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BOSTON MARATHON 2024

Janae Sernoffsky

Bib: 11977•F

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Division (F18-39)
#0 / 4660
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:55
Rank: #5112
Start → 5K
6:44/mi
20:55 split
10K· 6.21 mi
43:34
Rank: #6918 (-1806)
5K → 10K
7:17/mi
22:39 split
15K· 9.32 mi
1:10:05
Rank: #10329 (-3411)
10K → 15K
8:32/mi
26:31 split
20K· 12.43 mi
1:39:22
Rank: #13407 (-3078)
15K → 20K
9:26/mi
29:17 split
Half· 13.11 mi
1:45:33
Rank: #13713 (-306)
20K → Half
9:04/mi
6:11 split
25K· 15.53 mi
2:09:06
Rank: #14701 (-988)
Half → 25K
9:43/mi
23:33 split
30K· 18.64 mi
2:42:31
Rank: #15999 (-1298)
25K → 30K
10:45/mi
33:25 split
20M
2:57:09
Rank: #16295 (-296)
30K → 20M
10:46/mi
14:38 split
21M
3:07:30
Rank: #16208 (+87)
20M → 21M
10:21/mi
10:21 split
35K· 21.75 mi
3:14:59
Rank: #16248 (-40)
21M → 35K
10:00/mi
7:29 split
23M
3:26:37
Rank: #16026 (+222)
35K → 23M
9:17/mi
11:38 split
24M
3:35:52
Rank: #15899 (+127)
23M → 24M
9:15/mi
9:15 split
40K· 24.85 mi
3:44:19
Rank: #15818 (+81)
24M → 40K
9:53/mi
8:27 split
25.2M
3:47:45
Rank: #15717 (+101)
40K → 25.2M
9:57/mi
3:26 split
Finish· 26.22 mi
3:56:43
Rank: #15619 (+98)
25.2M → Finish
8:48/mi
8:58 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:33
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time2:11:10
Pace10:00 /mi
📊Positive Split: 24.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:2720:556:4420:55
6:44
-
10K
6.21 mi11:11:0643:347:0122:39
7:17
+0:33
15K
9.32 mi11:37:371:10:057:3126:31
8:32
+1:15
20K
12.43 mi12:06:541:39:228:0029:17
9:26
+0:54
Half
13.11 mi12:13:051:45:338:036:11
9:04
-0:22
25K
15.53 mi12:36:382:09:068:1923:33
9:43
+0:39
30K
18.64 mi13:10:032:42:318:4333:25
10:45
+1:02
20M
20.00 mi13:24:412:57:098:5114:38
10:46
+0:01
21M
21.00 mi13:35:023:07:308:5610:21
10:21
-0:25
35K
21.75 mi13:42:313:14:598:587:29
10:00
-0:21
23M
23.00 mi13:54:093:26:378:5911:38
9:17
-0:43
24M
24.00 mi14:03:243:35:529:009:15
9:15
-0:02
40K
24.85 mi14:11:513:44:199:028:27
9:53
+0:38
25.2M
25.20 mi14:15:173:47:459:023:26
9:57
+0:04
Finish
26.22 mi14:24:153:56:439:028:58
8:48
-1:09

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

6:44 /mi

Average Pace

9:02 /mi

Slowest Pace

10:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:03

33% of race

Time at Steady Pace

1:31:47

39% of race

Time at Slower Pace

1:05:53

28% of race

Average Pace: 9:02 /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 mi10:48:2720:556:4420:55
6:44
#5112
10K
6.21 mi11:11:0643:347:0122:39
7:17
#6918
15K
9.32 mi11:37:371:10:057:3126:31
8:32
#10329
20K
12.43 mi12:06:541:39:228:0029:17
9:26
#13407
Half
13.11 mi12:13:051:45:338:036:11
9:04
#13713
25K
15.53 mi12:36:382:09:068:1923:33
9:43
#14701
30K
18.64 mi13:10:032:42:318:4333:25
10:45
#15999
20M
20.00 mi13:24:412:57:098:5114:38
10:46
#16295
21M
21.00 mi13:35:023:07:308:5610:21
10:21
#16208
35K
21.75 mi13:42:313:14:598:587:29
10:00
#16248
23M
23.00 mi13:54:093:26:378:5911:38
9:17
#16026
24M
24.00 mi14:03:243:35:529:009:15
9:15
#15899
40K
24.85 mi14:11:513:44:199:028:27
9:53
#15818
25.2M
25.20 mi14:15:173:47:459:023:26
9:57
#15717
Finish
26.22 mi14:24:153:56:439:028:58
8:48
#15619
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi511237337316600(Top 65%)5921(Top 54%)5921(Top 127%)
10K6.21 mi3.10 mi6918-1806826-453826-4538615(Top 34%)1481(Top 14%)1481(Top 32%)
15K9.32 mi3.11 mi10329-34112254-14282254-142816600(Top 65%)5921(Top 54%)5921(Top 127%)
20K12.43 mi3.11 mi13407-30784020-17664020-176618956(Top 74%)7245(Top 66%)7245(Top 155%)
Half13.11 mi0.68 mi13713-3064192-1724192-17218555(Top 73%)7075(Top 65%)7075(Top 152%)
25K15.53 mi2.42 mi14701-9884822-6304822-63018266(Top 71%)6971(Top 64%)6971(Top 150%)
30K18.64 mi3.11 mi15999-12985672-8505672-85019412(Top 76%)7799(Top 71%)7799(Top 167%)
20M20.00 mi1.36 mi16295-2965883-2115883-21118709(Top 73%)7570(Top 69%)7570(Top 162%)
21M21.00 mi1.00 mi16208+875866+175866+1714329(Top 56%)5480(Top 50%)5480(Top 118%)
35K21.75 mi0.75 mi16248-405916-505916-5017166(Top 67%)6927(Top 63%)6927(Top 149%)
23M23.00 mi1.25 mi16026+2225825+915825+9112582(Top 49%)4711(Top 43%)4711(Top 101%)
24M24.00 mi1.00 mi15899+1275786+395786+3913347(Top 52%)5101(Top 47%)5101(Top 109%)
40K24.85 mi0.85 mi15818+815773+135773+1314594(Top 57%)5816(Top 53%)5816(Top 125%)
25.2M25.20 mi0.35 mi15717+1015730+435730+4310849(Top 42%)4042(Top 37%)4042(Top 87%)
Finish26.22 mi1.02 mi15619+985704+265704+2613191(Top 52%)5068(Top 46%)5068(Top 109%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

16600

Females

5921

F18-39

5921

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

8615

Females

1481

F18-39

1481

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

16600

Females

5921

F18-39

5921

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

18956

Females

7245

F18-39

7245

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

18555

Females

7075

F18-39

7075

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

18266

Females

6971

F18-39

6971

25K→30K

15.5 - 18.6 mi

Top 76%
×9story building
+181ft-148ft

Overall

19412

Females

7799

F18-39

7799

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

18709

Females

7570

F18-39

7570

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

14329

Females

5480

F18-39

5480

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

17166

Females

6927

F18-39

6927

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

12582

Females

4711

F18-39

4711

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

13347

Females

5101

F18-39

5101

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

14594

Females

5816

F18-39

5816

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

10849

Females

4042

F18-39

4042

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

13191

Females

5068

F18-39

5068

Passing Analysis

Category:
Athletes Passed
1103
Passed By
11608
Net Change
-10507
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5112
5K → 10K61812-1806#5112#6918
10K → 15K33412-3411#6918#10329
15K → 20K123090-3078#10329#13407
20K → Half6312-306#13407#13713
Half → 25K511039-988#13713#14701
25K → 30K421340-1298#14701#15999
30K → 20M53349-296#15999#16295
20M → 21M14558+87#16295#16208
21M → 35K5696-40#16208#16248
35K → 23M23715+222#16248#16026
23M → 24M14518+127#16026#15899
24M → 40K11938+81#15899#15818
40K → 25.2M1032+101#15818#15717
25.2M → Finish12527+98#15717#15619
TOTALS110311608-10507
📊

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