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BOSTON MARATHON 2023

Kathryn Clark

Bib: 24734•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
36:51
Rank: #26385
Start → 5K
36:51 | 11:52/mi
10K· 6.21 mi
1:19:52
Rank: #26571 (-186)
5K → 10K
43:01 | 13:51/mi
15K· 9.32 mi
1:57:05
Rank: #26512 (+59)
10K → 15K
37:13 | 11:59/mi
20K· 12.43 mi
2:40:01
Rank: #26522 (-10)
15K → 20K
42:56 | 13:49/mi
Half· 13.11 mi
2:47:55
Rank: #26501 (+21)
20K → Half
7:54 | 11:35/mi
25K· 15.53 mi
3:19:27
Rank: #26451 (+50)
Half → 25K
31:32 | 13:00/mi
30K· 18.64 mi
4:06:36
Rank: #26484 (-33)
25K → 30K
47:09 | 15:11/mi
20M
4:28:15
Rank: #26509 (-25)
30K → 20M
21:39 | 15:56/mi
21M
4:41:15
Rank: #26467 (+42)
20M → 21M
13:00 | 13:00/mi
35K· 21.75 mi
4:50:16
Rank: #26433 (+34)
21M → 35K
9:01 | 12:03/mi
23M
5:08:04
Rank: #26422 (+11)
35K → 23M
17:48 | 14:13/mi
24M
5:22:31
Rank: #26426 (-4)
23M → 24M
14:27 | 14:27/mi
40K· 24.85 mi
5:35:23
Rank: #26428 (-2)
24M → 40K
12:52 | 15:03/mi
25.2M
5:40:14
Rank: #26415 (+13)
40K → 25.2M
4:51 | 14:04/mi
Finish· 26.22 mi
5:50:49
Rank: #26364 (+51)
25.2M → Finish
10:35 | 10:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:47:55
Pace12:49 /mi
2nd Half
Distance13.11 mi
Time3:02:54
Pace13:57 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:59:1636:5111:5236:51
11:52
-
10K
6.21 mi12:42:171:19:5212:5143:01
13:51
+1:59
15K
9.32 mi13:19:301:57:0512:3437:13
11:59
-1:52
20K
12.43 mi14:02:262:40:0112:5342:56
13:49
+1:50
Half
13.11 mi14:10:202:47:5512:497:54
11:35
-2:14
25K
15.53 mi14:41:523:19:2712:5031:32
13:00
+1:25
30K
18.64 mi15:29:014:06:3613:1447:09
15:11
+2:11
20M
20.00 mi15:50:404:28:1513:2521:39
15:56
+0:45
21M
21.00 mi16:03:404:41:1513:2413:00
13:00
-2:56
35K
21.75 mi16:12:414:50:1613:219:01
12:03
-0:57
23M
23.00 mi16:30:295:08:0413:2417:48
14:13
+2:10
24M
24.00 mi16:44:565:22:3113:2614:27
14:27
+0:14
40K
24.85 mi16:57:485:35:2313:3012:52
15:03
+0:36
25.2M
25.20 mi17:02:395:40:1413:304:51
14:04
-0:59
Finish
26.22 mi17:13:145:50:4913:2310:35
10:23
-3:41

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

10:23 /mi

Average Pace

13:23 /mi

Slowest Pace

15:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:06

42% of race

Time at Steady Pace

2:03:03

35% of race

Time at Slower Pace

1:21:40

23% of race

Average Pace: 13:23 /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 mi11:59:1636:5111:5236:51
11:52
#26385
10K
6.21 mi12:42:171:19:5212:5143:01
13:51
#26571
15K
9.32 mi13:19:301:57:0512:3437:13
11:59
#26512
20K
12.43 mi14:02:262:40:0112:5342:56
13:49
#26522
Half
13.11 mi14:10:202:47:5512:497:54
11:35
#26501
25K
15.53 mi14:41:523:19:2712:5031:32
13:00
#26451
30K
18.64 mi15:29:014:06:3613:1447:09
15:11
#26484
20M
20.00 mi15:50:404:28:1513:2521:39
15:56
#26509
21M
21.00 mi16:03:404:41:1513:2413:00
13:00
#26467
35K
21.75 mi16:12:414:50:1613:219:01
12:03
#26433
23M
23.00 mi16:30:295:08:0413:2417:48
14:13
#26422
24M
24.00 mi16:44:565:22:3113:2614:27
14:27
#26426
40K
24.85 mi16:57:485:35:2313:3012:52
15:03
#26428
25.2M
25.20 mi17:02:395:40:1413:304:51
14:04
#26415
Finish
26.22 mi17:13:145:50:4913:2310:35
10:23
#26364
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26385112811128126042(Top 98%)11066(Top 97%)11066(Top 227%)
10K6.21 mi3.10 mi26571-18611404-12311404-12326611(Top 100%)11420(Top 100%)11420(Top 234%)
15K9.32 mi3.11 mi26512+5911367+3711367+3726042(Top 98%)11066(Top 97%)11066(Top 227%)
20K12.43 mi3.11 mi26522-1011378-1111378-1126496(Top 100%)11352(Top 99%)11352(Top 232%)
Half13.11 mi0.68 mi26501+2111365+1311365+1325559(Top 96%)10823(Top 95%)10823(Top 222%)
25K15.53 mi2.42 mi26451+5011327+3811327+3825870(Top 97%)11007(Top 96%)11007(Top 225%)
30K18.64 mi3.11 mi26484-3311346-1911346-1926468(Top 99%)11344(Top 99%)11344(Top 232%)
20M20.00 mi1.36 mi26509-2511364-1811364-1826474(Top 99%)11357(Top 99%)11357(Top 233%)
21M21.00 mi1.00 mi26467+4211334+3011334+3024088(Top 90%)10143(Top 89%)10143(Top 208%)
35K21.75 mi0.75 mi26433+3411315+1911315+1924740(Top 93%)10529(Top 92%)10529(Top 216%)
23M23.00 mi1.25 mi26422+1111308+711308+725960(Top 98%)11120(Top 97%)11120(Top 228%)
24M24.00 mi1.00 mi26426-411312-411312-426245(Top 99%)11271(Top 99%)11271(Top 231%)
40K24.85 mi0.85 mi26428-211315-311315-326179(Top 98%)11257(Top 99%)11257(Top 230%)
25.2M25.20 mi0.35 mi26415+1311308+711308+725066(Top 94%)10734(Top 94%)10734(Top 220%)
Finish26.22 mi1.02 mi26364+5111280+2811280+2822786(Top 86%)9550(Top 84%)9550(Top 196%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21stories
+97ft-345ft

Overall

26042

Females

11066

F18-39

11066

5K→10K

3.1 - 6.2 mi

Top 100%
×5stories
+79ft-138ft

Overall

26611

Females

11420

F18-39

11420

10K→15K

6.2 - 9.3 mi

Top 98%
×3stories
+67ft-78ft

Overall

26042

Females

11066

F18-39

11066

15K→20K

9.3 - 12.4 mi

Top 100%
×5stories
+106ft-86ft

Overall

26496

Females

11352

F18-39

11352

20K→Half

12.4 - 13.1 mi

Top 96%
×2stories
+19ft-37ft

Overall

25559

Females

10823

F18-39

10823

Half→25K

13.1 - 15.5 mi

Top 97%
×4stories
+66ft-88ft

Overall

25870

Females

11007

F18-39

11007

25K→30K

15.5 - 18.6 mi

Top 99%
×9stories
+181ft-148ft

Overall

26468

Females

11344

F18-39

11344

30K→20M

18.6 - 20.0 mi

Top 99%
×5stories
+64ft-50ft

Overall

26474

Females

11357

F18-39

11357

20M→21M

20.0 - 21.0 mi

Top 90%
×8stories
+106ft-24ft

Overall

24088

Females

10143

F18-39

10143

21M→35K

21.0 - 21.8 mi

Top 93%
×7stories
+17ft-86ft

Overall

24740

Females

10529

F18-39

10529

35K→23M

21.8 - 23.0 mi

Top 98%
×5stories
+23ft-63ft

Overall

25960

Females

11120

F18-39

11120

23M→24M

23.0 - 24.0 mi

Top 99%
×6stories
+12ft-82ft

Overall

26245

Females

11271

F18-39

11271

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

26179

Females

11257

F18-39

11257

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

25066

Females

10734

F18-39

10734

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2stories
+22ft-21ft

Overall

22786

Females

9550

F18-39

9550

Passing Analysis

Category:
Athletes Passed
331
Passed By
310
Net Change
+21
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26385
5K → 10K1187-186#26385#26571
10K → 15K601+59#26571#26512
15K → 20K1424-10#26512#26522
20K → Half210+21#26522#26501
Half → 25K500+50#26501#26451
25K → 30K1043-33#26451#26484
30K → 20M227-25#26484#26509
20M → 21M420+42#26509#26467
21M → 35K340+34#26467#26433
35K → 23M187+11#26433#26422
23M → 24M59-4#26422#26426
24M → 40K810-2#26426#26428
40K → 25.2M152+13#26428#26415
25.2M → Finish510+51#26415#26364
TOTALS331310+21
📊

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