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BOSTON MARATHON 2023

Kelly Stafford

Bib: 26784•F

WA

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
37:06
Rank: #26416
Start → 5K
37:06 | 11:56/mi
10K· 6.21 mi
1:14:43
Rank: #26387 (+29)
5K → 10K
37:37 | 12:06/mi
15K· 9.32 mi
1:54:54
Rank: #26430 (-43)
10K → 15K
40:11 | 12:56/mi
20K· 12.43 mi
2:40:34
Rank: #26534 (-104)
15K → 20K
45:40 | 14:42/mi
Half· 13.11 mi
2:49:00
Rank: #26525 (+9)
20K → Half
8:26 | 12:22/mi
25K· 15.53 mi
3:21:39
Rank: #26488 (+37)
Half → 25K
32:39 | 13:28/mi
30K· 18.64 mi
4:05:57
Rank: #26474 (+14)
25K → 30K
44:18 | 14:16/mi
20M
4:25:17
Rank: #26463 (+11)
30K → 20M
19:20 | 14:14/mi
21M
4:39:43
Rank: #26430 (+33)
20M → 21M
14:26 | 14:26/mi
35K· 21.75 mi
4:49:58
Rank: #26425 (+5)
21M → 35K
10:15 | 13:42/mi
23M
5:07:10
Rank: #26400 (+25)
35K → 23M
17:12 | 13:44/mi
24M
5:20:36
Rank: #26388 (+12)
23M → 24M
13:26 | 13:26/mi
40K· 24.85 mi
5:32:15
Rank: #26367 (+21)
24M → 40K
11:39 | 13:38/mi
25.2M
5:37:20
Rank: #26363 (+4)
40K → 25.2M
5:05 | 14:44/mi
Finish· 26.22 mi
5:50:01
Rank: #26348 (+15)
25.2M → Finish
12:41 | 12:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:49:00
Pace12:53 /mi
2nd Half
Distance13.11 mi
Time3:01:01
Pace13:49 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:58:4637:0611:5637:06
11:56
-
10K
6.21 mi12:36:231:14:4312:0137:37
12:06
+0:10
15K
9.32 mi13:16:341:54:5412:2040:11
12:56
+0:50
20K
12.43 mi14:02:142:40:3412:5545:40
14:42
+1:46
Half
13.11 mi14:10:402:49:0012:538:26
12:22
-2:20
25K
15.53 mi14:43:193:21:3912:5932:39
13:28
+1:06
30K
18.64 mi15:27:374:05:5713:1244:18
14:16
+0:48
20M
20.00 mi15:46:574:25:1713:1619:20
14:14
-0:02
21M
21.00 mi16:01:234:39:4313:1914:26
14:26
+0:12
35K
21.75 mi16:11:384:49:5813:2010:15
13:42
-0:44
23M
23.00 mi16:28:505:07:1013:2117:12
13:44
+0:02
24M
24.00 mi16:42:165:20:3613:2213:26
13:26
-0:18
40K
24.85 mi16:53:555:32:1513:2211:39
13:38
+0:12
25.2M
25.20 mi16:59:005:37:2013:235:05
14:44
+1:06
Finish
26.22 mi17:11:415:50:0113:2212:41
12:27
-2:17

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

11:56 /mi

Average Pace

13:22 /mi

Slowest Pace

14:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:01

39% of race

Time at Steady Pace

1:25:11

24% of race

Time at Slower Pace

2:08:49

37% of race

Average Pace: 13:21 /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 mi11:58:4637:0611:5637:06
11:56
#26416
10K
6.21 mi12:36:231:14:4312:0137:37
12:06
#26387
15K
9.32 mi13:16:341:54:5412:2040:11
12:56
#26430
20K
12.43 mi14:02:142:40:3412:5545:40
14:42
#26534
Half
13.11 mi14:10:402:49:0012:538:26
12:22
#26525
25K
15.53 mi14:43:193:21:3912:5932:39
13:28
#26488
30K
18.64 mi15:27:374:05:5713:1244:18
14:16
#26474
20M
20.00 mi15:46:574:25:1713:1619:20
14:14
#26463
21M
21.00 mi16:01:234:39:4313:1914:26
14:26
#26430
35K
21.75 mi16:11:384:49:5813:2010:15
13:42
#26425
23M
23.00 mi16:28:505:07:1013:2117:12
13:44
#26400
24M
24.00 mi16:42:165:20:3613:2213:26
13:26
#26388
40K
24.85 mi16:53:555:32:1513:2211:39
13:38
#26367
25.2M
25.20 mi16:59:005:37:2013:235:05
14:44
#26363
Finish
26.22 mi17:11:415:50:0113:2212:41
12:27
#26348
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26416113041130426463(Top 99%)11338(Top 99%)11338(Top 232%)
10K6.21 mi3.10 mi26387+2911283+2111283+2126326(Top 99%)11250(Top 98%)11250(Top 230%)
15K9.32 mi3.11 mi26430-4311316-3311316-3326463(Top 99%)11338(Top 99%)11338(Top 232%)
20K12.43 mi3.11 mi26534-10411387-7111387-7126580(Top 100%)11403(Top 100%)11403(Top 233%)
Half13.11 mi0.68 mi26525+911382+511382+526092(Top 98%)11118(Top 97%)11118(Top 228%)
25K15.53 mi2.42 mi26488+3711353+2911353+2926106(Top 98%)11136(Top 97%)11136(Top 228%)
30K18.64 mi3.11 mi26474+1411336+1711336+1726154(Top 98%)11170(Top 98%)11170(Top 229%)
20M20.00 mi1.36 mi26463+1111334+211334+225961(Top 98%)11103(Top 97%)11103(Top 227%)
21M21.00 mi1.00 mi26430+3311308+2611308+2625382(Top 95%)10802(Top 95%)10802(Top 221%)
35K21.75 mi0.75 mi26425+511310-211310-226020(Top 98%)11145(Top 98%)11145(Top 228%)
23M23.00 mi1.25 mi26400+2511296+1411296+1425651(Top 96%)10979(Top 96%)10979(Top 225%)
24M24.00 mi1.00 mi26388+1211290+611290+625769(Top 97%)11059(Top 97%)11059(Top 226%)
40K24.85 mi0.85 mi26367+2111278+1211278+1225447(Top 96%)10895(Top 95%)10895(Top 223%)
25.2M25.20 mi0.35 mi26363+411275+311275+325563(Top 96%)10961(Top 96%)10961(Top 224%)
Finish26.22 mi1.02 mi26348+1511274+111274+125648(Top 96%)11004(Top 96%)11004(Top 225%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

26463

Females

11338

F18-39

11338

5K→10K

3.1 - 6.2 mi

Top 99%
×5stories
+79ft-138ft

Overall

26326

Females

11250

F18-39

11250

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

26463

Females

11338

F18-39

11338

15K→20K

9.3 - 12.4 mi

Top 100%
×5stories
+106ft-86ft

Overall

26580

Females

11403

F18-39

11403

20K→Half

12.4 - 13.1 mi

Top 98%
×2stories
+19ft-37ft

Overall

26092

Females

11118

F18-39

11118

Half→25K

13.1 - 15.5 mi

Top 98%
×4stories
+66ft-88ft

Overall

26106

Females

11136

F18-39

11136

25K→30K

15.5 - 18.6 mi

Top 98%
×9stories
+181ft-148ft

Overall

26154

Females

11170

F18-39

11170

30K→20M

18.6 - 20.0 mi

Top 98%
×5stories
+64ft-50ft

Overall

25961

Females

11103

F18-39

11103

20M→21M

20.0 - 21.0 mi

Top 95%
×8stories
+106ft-24ft

Overall

25382

Females

10802

F18-39

10802

21M→35K

21.0 - 21.8 mi

Top 98%
×7stories
+17ft-86ft

Overall

26020

Females

11145

F18-39

11145

35K→23M

21.8 - 23.0 mi

Top 96%
×5stories
+23ft-63ft

Overall

25651

Females

10979

F18-39

10979

23M→24M

23.0 - 24.0 mi

Top 97%
×6stories
+12ft-82ft

Overall

25769

Females

11059

F18-39

11059

24M→40K

24.0 - 24.9 mi

Top 96%
×1story
+6ft-20ft

Overall

25447

Females

10895

F18-39

10895

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

25563

Females

10961

F18-39

10961

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2stories
+22ft-21ft

Overall

25648

Females

11004

F18-39

11004

Passing Analysis

Category:
Athletes Passed
308
Passed By
240
Net Change
+68
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26416
5K → 10K5930+29#26416#26387
10K → 15K1558-43#26387#26430
15K → 20K2106-104#26430#26534
20K → Half90+9#26534#26525
Half → 25K392+37#26525#26488
25K → 30K3016+14#26488#26474
30K → 20M165+11#26474#26463
20M → 21M330+33#26463#26430
21M → 35K149+5#26430#26425
35K → 23M294+25#26425#26400
23M → 24M153+12#26400#26388
24M → 40K221+21#26388#26367
40K → 25.2M40+4#26367#26363
25.2M → Finish216+15#26363#26348
TOTALS308240+68
📊

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