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BOSTON MARATHON 2024

Samantha Kempner

Bib: 19392•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 40%
Gender (Female)
#0 / 10924
Top 25%
Masters (Masters Women)
#0 / 6263
Top 13%
Division (F40-44)
#0 / 1613
Top 27%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:40
Rank: #14183
Start → 5K
7:56/mi
24:40 split
10K· 6.21 mi
49:14
Rank: #13832 (+351)
5K → 10K
7:54/mi
24:34 split
15K· 9.32 mi
1:13:32
Rank: #13226 (+606)
10K → 15K
7:49/mi
24:18 split
20K· 12.43 mi
1:37:49
Rank: #12429 (+797)
15K → 20K
7:49/mi
24:17 split
Half· 13.11 mi
1:43:02
Rank: #12302 (+127)
20K → Half
7:39/mi
5:13 split
25K· 15.53 mi
2:02:16
Rank: #11765 (+537)
Half → 25K
7:56/mi
19:14 split
30K· 18.64 mi
2:28:17
Rank: #11332 (+433)
25K → 30K
8:22/mi
26:01 split
20M
2:39:36
Rank: #11035 (+297)
30K → 20M
8:20/mi
11:19 split
21M
2:48:22
Rank: #10718 (+317)
20M → 21M
8:46/mi
8:46 split
35K· 21.75 mi
2:54:34
Rank: #10655 (+63)
21M → 35K
8:17/mi
6:12 split
23M
3:05:15
Rank: #10463 (+192)
35K → 23M
8:32/mi
10:41 split
24M
3:13:32
Rank: #10321 (+142)
23M → 24M
8:17/mi
8:17 split
40K· 24.85 mi
3:20:50
Rank: #10235 (+86)
24M → 40K
8:32/mi
7:18 split
25.2M
3:24:06
Rank: #10194 (+41)
40K → 25.2M
9:28/mi
3:16 split
Finish· 26.22 mi
3:32:21
Rank: #10120 (+74)
25.2M → Finish
8:06/mi
8:15 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:02
Pace7:52 /mi
2nd Half
Distance13.11 mi
Time1:49:19
Pace8:20 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:0124:407:5624:40
7:56
-
10K
6.21 mi11:43:3549:147:5524:34
7:54
-0:02
15K
9.32 mi12:07:531:13:327:5324:18
7:49
-0:05
20K
12.43 mi12:32:101:37:497:5224:17
7:49
0:00
Half
13.11 mi12:37:231:43:027:525:13
7:39
-0:10
25K
15.53 mi12:56:372:02:167:5219:14
7:56
+0:17
30K
18.64 mi13:22:382:28:177:5726:01
8:22
+0:26
20M
20.00 mi13:33:572:39:367:5911:19
8:20
-0:02
21M
21.00 mi13:42:432:48:228:018:46
8:46
+0:26
35K
21.75 mi13:48:552:54:348:026:12
8:17
-0:29
23M
23.00 mi13:59:363:05:158:0310:41
8:32
+0:15
24M
24.00 mi14:07:533:13:328:048:17
8:17
-0:15
40K
24.85 mi14:15:113:20:508:057:18
8:32
+0:15
25.2M
25.20 mi14:18:273:24:068:063:16
9:28
+0:56
Finish
26.22 mi14:26:423:32:218:068:15
8:06
-1:22

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

7:39 /mi

Average Pace

8:06 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:16

58% of race

Time at Steady Pace

1:00:04

28% of race

Time at Slower Pace

30:01

14% of race

Average Pace: 8:06 /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 mi11:19:0124:407:5624:40
7:56
#14183
10K
6.21 mi11:43:3549:147:5524:34
7:54
#13832
15K
9.32 mi12:07:531:13:327:5324:18
7:49
#13226
20K
12.43 mi12:32:101:37:497:5224:17
7:49
#12429
Half
13.11 mi12:37:231:43:027:525:13
7:39
#12302
25K
15.53 mi12:56:372:02:167:5219:14
7:56
#11765
30K
18.64 mi13:22:382:28:177:5726:01
8:22
#11332
20M
20.00 mi13:33:572:39:367:5911:19
8:20
#11035
21M
21.00 mi13:42:432:48:228:018:46
8:46
#10718
35K
21.75 mi13:48:552:54:348:026:12
8:17
#10655
23M
23.00 mi13:59:363:05:158:0310:41
8:32
#10463
24M
24.00 mi14:07:533:13:328:048:17
8:17
#10321
40K
24.85 mi14:15:113:20:508:057:18
8:32
#10235
25.2M
25.20 mi14:18:273:24:068:063:16
9:28
#10194
Finish
26.22 mi14:26:423:32:218:068:15
8:06
#10120
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi141834431443112104(Top 47%)3302(Top 30%)3302(Top 205%)
10K6.21 mi3.10 mi13832+3514234+1974234+19713498(Top 53%)4042(Top 37%)4042(Top 251%)
15K9.32 mi3.11 mi13226+6063876+3583876+35812104(Top 47%)3302(Top 30%)3302(Top 205%)
20K12.43 mi3.11 mi12429+7973442+4343442+43410544(Top 41%)2596(Top 24%)2596(Top 161%)
Half13.11 mi0.68 mi12302+1273388+543388+5410258(Top 40%)2437(Top 22%)2437(Top 151%)
25K15.53 mi2.42 mi11765+5373132+2563132+2569775(Top 38%)2376(Top 22%)2376(Top 147%)
30K18.64 mi3.11 mi11332+4333006+1263006+1269980(Top 39%)2702(Top 25%)2702(Top 168%)
20M20.00 mi1.36 mi11035+2972901+1052901+1058562(Top 34%)2265(Top 21%)2265(Top 140%)
21M21.00 mi1.00 mi10718+3172797+1042797+1047504(Top 29%)1949(Top 18%)1949(Top 121%)
35K21.75 mi0.75 mi10655+632791+62791+69518(Top 37%)2966(Top 27%)2966(Top 184%)
23M23.00 mi1.25 mi10463+1922758+332758+338663(Top 34%)2706(Top 25%)2706(Top 168%)
24M24.00 mi1.00 mi10321+1422743+152743+158237(Top 32%)2601(Top 24%)2601(Top 161%)
40K24.85 mi0.85 mi10235+862736+72736+78574(Top 34%)2855(Top 26%)2855(Top 177%)
25.2M25.20 mi0.35 mi10194+412733+32733+38661(Top 34%)2985(Top 27%)2985(Top 185%)
Finish26.22 mi1.02 mi10120+742729+42729+49165(Top 36%)3128(Top 29%)3128(Top 194%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

12104

Females

3302

F40-44

3302

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

13498

Females

4042

F40-44

4042

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

12104

Females

3302

F40-44

3302

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

10544

Females

2596

F40-44

2596

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

10258

Females

2437

F40-44

2437

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

9775

Females

2376

F40-44

2376

25K→30K

15.5 - 18.6 mi

Top 39%
×9story building
+181ft-148ft

Overall

9980

Females

2702

F40-44

2702

30K→20M

18.6 - 20.0 mi

Top 34%
×5story building
+64ft-50ft

Overall

8562

Females

2265

F40-44

2265

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

7504

Females

1949

F40-44

1949

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9518

Females

2966

F40-44

2966

35K→23M

21.8 - 23.0 mi

Top 34%
×5story building
+23ft-63ft

Overall

8663

Females

2706

F40-44

2706

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

8237

Females

2601

F40-44

2601

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

8574

Females

2855

F40-44

2855

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

8661

Females

2985

F40-44

2985

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9165

Females

3128

F40-44

3128

Passing Analysis

Category:
Athletes Passed
4596*
Passed By
533
Net Change
+4063
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14183
5K → 10K496145+351#14183#13832
10K → 15K62923+606#13832#13226
15K → 20K8003+797#13226#12429
20K → Half1358+127#12429#12302
Half → 25K54912+537#12302#11765
25K → 30K52592+433#11765#11332
30K → 20M32427+297#11332#11035
20M → 21M33417+317#11035#10718
21M → 35K9936+63#10718#10655
35K → 23M24048+192#10655#10463
23M → 24M17331+142#10463#10321
24M → 40K126*40+86#10321#10235
40K → 25.2M5211+41#10235#10194
25.2M → Finish11440+74#10194#10120
TOTALS4596*533+4063

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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