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BOSTON MARATHON 2024

Jennifer Shelbourne

Bib: 21797•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F50-54)
#0 / 1187
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:45
Rank: #18387
Start → 5K
26:45 | 8:37/mi
10K· 6.21 mi
54:05
Rank: #18616 (-229)
5K → 10K
27:20 | 8:48/mi
15K· 9.32 mi
1:22:05
Rank: #18735 (-119)
10K → 15K
28:00 | 9:01/mi
20K· 12.43 mi
1:51:02
Rank: #18667 (+68)
15K → 20K
28:57 | 9:19/mi
Half· 13.11 mi
1:57:19
Rank: #18698 (-31)
20K → Half
6:17 | 9:13/mi
25K· 15.53 mi
2:20:59
Rank: #18641 (+57)
Half → 25K
23:40 | 9:46/mi
30K· 18.64 mi
2:53:17
Rank: #18632 (+9)
25K → 30K
32:18 | 10:24/mi
20M
3:07:24
Rank: #18566 (+66)
30K → 20M
14:07 | 10:23/mi
21M
3:19:13
Rank: #18542 (+24)
20M → 21M
11:49 | 11:49/mi
35K· 21.75 mi
3:27:28
Rank: #18590 (-48)
21M → 35K
8:15 | 11:02/mi
23M
3:41:01
Rank: #18515 (+75)
35K → 23M
13:33 | 10:49/mi
24M
3:51:34
Rank: #18488 (+27)
23M → 24M
10:33 | 10:33/mi
40K· 24.85 mi
4:10:28
Rank: #19628 (-1140)
24M → 40K
18:54 | 22:06/mi
25.2M
4:14:59
Rank: #19626 (+2)
40K → 25.2M
4:31 | 13:06/mi
Finish· 26.22 mi
4:25:25
Rank: #19598 (+28)
25.2M → Finish
10:26 | 10:14/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:19
Pace8:57 /mi
2nd Half
Distance13.11 mi
Time2:28:06
Pace11:18 /mi
📊Positive Split: 26.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:1926:458:3726:45
8:37
-
10K
6.21 mi11:50:3954:058:4227:20
8:48
+0:11
15K
9.32 mi12:18:391:22:058:4828:00
9:01
+0:13
20K
12.43 mi12:47:361:51:028:5628:57
9:19
+0:18
Half
13.11 mi12:53:531:57:198:576:17
9:13
-0:06
25K
15.53 mi13:17:332:20:599:0523:40
9:46
+0:33
30K
18.64 mi13:49:512:53:179:1832:18
10:24
+0:38
20M
20.00 mi14:03:583:07:249:2214:07
10:23
-0:01
21M
21.00 mi14:15:473:19:139:2911:49
11:49
+1:26
35K
21.75 mi14:24:023:27:289:328:15
11:02
-0:47
23M
23.00 mi14:37:353:41:019:3713:33
10:49
-0:13
24M
24.00 mi14:48:083:51:349:3910:33
10:33
-0:16
40K
24.85 mi15:07:024:10:2810:0518:54
22:06
+11:33
25.2M
25.20 mi15:11:334:14:5910:074:31
13:06
-9:00
Finish
26.22 mi15:21:594:25:2510:0810:26
10:14
-2:52

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

8:37 /mi

Average Pace

10:08 /mi

Slowest Pace

22:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

26:45

10% of race

Time at Steady Pace

3:35:15

81% of race

Time at Slower Pace

23:25

9% of race

Average Pace: 10:07 /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 mi11:23:1926:458:3726:45
8:37
#18387
10K
6.21 mi11:50:3954:058:4227:20
8:48
#18616
15K
9.32 mi12:18:391:22:058:4828:00
9:01
#18735
20K
12.43 mi12:47:361:51:028:5628:57
9:19
#18667
Half
13.11 mi12:53:531:57:198:576:17
9:13
#18698
25K
15.53 mi13:17:332:20:599:0523:40
9:46
#18641
30K
18.64 mi13:49:512:53:179:1832:18
10:24
#18632
20M
20.00 mi14:03:583:07:249:2214:07
10:23
#18566
21M
21.00 mi14:15:473:19:139:2911:49
11:49
#18542
35K
21.75 mi14:24:023:27:289:328:15
11:02
#18590
23M
23.00 mi14:37:353:41:019:3713:33
10:49
#18515
24M
24.00 mi14:48:083:51:349:3910:33
10:33
#18488
40K
24.85 mi15:07:024:10:2810:0518:54
22:06
#19628
25.2M
25.20 mi15:11:334:14:5910:074:31
13:06
#19626
Finish
26.22 mi15:21:594:25:2510:0810:26
10:14
#19598
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi183876986698618982(Top 74%)7240(Top 66%)7240(Top 610%)
10K6.21 mi3.10 mi18616-2297117-1317117-13118863(Top 74%)7230(Top 66%)7230(Top 609%)
15K9.32 mi3.11 mi18735-1197155-387155-3818982(Top 74%)7240(Top 66%)7240(Top 610%)
20K12.43 mi3.11 mi18667+687113+427113+4218607(Top 73%)7057(Top 65%)7057(Top 595%)
Half13.11 mi0.68 mi18698-317128-157128-1519156(Top 75%)7434(Top 68%)7434(Top 626%)
25K15.53 mi2.42 mi18641+577113+157113+1518425(Top 72%)7063(Top 65%)7063(Top 595%)
30K18.64 mi3.11 mi18632+97179-667179-6618521(Top 72%)7321(Top 67%)7321(Top 617%)
20M20.00 mi1.36 mi18566+667163+167163+1617686(Top 69%)7058(Top 65%)7058(Top 595%)
21M21.00 mi1.00 mi18542+247173-107173-1018405(Top 72%)7536(Top 69%)7536(Top 635%)
35K21.75 mi0.75 mi18590-487217-447217-4419881(Top 78%)8275(Top 76%)8275(Top 697%)
23M23.00 mi1.25 mi18515+757203+147203+1417924(Top 70%)7382(Top 68%)7382(Top 622%)
24M24.00 mi1.00 mi18488+277213-107213-1018018(Top 71%)7474(Top 68%)7474(Top 630%)
40K24.85 mi0.85 mi19628-11407836-6237836-62325509(Top 100%)10917(Top 100%)10917(Top 920%)
25.2M25.20 mi0.35 mi19626+27841-57841-519918(Top 78%)8470(Top 78%)8470(Top 714%)
Finish26.22 mi1.02 mi19598+287838+37838+319219(Top 75%)8086(Top 74%)8086(Top 681%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

18982

Females

7240

F50-54

7240

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

18863

Females

7230

F50-54

7230

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

18982

Females

7240

F50-54

7240

15K→20K

9.3 - 12.4 mi

Top 73%
×5stories
+106ft-86ft

Overall

18607

Females

7057

F50-54

7057

20K→Half

12.4 - 13.1 mi

Top 75%
×2stories
+19ft-37ft

Overall

19156

Females

7434

F50-54

7434

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

18425

Females

7063

F50-54

7063

25K→30K

15.5 - 18.6 mi

Top 72%
×9stories
+181ft-148ft

Overall

18521

Females

7321

F50-54

7321

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

17686

Females

7058

F50-54

7058

20M→21M

20.0 - 21.0 mi

Top 72%
×8stories
+106ft-24ft

Overall

18405

Females

7536

F50-54

7536

21M→35K

21.0 - 21.8 mi

Top 78%
×7stories
+17ft-86ft

Overall

19881

Females

8275

F50-54

8275

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

17924

Females

7382

F50-54

7382

23M→24M

23.0 - 24.0 mi

Top 71%
×6stories
+12ft-82ft

Overall

18018

Females

7474

F50-54

7474

24M→40K

24.0 - 24.9 mi

Top 100%
×1story
+6ft-20ft

Overall

25509

Females

10917

F50-54

10917

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

19918

Females

8470

F50-54

8470

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

19219

Females

8086

F50-54

8086

Passing Analysis

Category:
Athletes Passed
1772
Passed By
2983
Net Change
-1211
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18387
5K → 10K195424-229#18387#18616
10K → 15K176295-119#18616#18735
15K → 20K282214+68#18735#18667
20K → Half3364-31#18667#18698
Half → 25K229172+57#18698#18641
25K → 30K240231+9#18641#18632
30K → 20M12862+66#18632#18566
20M → 21M11086+24#18566#18542
21M → 35K4593-48#18542#18590
35K → 23M14671+75#18590#18515
23M → 24M8154+27#18515#18488
24M → 40K11141-1140#18488#19628
40K → 25.2M2725+2#19628#19626
25.2M → Finish7951+28#19626#19598
TOTALS17722983-1211
📊

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