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BOSTON MARATHON 2023

Sarah Keay

Bib: 18223•F

ON

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:42
Rank: #15979
Start → 5K
8:16/mi
25:42 split
10K· 6.21 mi
50:44
Rank: #15592 (+387)
5K → 10K
8:03/mi
25:02 split
15K· 9.32 mi
1:15:43
Rank: #15297 (+295)
10K → 15K
8:02/mi
24:59 split
20K· 12.43 mi
1:41:27
Rank: #15344 (-47)
15K → 20K
8:17/mi
25:44 split
Half· 13.11 mi
1:47:05
Rank: #15374 (-30)
20K → Half
8:15/mi
5:38 split
25K· 15.53 mi
2:08:58
Rank: #16049 (-675)
Half → 25K
9:02/mi
21:53 split
30K· 18.64 mi
2:39:45
Rank: #17181 (-1132)
25K → 30K
9:54/mi
30:47 split
20M
2:53:00
Rank: #17417 (-236)
30K → 20M
9:45/mi
13:15 split
21M
3:04:18
Rank: #17836 (-419)
20M → 21M
11:18/mi
11:18 split
35K· 21.75 mi
3:10:52
Rank: #17796 (+40)
21M → 35K
8:47/mi
6:34 split
23M
3:25:01
Rank: #18382 (-586)
35K → 23M
11:18/mi
14:09 split
24M
3:35:44
Rank: #18699 (-317)
23M → 24M
10:43/mi
10:43 split
40K· 24.85 mi
3:45:52
Rank: #19080 (-381)
24M → 40K
11:51/mi
10:08 split
25.2M
3:50:10
Rank: #19207 (-127)
40K → 25.2M
12:28/mi
4:18 split
Finish· 26.22 mi
3:59:45
Rank: #19270 (-63)
25.2M → Finish
9:24/mi
9:35 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:05
Pace8:10 /mi
2nd Half
Distance13.11 mi
Time2:12:40
Pace10:07 /mi
📊Positive Split: 23.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:0825:428:1625:42
8:16
-
10K
6.21 mi11:42:1050:448:1025:02
8:03
-0:13
15K
9.32 mi12:07:091:15:438:0724:59
8:02
-0:01
20K
12.43 mi12:32:531:41:278:1025:44
8:17
+0:15
Half
13.11 mi12:38:311:47:058:105:38
8:15
-0:02
25K
15.53 mi13:00:242:08:588:1821:53
9:02
+0:47
30K
18.64 mi13:31:112:39:458:3430:47
9:54
+0:52
20M
20.00 mi13:44:262:53:008:3913:15
9:45
-0:09
21M
21.00 mi13:55:443:04:188:4711:18
11:18
+1:33
35K
21.75 mi14:02:183:10:528:476:34
8:47
-2:31
23M
23.00 mi14:16:273:25:018:5514:09
11:18
+2:31
24M
24.00 mi14:27:103:35:448:5910:43
10:43
-0:35
40K
24.85 mi14:37:183:45:529:0510:08
11:51
+1:08
25.2M
25.20 mi14:41:363:50:109:084:18
12:28
+0:37
Finish
26.22 mi14:51:113:59:459:099:35
9:24
-3:04

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

8:02 /mi

Average Pace

9:09 /mi

Slowest Pace

12:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:05

45% of race

Time at Steady Pace

1:22:04

34% of race

Time at Slower Pace

50:36

21% of race

Average Pace: 9:09 /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 mi11:17:0825:428:1625:42
8:16
#15979
10K
6.21 mi11:42:1050:448:1025:02
8:03
#15592
15K
9.32 mi12:07:091:15:438:0724:59
8:02
#15297
20K
12.43 mi12:32:531:41:278:1025:44
8:17
#15344
Half
13.11 mi12:38:311:47:058:105:38
8:15
#15374
25K
15.53 mi13:00:242:08:588:1821:53
9:02
#16049
30K
18.64 mi13:31:112:39:458:3430:47
9:54
#17181
20M
20.00 mi13:44:262:53:008:3913:15
9:45
#17417
21M
21.00 mi13:55:443:04:188:4711:18
11:18
#17836
35K
21.75 mi14:02:183:10:528:476:34
8:47
#17796
23M
23.00 mi14:16:273:25:018:5514:09
11:18
#18382
24M
24.00 mi14:27:103:35:448:5910:43
10:43
#18699
40K
24.85 mi14:37:183:45:529:0510:08
11:51
#19080
25.2M
25.20 mi14:41:363:50:109:084:18
12:28
#19207
Finish
26.22 mi14:51:113:59:459:099:35
9:24
#19270
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi159795269526914754(Top 55%)4543(Top 40%)4543(Top 242%)
10K6.21 mi3.10 mi15592+3875027+2425027+24215242(Top 57%)4829(Top 42%)4829(Top 257%)
15K9.32 mi3.11 mi15297+2954852+1754852+17514754(Top 55%)4543(Top 40%)4543(Top 242%)
20K12.43 mi3.11 mi15344-474900-484900-4815522(Top 58%)5049(Top 44%)5049(Top 269%)
Half13.11 mi0.68 mi15374-304922-224922-2216291(Top 61%)5492(Top 48%)5492(Top 292%)
25K15.53 mi2.42 mi16049-6755367-4455367-44519103(Top 72%)7190(Top 63%)7190(Top 383%)
30K18.64 mi3.11 mi17181-11326068-7016068-70120771(Top 78%)8206(Top 72%)8206(Top 437%)
20M20.00 mi1.36 mi17417-2366229-1616229-16119719(Top 74%)7711(Top 68%)7711(Top 411%)
21M21.00 mi1.00 mi17836-4196492-2636492-26321481(Top 81%)8725(Top 76%)8725(Top 465%)
35K21.75 mi0.75 mi17796+406480+126480+1216880(Top 63%)6224(Top 54%)6224(Top 331%)
23M23.00 mi1.25 mi18382-5866839-3596839-35922895(Top 86%)9531(Top 83%)9531(Top 508%)
24M24.00 mi1.00 mi18699-3177027-1887027-18822487(Top 84%)9357(Top 82%)9357(Top 498%)
40K24.85 mi0.85 mi19080-3817247-2207247-22023703(Top 89%)10039(Top 88%)10039(Top 535%)
25.2M25.20 mi0.35 mi19207-1277320-737320-7323234(Top 87%)9780(Top 86%)9780(Top 521%)
Finish26.22 mi1.02 mi19270-637363-437363-4319791(Top 74%)7886(Top 69%)7886(Top 420%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14754

Females

4543

F40-44

4543

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

15242

Females

4829

F40-44

4829

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14754

Females

4543

F40-44

4543

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

15522

Females

5049

F40-44

5049

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

16291

Females

5492

F40-44

5492

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

19103

Females

7190

F40-44

7190

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

20771

Females

8206

F40-44

8206

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

19719

Females

7711

F40-44

7711

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

21481

Females

8725

F40-44

8725

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16880

Females

6224

F40-44

6224

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

22895

Females

9531

F40-44

9531

23M→24M

23.0 - 24.0 mi

Top 84%
×6story building
+12ft-82ft

Overall

22487

Females

9357

F40-44

9357

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23703

Females

10039

F40-44

10039

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

23234

Females

9780

F40-44

9780

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

19791

Females

7886

F40-44

7886

Passing Analysis

Category:
Athletes Passed
1329
Passed By
4620
Net Change
-3291
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15979
5K → 10K534147+387#15979#15592
10K → 15K36368+295#15592#15297
15K → 20K156203-47#15297#15344
20K → Half3060-30#15344#15374
Half → 25K26701-675#15374#16049
25K → 30K291161-1132#16049#17181
30K → 20M34270-236#17181#17417
20M → 21M11430-419#17417#17836
21M → 35K7232+40#17836#17796
35K → 23M10596-586#17796#18382
23M → 24M9326-317#18382#18699
24M → 40K9390-381#18699#19080
40K → 25.2M7134-127#19080#19207
25.2M → Finish39102-63#19207#19270
TOTALS13294620-3291
📊

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