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BOSTON MARATHON 2023

Sunduk Kim

Bib: 14009•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 42%
Gender (Female)
#0 / 11423
Top 24%
Masters (Masters Women)
#0 / 6539
Top 12%
Division (F40-44)
#0 / 1878
Top 23%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:38
Rank: #10612
Start → 5K
23:38 | 7:36/mi
10K· 6.21 mi
47:07
Rank: #10772 (-160)
5K → 10K
23:29 | 7:34/mi
15K· 9.32 mi
1:10:43
Rank: #10817 (-45)
10K → 15K
23:36 | 7:36/mi
20K· 12.43 mi
1:35:01
Rank: #11076 (-259)
15K → 20K
24:18 | 7:49/mi
Half· 13.11 mi
1:40:39
Rank: #11350 (-274)
20K → Half
5:38 | 8:15/mi
25K· 15.53 mi
1:59:30
Rank: #11241 (+109)
Half → 25K
18:51 | 7:46/mi
30K· 18.64 mi
2:24:58
Rank: #11417 (-176)
25K → 30K
25:28 | 8:12/mi
20M
2:36:05
Rank: #11396 (+21)
30K → 20M
11:07 | 8:11/mi
21M
2:44:40
Rank: #11344 (+52)
20M → 21M
8:35 | 8:35/mi
35K· 21.75 mi
2:50:48
Rank: #11427 (-83)
21M → 35K
6:08 | 8:12/mi
23M
3:00:54
Rank: #11341 (+86)
35K → 23M
10:06 | 8:04/mi
24M
3:08:47
Rank: #11292 (+49)
23M → 24M
7:53 | 7:53/mi
40K· 24.85 mi
3:15:34
Rank: #11203 (+89)
24M → 40K
6:47 | 7:56/mi
25.2M
3:18:37
Rank: #11190 (+13)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:26:52
Rank: #11250 (-60)
25.2M → Finish
8:15 | 8:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:39
Pace7:41 /mi
2nd Half
Distance13.11 mi
Time1:46:13
Pace8:06 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:3123:387:3623:38
7:36
-
10K
6.21 mi11:17:0047:077:3523:29
7:34
-0:02
15K
9.32 mi11:40:361:10:437:3523:36
7:36
+0:02
20K
12.43 mi12:04:541:35:017:3924:18
7:49
+0:13
Half
13.11 mi12:10:321:40:397:415:38
8:15
+0:26
25K
15.53 mi12:29:231:59:307:4218:51
7:46
-0:29
30K
18.64 mi12:54:512:24:587:4725:28
8:12
+0:26
20M
20.00 mi13:05:582:36:057:4811:07
8:11
-0:01
21M
21.00 mi13:14:332:44:407:508:35
8:35
+0:24
35K
21.75 mi13:20:412:50:487:516:08
8:12
-0:23
23M
23.00 mi13:30:473:00:547:5210:06
8:04
-0:08
24M
24.00 mi13:38:403:08:477:527:53
7:53
-0:11
40K
24.85 mi13:45:273:15:347:526:47
7:56
+0:03
25.2M
25.20 mi13:48:303:18:377:533:03
8:51
+0:55
Finish
26.22 mi13:56:453:26:527:548:15
8:06
-0:45

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

7:34 /mi

Average Pace

7:54 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:15:14

94% of race

Time at Steady Pace

11:38

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:53 /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 mi10:53:3123:387:3623:38
7:36
#10612
10K
6.21 mi11:17:0047:077:3523:29
7:34
#10772
15K
9.32 mi11:40:361:10:437:3523:36
7:36
#10817
20K
12.43 mi12:04:541:35:017:3924:18
7:49
#11076
Half
13.11 mi12:10:321:40:397:415:38
8:15
#11350
25K
15.53 mi12:29:231:59:307:4218:51
7:46
#11241
30K
18.64 mi12:54:512:24:587:4725:28
8:12
#11417
20M
20.00 mi13:05:582:36:057:4811:07
8:11
#11396
21M
21.00 mi13:14:332:44:407:508:35
8:35
#11344
35K
21.75 mi13:20:412:50:487:516:08
8:12
#11427
23M
23.00 mi13:30:473:00:547:5210:06
8:04
#11341
24M
24.00 mi13:38:403:08:477:527:53
7:53
#11292
40K
24.85 mi13:45:273:15:347:526:47
7:56
#11203
25.2M
25.20 mi13:48:303:18:377:533:03
8:51
#11190
Finish
26.22 mi13:56:453:26:527:548:15
8:06
#11250
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi106122145214510998(Top 41%)2342(Top 21%)2342(Top 125%)
10K6.21 mi3.10 mi10772-1602214-692214-6910957(Top 41%)2293(Top 20%)2293(Top 122%)
15K9.32 mi3.11 mi10817-452245-312245-3110998(Top 41%)2342(Top 21%)2342(Top 125%)
20K12.43 mi3.11 mi11076-2592368-1232368-12311931(Top 45%)2928(Top 26%)2928(Top 156%)
Half13.11 mi0.68 mi11350-2742534-1662534-16616195(Top 61%)5396(Top 47%)5396(Top 287%)
25K15.53 mi2.42 mi11241+1092497+372497+3710910(Top 41%)2439(Top 21%)2439(Top 130%)
30K18.64 mi3.11 mi11417-1762643-1462643-14612330(Top 46%)3371(Top 30%)3371(Top 179%)
20M20.00 mi1.36 mi11396+212653-102653-1011575(Top 43%)3037(Top 27%)3037(Top 162%)
21M21.00 mi1.00 mi11344+522645+82645+810985(Top 41%)2858(Top 25%)2858(Top 152%)
35K21.75 mi0.75 mi11427-832704-592704-5913414(Top 50%)4213(Top 37%)4213(Top 224%)
23M23.00 mi1.25 mi11341+862683+212683+2110257(Top 39%)2628(Top 23%)2628(Top 140%)
24M24.00 mi1.00 mi11292+492674+92674+910432(Top 39%)2798(Top 24%)2798(Top 149%)
40K24.85 mi0.85 mi11203+892656+182656+189626(Top 36%)2471(Top 22%)2471(Top 132%)
25.2M25.20 mi0.35 mi11190+132664-82664-811616(Top 44%)3512(Top 31%)3512(Top 187%)
Finish26.22 mi1.02 mi11250-602719-552719-5512757(Top 48%)4081(Top 36%)4081(Top 217%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

10998

Females

2342

F40-44

2342

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10957

Females

2293

F40-44

2293

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

10998

Females

2342

F40-44

2342

15K→20K

9.3 - 12.4 mi

Top 45%
×5stories
+106ft-86ft

Overall

11931

Females

2928

F40-44

2928

20K→Half

12.4 - 13.1 mi

Top 61%
×2stories
+19ft-37ft

Overall

16195

Females

5396

F40-44

5396

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10910

Females

2439

F40-44

2439

25K→30K

15.5 - 18.6 mi

Top 46%
×9stories
+181ft-148ft

Overall

12330

Females

3371

F40-44

3371

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

11575

Females

3037

F40-44

3037

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

10985

Females

2858

F40-44

2858

21M→35K

21.0 - 21.8 mi

Top 50%
×7stories
+17ft-86ft

Overall

13414

Females

4213

F40-44

4213

35K→23M

21.8 - 23.0 mi

Top 39%
×5stories
+23ft-63ft

Overall

10257

Females

2628

F40-44

2628

23M→24M

23.0 - 24.0 mi

Top 39%
×6stories
+12ft-82ft

Overall

10432

Females

2798

F40-44

2798

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9626

Females

2471

F40-44

2471

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11616

Females

3512

F40-44

3512

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

12757

Females

4081

F40-44

4081

Passing Analysis

Category:
Athletes Passed
1429
Passed By
2067
Net Change
-638
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10612
5K → 10K217377-160#10612#10772
10K → 15K166211-45#10772#10817
15K → 20K86345-259#10817#11076
20K → Half2276-274#11076#11350
Half → 25K17364+109#11350#11241
25K → 30K126302-176#11241#11417
30K → 20M9271+21#11417#11396
20M → 21M11866+52#11396#11344
21M → 35K28111-83#11344#11427
35K → 23M13852+86#11427#11341
23M → 24M8536+49#11341#11292
24M → 40K11021+89#11292#11203
40K → 25.2M3724+13#11203#11190
25.2M → Finish51111-60#11190#11250
TOTALS14292067-638
📊

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