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BOSTON MARATHON 2023

Katherine Young

Bib: 17626•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:59
Rank: #21625
Start → 5K
9:20/mi
28:59 split
10K· 6.21 mi
58:20
Rank: #22015 (-390)
5K → 10K
9:27/mi
29:21 split
15K· 9.32 mi
1:27:18
Rank: #21886 (+129)
10K → 15K
9:19/mi
28:58 split
20K· 12.43 mi
1:56:02
Rank: #21635 (+251)
15K → 20K
9:15/mi
28:44 split
Half· 13.11 mi
2:02:09
Rank: #21561 (+74)
20K → Half
8:58/mi
6:07 split
25K· 15.53 mi
2:23:49
Rank: #21147 (+414)
Half → 25K
8:56/mi
21:40 split
30K· 18.64 mi
2:52:28
Rank: #20638 (+509)
25K → 30K
9:13/mi
28:39 split
20M
3:04:51
Rank: #20407 (+231)
30K → 20M
9:07/mi
12:23 split
21M
3:14:10
Rank: #20142 (+265)
20M → 21M
9:19/mi
9:19 split
35K· 21.75 mi
3:20:34
Rank: #19987 (+155)
21M → 35K
8:33/mi
6:24 split
23M
3:31:41
Rank: #19747 (+240)
35K → 23M
8:53/mi
11:07 split
24M
3:40:02
Rank: #19539 (+208)
23M → 24M
8:21/mi
8:21 split
40K· 24.85 mi
3:47:18
Rank: #19350 (+189)
24M → 40K
8:30/mi
7:16 split
25.2M
3:50:26
Rank: #19275 (+75)
40K → 25.2M
9:05/mi
3:08 split
Finish· 26.22 mi
3:58:20
Rank: #19009 (+266)
25.2M → Finish
7:45/mi
7:54 split

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:02:09
Pace9:19 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:56:11
Pace8:52 /mi
📊Negative Split: 4.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:5028:599:2028:59
9:20
-
10K
6.21 mi11:49:1158:209:2329:21
9:27
+0:07
15K
9.32 mi12:18:091:27:189:2228:58
9:19
-0:08
20K
12.43 mi12:46:531:56:029:2028:44
9:15
-0:04
Half
13.11 mi12:53:002:02:099:196:07
8:58
-0:17
25K
15.53 mi13:14:402:23:499:1521:40
8:56
-0:02
30K
18.64 mi13:43:192:52:289:1528:39
9:13
+0:17
20M
20.00 mi13:55:423:04:519:1512:23
9:07
-0:06
21M
21.00 mi14:05:013:14:109:159:19
9:19
+0:12
35K
21.75 mi14:11:253:20:349:136:24
8:33
-0:46
23M
23.00 mi14:22:323:31:419:1211:07
8:53
+0:20
24M
24.00 mi14:30:533:40:029:108:21
8:21
-0:32
40K
24.85 mi14:38:093:47:189:097:16
8:30
+0:09
25.2M
25.20 mi14:41:173:50:269:093:08
9:05
+0:35
Finish
26.22 mi14:49:113:58:209:067:54
7:45
-1:20

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

7:45 /mi

Average Pace

9:06 /mi

Slowest Pace

9:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

29:55

13% of race

Time at Steady Pace

1:51:48

47% of race

Time at Slower Pace

1:36:37

41% of race

Average Pace: 9:05 /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 mi11:19:5028:599:2028:59
9:20
#21625
10K
6.21 mi11:49:1158:209:2329:21
9:27
#22015
15K
9.32 mi12:18:091:27:189:2228:58
9:19
#21886
20K
12.43 mi12:46:531:56:029:2028:44
9:15
#21635
Half
13.11 mi12:53:002:02:099:196:07
8:58
#21561
25K
15.53 mi13:14:402:23:499:1521:40
8:56
#21147
30K
18.64 mi13:43:192:52:289:1528:39
9:13
#20638
20M
20.00 mi13:55:423:04:519:1512:23
9:07
#20407
21M
21.00 mi14:05:013:14:109:159:19
9:19
#20142
35K
21.75 mi14:11:253:20:349:136:24
8:33
#19987
23M
23.00 mi14:22:323:31:419:1211:07
8:53
#19747
24M
24.00 mi14:30:533:40:029:108:21
8:21
#19539
40K
24.85 mi14:38:093:47:189:097:16
8:30
#19350
25.2M
25.20 mi14:41:173:50:269:093:08
9:05
#19275
Finish
26.22 mi14:49:113:58:209:067:54
7:45
#19009
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi216258706870621713(Top 82%)8620(Top 75%)8620(Top 176%)
10K6.21 mi3.10 mi22015-3908862-1568862-15622353(Top 84%)9006(Top 79%)9006(Top 184%)
15K9.32 mi3.11 mi21886+1298774+888774+8821713(Top 82%)8620(Top 75%)8620(Top 176%)
20K12.43 mi3.11 mi21635+2518628+1468628+14620774(Top 78%)8096(Top 71%)8096(Top 166%)
Half13.11 mi0.68 mi21561+748581+478581+4720311(Top 76%)7846(Top 69%)7846(Top 161%)
25K15.53 mi2.42 mi21147+4148355+2268355+22618660(Top 70%)6941(Top 61%)6941(Top 142%)
30K18.64 mi3.11 mi20638+5098076+2798076+27918270(Top 69%)6803(Top 60%)6803(Top 139%)
20M20.00 mi1.36 mi20407+2317968+1087968+10817159(Top 64%)6268(Top 55%)6268(Top 128%)
21M21.00 mi1.00 mi20142+2657834+1347834+13415128(Top 57%)5145(Top 45%)5145(Top 105%)
35K21.75 mi0.75 mi19987+1557742+927742+9215661(Top 59%)5520(Top 48%)5520(Top 113%)
23M23.00 mi1.25 mi19747+2407615+1277615+12715464(Top 58%)5440(Top 48%)5440(Top 111%)
24M24.00 mi1.00 mi19539+2087503+1127503+11213587(Top 51%)4456(Top 39%)4456(Top 91%)
40K24.85 mi0.85 mi19350+1897400+1037400+10313405(Top 50%)4441(Top 39%)4441(Top 91%)
25.2M25.20 mi0.35 mi19275+757361+397361+3913133(Top 49%)4331(Top 38%)4331(Top 89%)
Finish26.22 mi1.02 mi19009+2667215+1467215+14610383(Top 39%)2900(Top 25%)2900(Top 59%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

21713

Females

8620

F18-39

8620

5K→10K

3.1 - 6.2 mi

Top 84%
×5story building
+79ft-138ft

Overall

22353

Females

9006

F18-39

9006

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

21713

Females

8620

F18-39

8620

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

20774

Females

8096

F18-39

8096

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

20311

Females

7846

F18-39

7846

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18660

Females

6941

F18-39

6941

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

18270

Females

6803

F18-39

6803

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

17159

Females

6268

F18-39

6268

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

15128

Females

5145

F18-39

5145

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

15661

Females

5520

F18-39

5520

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

15464

Females

5440

F18-39

5440

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

13587

Females

4456

F18-39

4456

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13405

Females

4441

F18-39

4441

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13133

Females

4331

F18-39

4331

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

10383

Females

2900

F18-39

2900

Passing Analysis

Category:
Athletes Passed
3295
Passed By
679
Net Change
+2616
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21625
5K → 10K119509-390#21625#22015
10K → 15K242113+129#22015#21886
15K → 20K27625+251#21886#21635
20K → Half795+74#21635#21561
Half → 25K4140+414#21561#21147
25K → 30K51910+509#21147#20638
30K → 20M2365+231#20638#20407
20M → 21M2661+265#20407#20142
21M → 35K1572+155#20142#19987
35K → 23M2455+240#19987#19747
23M → 24M2080+208#19747#19539
24M → 40K1901+189#19539#19350
40K → 25.2M772+75#19350#19275
25.2M → Finish2671+266#19275#19009
TOTALS3295679+2616
📊

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