Pace: 12:04 /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 mi11:59:4538:0312:1538:03
12:15
#26495
10K
6.21 mi12:37:021:15:2012:0737:17
12:00
#26420
15K
9.32 mi13:14:401:52:5812:0737:38
12:07
#26350
20K
12.43 mi13:50:302:28:4811:5835:50
11:32
#26141
Half
13.11 mi13:58:372:36:5511:588:07
11:54
#26127
25K
15.53 mi14:29:313:07:4912:0530:54
12:45
#26076
30K
18.64 mi15:07:103:45:2812:0637:39
12:07
#25862
20M
20.00 mi15:23:084:01:2612:0415:58
11:45
#25758
21M
21.00 mi15:36:524:15:1012:0913:44
13:44
#25719
35K
21.75 mi15:46:434:25:0112:119:51
13:10
#25725
23M
23.00 mi16:01:274:39:4512:1014:44
11:46
#25643
24M
24.00 mi16:12:134:50:3112:0610:46
10:46
#25576
40K
24.85 mi16:21:364:59:5412:049:23
10:58
#25497
25.2M
25.20 mi16:25:555:04:1312:044:19
12:31
#25481
Finish
26.22 mi16:37:555:16:1312:0412:00
11:47
#25466
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi26495113541135426130(Top 98%)11119(Top 97%)11119(Top 1364%)
10K6.21 mi3.10 mi26420+7511305+4911305+4926275(Top 99%)11215(Top 98%)11215(Top 1376%)
15K9.32 mi3.11 mi26350+7011262+4311262+4326130(Top 98%)11119(Top 97%)11119(Top 1364%)
20K12.43 mi3.11 mi26141+20911127+13511127+13525287(Top 95%)10649(Top 93%)10649(Top 1307%)
Half13.11 mi0.68 mi26127+1411118+911118+925808(Top 97%)10955(Top 96%)10955(Top 1344%)
25K15.53 mi2.42 mi26076+5111088+3011088+3025718(Top 97%)10916(Top 96%)10916(Top 1339%)
30K18.64 mi3.11 mi25862+21410971+11710971+11724625(Top 92%)10355(Top 91%)10355(Top 1271%)
20M20.00 mi1.36 mi25758+10410920+5110920+5123893(Top 90%)10022(Top 88%)10022(Top 1230%)
21M21.00 mi1.00 mi25719+3910902+1810902+1824817(Top 93%)10515(Top 92%)10515(Top 1290%)
35K21.75 mi0.75 mi25725-610909-710909-725692(Top 97%)10990(Top 96%)10990(Top 1348%)
23M23.00 mi1.25 mi25643+8210870+3910870+3923674(Top 89%)9943(Top 87%)9943(Top 1220%)
24M24.00 mi1.00 mi25576+6710838+3210838+3222624(Top 85%)9438(Top 83%)9438(Top 1158%)
40K24.85 mi0.85 mi25497+7910802+3610802+3622317(Top 84%)9313(Top 82%)9313(Top 1143%)
25.2M25.20 mi0.35 mi25481+1610792+1010792+1023351(Top 88%)9864(Top 86%)9864(Top 1210%)
Finish26.22 mi1.02 mi25466+1510790+210790+225018(Top 94%)10677(Top 93%)10677(Top 1310%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21story building
+97ft-345ft

Overall

26130

Females

11119

F55-59

11119

5K→10K

3.1 - 6.2 mi

Top 99%
×5story building
+79ft-138ft

Overall

26275

Females

11215

F55-59

11215

10K→15K

6.2 - 9.3 mi

Top 98%
×3story building
+67ft-78ft

Overall

26130

Females

11119

F55-59

11119

15K→20K

9.3 - 12.4 mi

Top 95%
×5story building
+106ft-86ft

Overall

25287

Females

10649

F55-59

10649

20K→Half

12.4 - 13.1 mi

Top 97%
×2story building
+19ft-37ft

Overall

25808

Females

10955

F55-59

10955

Half→25K

13.1 - 15.5 mi

Top 97%
×4story building
+66ft-88ft

Overall

25718

Females

10916

F55-59

10916

25K→30K

15.5 - 18.6 mi

Top 92%
×9story building
+181ft-148ft

Overall

24625

Females

10355

F55-59

10355

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

23893

Females

10022

F55-59

10022

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

24817

Females

10515

F55-59

10515

21M→35K

21.0 - 21.8 mi

Top 97%
×7story building
+17ft-86ft

Overall

25692

Females

10990

F55-59

10990

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

23674

Females

9943

F55-59

9943

23M→24M

23.0 - 24.0 mi

Top 85%
×6story building
+12ft-82ft

Overall

22624

Females

9438

F55-59

9438

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

22317

Females

9313

F55-59

9313

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23351

Females

9864

F55-59

9864

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

25018

Females

10677

F55-59

10677

Passing Analysis

Category:
Athletes Passed
1108
Passed By
79
Net Change
+1029
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26495
5K → 10K8611+75#26495#26420
10K → 15K766+70#26420#26350
15K → 20K2090+209#26350#26141
20K → Half195+14#26141#26127
Half → 25K6716+51#26127#26076
25K → 30K2162+214#26076#25862
30K → 20M1040+104#25862#25758
20M → 21M4910+39#25758#25719
21M → 35K1016-6#25719#25725
35K → 23M831+82#25725#25643
23M → 24M670+67#25643#25576
24M → 40K801+79#25576#25497
40K → 25.2M171+16#25497#25481
25.2M → Finish2510+15#25481#25466
TOTALS110879+1029
📊

Passing Visuals

Category:
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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