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BOSTON MARATHON 2024

Sarah Zarnowski

Bib: 17552•F

NH

0:00
0:00
/ mi
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 50%
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
24:14
Rank: #13111
Start → 5K
24:14 | 7:48/mi
10K· 6.21 mi
49:09
Rank: #13741 (-630)
5K → 10K
24:55 | 8:01/mi
15K· 9.32 mi
1:15:27
Rank: #14677 (-936)
10K → 15K
26:18 | 8:28/mi
20K· 12.43 mi
1:44:01
Rank: #15667 (-990)
15K → 20K
28:34 | 9:12/mi
Half· 13.11 mi
1:49:38
Rank: #15595 (+72)
20K → Half
5:37 | 8:14/mi
25K· 15.53 mi
2:12:33
Rank: #15929 (-334)
Half → 25K
22:55 | 9:27/mi
30K· 18.64 mi
2:43:23
Rank: #16232 (-303)
25K → 30K
30:50 | 9:55/mi
20M
2:56:36
Rank: #16176 (+56)
30K → 20M
13:13 | 9:44/mi
21M
3:06:38
Rank: #15996 (+180)
20M → 21M
10:02 | 10:02/mi
35K· 21.75 mi
3:13:12
Rank: #15860 (+136)
21M → 35K
6:34 | 8:47/mi
23M
3:24:42
Rank: #15625 (+235)
35K → 23M
11:30 | 9:11/mi
24M
3:33:22
Rank: #15404 (+221)
23M → 24M
8:40 | 8:40/mi
40K· 24.85 mi
3:41:37
Rank: #15322 (+82)
24M → 40K
8:15 | 9:39/mi
25.2M
3:45:26
Rank: #15297 (+25)
40K → 25.2M
3:49 | 11:04/mi
Finish· 26.22 mi
3:54:16
Rank: #15154 (+143)
25.2M → Finish
8:50 | 8:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:38
Pace8:22 /mi
2nd Half
Distance13.11 mi
Time2:04:38
Pace9:30 /mi
📊Positive Split: 13.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5824:147:4824:14
7:48
-
10K
6.21 mi11:39:5349:097:5524:55
8:01
+0:13
15K
9.32 mi12:06:111:15:278:0626:18
8:28
+0:27
20K
12.43 mi12:34:451:44:018:2228:34
9:12
+0:44
Half
13.11 mi12:40:221:49:388:225:37
8:14
-0:58
25K
15.53 mi13:03:172:12:338:3222:55
9:27
+1:13
30K
18.64 mi13:34:072:43:238:4630:50
9:55
+0:28
20M
20.00 mi13:47:202:56:368:5013:13
9:44
-0:11
21M
21.00 mi13:57:223:06:388:5310:02
10:02
+0:18
35K
21.75 mi14:03:563:13:128:536:34
8:47
-1:15
23M
23.00 mi14:15:263:24:428:5411:30
9:11
+0:24
24M
24.00 mi14:24:063:33:228:538:40
8:40
-0:31
40K
24.85 mi14:32:213:41:378:558:15
9:39
+0:59
25.2M
25.20 mi14:36:103:45:268:573:49
11:04
+1:25
Finish
26.22 mi14:45:003:54:168:568:50
8:40
-2:24

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

7:48 /mi

Average Pace

8:56 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:34

42% of race

Time at Steady Pace

1:09:33

30% of race

Time at Slower Pace

1:06:09

28% of race

Average Pace: 8:56 /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 mi11:14:5824:147:4824:14
7:48
#13111
10K
6.21 mi11:39:5349:097:5524:55
8:01
#13741
15K
9.32 mi12:06:111:15:278:0626:18
8:28
#14677
20K
12.43 mi12:34:451:44:018:2228:34
9:12
#15667
Half
13.11 mi12:40:221:49:388:225:37
8:14
#15595
25K
15.53 mi13:03:172:12:338:3222:55
9:27
#15929
30K
18.64 mi13:34:072:43:238:4630:50
9:55
#16232
20M
20.00 mi13:47:202:56:368:5013:13
9:44
#16176
21M
21.00 mi13:57:223:06:388:5310:02
10:02
#15996
35K
21.75 mi14:03:563:13:128:536:34
8:47
#15860
23M
23.00 mi14:15:263:24:428:5411:30
9:11
#15625
24M
24.00 mi14:24:063:33:228:538:40
8:40
#15404
40K
24.85 mi14:32:213:41:378:558:15
9:39
#15322
25.2M
25.20 mi14:36:103:45:268:573:49
11:04
#15297
Finish
26.22 mi14:45:003:54:168:568:50
8:40
#15154
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi131113786378616224(Top 63%)5694(Top 52%)5694(Top 122%)
10K6.21 mi3.10 mi13741-6304174-3884174-38814367(Top 56%)4553(Top 42%)4553(Top 98%)
15K9.32 mi3.11 mi14677-9364750-5764750-57616224(Top 63%)5694(Top 52%)5694(Top 122%)
20K12.43 mi3.11 mi15667-9905374-6245374-62418168(Top 71%)6788(Top 62%)6788(Top 146%)
Half13.11 mi0.68 mi15595+725330+445330+4414271(Top 56%)4631(Top 42%)4631(Top 99%)
25K15.53 mi2.42 mi15929-3345570-2405570-24017379(Top 68%)6480(Top 59%)6480(Top 139%)
30K18.64 mi3.11 mi16232-3035814-2445814-24417109(Top 67%)6571(Top 60%)6571(Top 141%)
20M20.00 mi1.36 mi16176+565810+45810+415469(Top 61%)5935(Top 54%)5935(Top 127%)
21M21.00 mi1.00 mi15996+1805746+645746+6413112(Top 51%)4853(Top 44%)4853(Top 104%)
35K21.75 mi0.75 mi15860+1365692+545692+5412267(Top 48%)4431(Top 41%)4431(Top 95%)
23M23.00 mi1.25 mi15625+2355611+815611+8112092(Top 47%)4460(Top 41%)4460(Top 96%)
24M24.00 mi1.00 mi15404+2215512+995512+9910438(Top 41%)3667(Top 34%)3667(Top 79%)
40K24.85 mi0.85 mi15322+825503+95503+913724(Top 54%)5399(Top 49%)5399(Top 116%)
25.2M25.20 mi0.35 mi15297+255505-25505-214751(Top 58%)5916(Top 54%)5916(Top 127%)
Finish26.22 mi1.02 mi15154+1435453+525453+5212478(Top 49%)4721(Top 43%)4721(Top 101%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21stories
+97ft-345ft

Overall

16224

Females

5694

F18-39

5694

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

14367

Females

4553

F18-39

4553

10K→15K

6.2 - 9.3 mi

Top 63%
×3stories
+67ft-78ft

Overall

16224

Females

5694

F18-39

5694

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

18168

Females

6788

F18-39

6788

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

14271

Females

4631

F18-39

4631

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

17379

Females

6480

F18-39

6480

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

17109

Females

6571

F18-39

6571

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

15469

Females

5935

F18-39

5935

20M→21M

20.0 - 21.0 mi

Top 51%
×8stories
+106ft-24ft

Overall

13112

Females

4853

F18-39

4853

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

12267

Females

4431

F18-39

4431

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

12092

Females

4460

F18-39

4460

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

10438

Females

3667

F18-39

3667

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

13724

Females

5399

F18-39

5399

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

14751

Females

5916

F18-39

5916

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2stories
+22ft-21ft

Overall

12478

Females

4721

F18-39

4721

Passing Analysis

Category:
Athletes Passed
1916
Passed By
3959
Net Change
-2043
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13111
5K → 10K119749-630#13111#13741
10K → 15K56992-936#13741#14677
15K → 20K641054-990#14677#15667
20K → Half8210+72#15667#15595
Half → 25K135469-334#15595#15929
25K → 30K152455-303#15929#16232
30K → 20M13680+56#16232#16176
20M → 21M21333+180#16176#15996
21M → 35K1426+136#15996#15860
35K → 23M25722+235#15860#15625
23M → 24M2298+221#15625#15404
24M → 40K11937+82#15404#15322
40K → 25.2M5732+25#15322#15297
25.2M → Finish15512+143#15297#15154
TOTALS19163959-2043
📊

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