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BOSTON MARATHON 2023

Jaewon Cha

Bib: 15399•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 24%
Division (F18-39)
#0 / 4884
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:50
Rank: #13975
Start → 5K
24:50 | 8:00/mi
10K· 6.21 mi
49:00
Rank: #13472 (+503)
5K → 10K
24:10 | 7:47/mi
15K· 9.32 mi
1:13:20
Rank: #13310 (+162)
10K → 15K
24:20 | 7:50/mi
20K· 12.43 mi
1:37:44
Rank: #12986 (+324)
15K → 20K
24:24 | 7:51/mi
Half· 13.11 mi
1:43:00
Rank: #12940 (+46)
20K → Half
5:16 | 7:43/mi
25K· 15.53 mi
2:02:12
Rank: #12750 (+190)
Half → 25K
19:12 | 7:55/mi
30K· 18.64 mi
2:27:14
Rank: #12444 (+306)
25K → 30K
25:02 | 8:03/mi
20M
2:38:09
Rank: #12272 (+172)
30K → 20M
10:55 | 8:02/mi
21M
2:46:35
Rank: #12118 (+154)
20M → 21M
8:26 | 8:26/mi
35K· 21.75 mi
2:52:09
Rank: #11969 (+149)
21M → 35K
5:34 | 7:26/mi
23M
3:02:18
Rank: #11860 (+109)
35K → 23M
10:09 | 8:06/mi
24M
3:09:54
Rank: #11689 (+171)
23M → 24M
7:36 | 7:36/mi
40K· 24.85 mi
3:16:34
Rank: #11554 (+135)
24M → 40K
6:40 | 7:48/mi
25.2M
3:19:31
Rank: #11510 (+44)
40K → 25.2M
2:57 | 8:33/mi
Finish· 26.22 mi
3:27:17
Rank: #11395 (+115)
25.2M → Finish
7:46 | 7:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:00
Pace7:51 /mi
2nd Half
Distance13.11 mi
Time1:44:17
Pace7:57 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:0624:508:0024:50
8:00
-
10K
6.21 mi11:41:1649:007:5324:10
7:47
-0:13
15K
9.32 mi12:05:361:13:207:5224:20
7:50
+0:03
20K
12.43 mi12:30:001:37:447:5224:24
7:51
+0:01
Half
13.11 mi12:35:161:43:007:515:16
7:43
-0:08
25K
15.53 mi12:54:282:02:127:5219:12
7:55
+0:12
30K
18.64 mi13:19:302:27:147:5425:02
8:03
+0:08
20M
20.00 mi13:30:252:38:097:5410:55
8:02
-0:01
21M
21.00 mi13:38:512:46:357:568:26
8:26
+0:24
35K
21.75 mi13:44:252:52:097:555:34
7:26
-1:00
23M
23.00 mi13:54:343:02:187:5610:09
8:06
+0:40
24M
24.00 mi14:02:103:09:547:557:36
7:36
-0:30
40K
24.85 mi14:08:503:16:347:556:40
7:48
+0:12
25.2M
25.20 mi14:11:473:19:317:552:57
8:33
+0:45
Finish
26.22 mi14:19:333:27:177:557:46
7:37
-0:56

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

7:26 /mi

Average Pace

7:55 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:15:54

95% of race

Time at Steady Pace

11:23

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:54 /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 mi11:17:0624:508:0024:50
8:00
#13975
10K
6.21 mi11:41:1649:007:5324:10
7:47
#13472
15K
9.32 mi12:05:361:13:207:5224:20
7:50
#13310
20K
12.43 mi12:30:001:37:447:5224:24
7:51
#12986
Half
13.11 mi12:35:161:43:007:515:16
7:43
#12940
25K
15.53 mi12:54:282:02:127:5219:12
7:55
#12750
30K
18.64 mi13:19:302:27:147:5425:02
8:03
#12444
20M
20.00 mi13:30:252:38:097:5410:55
8:02
#12272
21M
21.00 mi13:38:512:46:357:568:26
8:26
#12118
35K
21.75 mi13:44:252:52:097:555:34
7:26
#11969
23M
23.00 mi13:54:343:02:187:5610:09
8:06
#11860
24M
24.00 mi14:02:103:09:547:557:36
7:36
#11689
40K
24.85 mi14:08:503:16:347:556:40
7:48
#11554
25.2M
25.20 mi14:11:473:19:317:552:57
8:33
#11510
Finish
26.22 mi14:19:333:27:177:557:46
7:37
#11395
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi139754013401312986(Top 49%)3464(Top 30%)3464(Top 71%)
10K6.21 mi3.10 mi13472+5033715+2983715+29812953(Top 49%)3399(Top 30%)3399(Top 70%)
15K9.32 mi3.11 mi13310+1623636+793636+7912986(Top 49%)3464(Top 30%)3464(Top 71%)
20K12.43 mi3.11 mi12986+3243476+1603476+16012202(Top 46%)3084(Top 27%)3084(Top 63%)
Half13.11 mi0.68 mi12940+463449+273449+2712082(Top 45%)2960(Top 26%)2960(Top 61%)
25K15.53 mi2.42 mi12750+1903365+843365+8412056(Top 45%)3106(Top 27%)3106(Top 64%)
30K18.64 mi3.11 mi12444+3063220+1453220+14511359(Top 43%)2823(Top 25%)2823(Top 58%)
20M20.00 mi1.36 mi12272+1723143+773143+7710548(Top 40%)2515(Top 22%)2515(Top 51%)
21M21.00 mi1.00 mi12118+1543076+673076+6710107(Top 38%)2440(Top 21%)2440(Top 50%)
35K21.75 mi0.75 mi11969+1493003+733003+738171(Top 31%)1589(Top 14%)1589(Top 33%)
23M23.00 mi1.25 mi11860+1092966+372966+3710536(Top 40%)2785(Top 24%)2785(Top 57%)
24M24.00 mi1.00 mi11689+1712889+772889+778452(Top 32%)1871(Top 16%)1871(Top 38%)
40K24.85 mi0.85 mi11554+1352842+472842+478709(Top 33%)2045(Top 18%)2045(Top 42%)
25.2M25.20 mi0.35 mi11510+442826+162826+169943(Top 37%)2659(Top 23%)2659(Top 54%)
Finish26.22 mi1.02 mi11395+1152791+352791+359452(Top 36%)2457(Top 22%)2457(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21stories
+97ft-345ft

Overall

12986

Females

3464

F18-39

3464

5K→10K

3.1 - 6.2 mi

Top 49%
×5stories
+79ft-138ft

Overall

12953

Females

3399

F18-39

3399

10K→15K

6.2 - 9.3 mi

Top 49%
×3stories
+67ft-78ft

Overall

12986

Females

3464

F18-39

3464

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12202

Females

3084

F18-39

3084

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

12082

Females

2960

F18-39

2960

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

12056

Females

3106

F18-39

3106

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11359

Females

2823

F18-39

2823

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

10548

Females

2515

F18-39

2515

20M→21M

20.0 - 21.0 mi

Top 38%
×8stories
+106ft-24ft

Overall

10107

Females

2440

F18-39

2440

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8171

Females

1589

F18-39

1589

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

10536

Females

2785

F18-39

2785

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

8452

Females

1871

F18-39

1871

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8709

Females

2045

F18-39

2045

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9943

Females

2659

F18-39

2659

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2stories
+22ft-21ft

Overall

9452

Females

2457

F18-39

2457

Passing Analysis

Category:
Athletes Passed
3130
Passed By
550
Net Change
+2580
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13975
5K → 10K630127+503#13975#13472
10K → 15K289127+162#13472#13310
15K → 20K36945+324#13310#12986
20K → Half5610+46#12986#12940
Half → 25K23343+190#12940#12750
25K → 30K37064+306#12750#12444
30K → 20M19119+172#12444#12272
20M → 21M17622+154#12272#12118
21M → 35K1501+149#12118#11969
35K → 23M14738+109#11969#11860
23M → 24M18110+171#11860#11689
24M → 40K1449+135#11689#11554
40K → 25.2M5410+44#11554#11510
25.2M → Finish14025+115#11510#11395
TOTALS3130550+2580
📊

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