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BOSTON MARATHON 2023

Jennifer Whitfield

Bib: 19976•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 47%
Masters (Masters Women)
#0 / 6539
Top 36%
Division (F45-49)
#0 / 1817
Top 43%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:26
Rank: #19626
Start → 5K
27:26 | 8:50/mi
10K· 6.21 mi
52:52
Rank: #17953 (+1673)
5K → 10K
25:26 | 8:11/mi
15K· 9.32 mi
1:18:17
Rank: #17190 (+763)
10K → 15K
25:25 | 8:11/mi
20K· 12.43 mi
1:43:25
Rank: #16439 (+751)
15K → 20K
25:08 | 8:05/mi
Half· 13.11 mi
1:48:59
Rank: #16390 (+49)
20K → Half
5:34 | 8:10/mi
25K· 15.53 mi
2:08:43
Rank: #15947 (+443)
Half → 25K
19:44 | 8:08/mi
30K· 18.64 mi
2:34:54
Rank: #15550 (+397)
25K → 30K
26:11 | 8:26/mi
20M
2:46:32
Rank: #15425 (+125)
30K → 20M
11:38 | 8:34/mi
21M
2:56:00
Rank: #15401 (+24)
20M → 21M
9:28 | 9:28/mi
35K· 21.75 mi
3:02:11
Rank: #15317 (+84)
21M → 35K
6:11 | 8:16/mi
23M
3:13:30
Rank: #15386 (-69)
35K → 23M
11:19 | 9:02/mi
24M
3:22:42
Rank: #15525 (-139)
23M → 24M
9:12 | 9:12/mi
40K· 24.85 mi
3:30:52
Rank: #15663 (-138)
24M → 40K
8:10 | 9:33/mi
25.2M
3:34:22
Rank: #15721 (-58)
40K → 25.2M
3:30 | 10:09/mi
Finish· 26.22 mi
3:43:39
Rank: #15840 (-119)
25.2M → Finish
9:17 | 9:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:59
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time1:54:40
Pace8:45 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:2427:268:5027:26
8:50
-
10K
6.21 mi11:46:5052:528:3025:26
8:11
-0:39
15K
9.32 mi12:12:151:18:178:2425:25
8:11
0:00
20K
12.43 mi12:37:231:43:258:1925:08
8:05
-0:06
Half
13.11 mi12:42:571:48:598:195:34
8:10
+0:05
25K
15.53 mi13:02:412:08:438:1719:44
8:08
-0:02
30K
18.64 mi13:28:522:34:548:1926:11
8:26
+0:18
20M
20.00 mi13:40:302:46:328:2011:38
8:34
+0:08
21M
21.00 mi13:49:582:56:008:239:28
9:28
+0:54
35K
21.75 mi13:56:093:02:118:236:11
8:16
-1:12
23M
23.00 mi14:07:283:13:308:2511:19
9:02
+0:46
24M
24.00 mi14:16:403:22:428:279:12
9:12
+0:10
40K
24.85 mi14:24:503:30:528:298:10
9:33
+0:21
25.2M
25.20 mi14:28:203:34:228:303:30
10:09
+0:36
Finish
26.22 mi14:37:373:43:398:329:17
9:07
-1:02

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

8:05 /mi

Average Pace

8:32 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:17

45% of race

Time at Steady Pace

1:11:26

32% of race

Time at Slower Pace

50:56

23% of race

Average Pace: 8:32 /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 mi11:21:2427:268:5027:26
8:50
#19626
10K
6.21 mi11:46:5052:528:3025:26
8:11
#17953
15K
9.32 mi12:12:151:18:178:2425:25
8:11
#17190
20K
12.43 mi12:37:231:43:258:1925:08
8:05
#16439
Half
13.11 mi12:42:571:48:598:195:34
8:10
#16390
25K
15.53 mi13:02:412:08:438:1719:44
8:08
#15947
30K
18.64 mi13:28:522:34:548:1926:11
8:26
#15550
20M
20.00 mi13:40:302:46:328:2011:38
8:34
#15425
21M
21.00 mi13:49:582:56:008:239:28
9:28
#15401
35K
21.75 mi13:56:093:02:118:236:11
8:16
#15317
23M
23.00 mi14:07:283:13:308:2511:19
9:02
#15386
24M
24.00 mi14:16:403:22:428:279:12
9:12
#15525
40K
24.85 mi14:24:503:30:528:298:10
9:33
#15663
25.2M
25.20 mi14:28:203:34:228:303:30
10:09
#15721
Finish
26.22 mi14:37:373:43:398:329:17
9:07
#15840
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi196267590759015730(Top 59%)5129(Top 45%)5129(Top 282%)
10K6.21 mi3.10 mi17953+16736505+10856505+108516168(Top 61%)5383(Top 47%)5383(Top 296%)
15K9.32 mi3.11 mi17190+7636026+4796026+47915730(Top 59%)5129(Top 45%)5129(Top 282%)
20K12.43 mi3.11 mi16439+7515567+4595567+45914177(Top 53%)4213(Top 37%)4213(Top 232%)
Half13.11 mi0.68 mi16390+495545+225545+2215566(Top 58%)5038(Top 44%)5038(Top 277%)
25K15.53 mi2.42 mi15947+4435303+2425303+24213820(Top 52%)4113(Top 36%)4113(Top 226%)
30K18.64 mi3.11 mi15550+3975099+2045099+20413871(Top 52%)4256(Top 37%)4256(Top 234%)
20M20.00 mi1.36 mi15425+1255047+525047+5214038(Top 53%)4438(Top 39%)4438(Top 244%)
21M21.00 mi1.00 mi15401+245058-115058-1115821(Top 59%)5524(Top 48%)5524(Top 304%)
35K21.75 mi0.75 mi15317+845016+425016+4213962(Top 52%)4553(Top 40%)4553(Top 251%)
23M23.00 mi1.25 mi15386-695087-715087-7116254(Top 61%)5881(Top 51%)5881(Top 324%)
24M24.00 mi1.00 mi15525-1395195-1085195-10818061(Top 68%)6931(Top 61%)6931(Top 381%)
40K24.85 mi0.85 mi15663-1385283-885283-8818510(Top 70%)7214(Top 63%)7214(Top 397%)
25.2M25.20 mi0.35 mi15721-585316-335316-3317963(Top 67%)6934(Top 61%)6934(Top 382%)
Finish26.22 mi1.02 mi15840-1195401-855401-8518514(Top 70%)7172(Top 63%)7172(Top 395%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

15730

Females

5129

F45-49

5129

5K→10K

3.1 - 6.2 mi

Top 61%
×5stories
+79ft-138ft

Overall

16168

Females

5383

F45-49

5383

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

15730

Females

5129

F45-49

5129

15K→20K

9.3 - 12.4 mi

Top 53%
×5stories
+106ft-86ft

Overall

14177

Females

4213

F45-49

4213

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

15566

Females

5038

F45-49

5038

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

13820

Females

4113

F45-49

4113

25K→30K

15.5 - 18.6 mi

Top 52%
×9stories
+181ft-148ft

Overall

13871

Females

4256

F45-49

4256

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

14038

Females

4438

F45-49

4438

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

15821

Females

5524

F45-49

5524

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

13962

Females

4553

F45-49

4553

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

16254

Females

5881

F45-49

5881

23M→24M

23.0 - 24.0 mi

Top 68%
×6stories
+12ft-82ft

Overall

18061

Females

6931

F45-49

6931

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18510

Females

7214

F45-49

7214

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

17963

Females

6934

F45-49

6934

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

18514

Females

7172

F45-49

7172

Passing Analysis

Category:
Athletes Passed
4696
Passed By
910
Net Change
+3786
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19626
5K → 10K170027+1673#19626#17953
10K → 15K78320+763#17953#17190
15K → 20K7587+751#17190#16439
20K → Half6213+49#16439#16390
Half → 25K4496+443#16390#15947
25K → 30K43033+397#15947#15550
30K → 20M15126+125#15550#15425
20M → 21M9773+24#15425#15401
21M → 35K9511+84#15401#15317
35K → 23M66135-69#15317#15386
23M → 24M34173-139#15386#15525
24M → 40K30168-138#15525#15663
40K → 25.2M1472-58#15663#15721
25.2M → Finish27146-119#15721#15840
TOTALS4696910+3786
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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