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BOSTON MARATHON 2023

Leah Rosenblatt

Bib: 29209•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
33:32
Rank: #25360
Start → 5K
33:32 | 10:48/mi
10K· 6.21 mi
1:07:21
Rank: #25340 (+20)
5K → 10K
33:49 | 10:53/mi
15K· 9.32 mi
1:41:52
Rank: #25350 (-10)
10K → 15K
34:31 | 11:07/mi
20K· 12.43 mi
2:17:11
Rank: #25288 (+62)
15K → 20K
35:19 | 11:22/mi
Half· 13.11 mi
2:24:49
Rank: #25279 (+9)
20K → Half
7:38 | 11:11/mi
25K· 15.53 mi
2:52:40
Rank: #25172 (+107)
Half → 25K
27:51 | 11:29/mi
30K· 18.64 mi
3:30:09
Rank: #25057 (+115)
25K → 30K
37:29 | 12:04/mi
20M
3:45:55
Rank: #24982 (+75)
30K → 20M
15:46 | 11:36/mi
21M
3:58:19
Rank: #24883 (+99)
20M → 21M
12:24 | 12:24/mi
35K· 21.75 mi
4:06:08
Rank: #24809 (+74)
21M → 35K
7:49 | 10:27/mi
23M
4:19:49
Rank: #24699 (+110)
35K → 23M
13:41 | 10:56/mi
24M
4:30:16
Rank: #24598 (+101)
23M → 24M
10:27 | 10:27/mi
40K· 24.85 mi
4:39:17
Rank: #24502 (+96)
24M → 40K
9:01 | 10:33/mi
25.2M
4:43:13
Rank: #24475 (+27)
40K → 25.2M
3:56 | 11:24/mi
Finish· 26.22 mi
4:53:51
Rank: #24431 (+44)
25.2M → Finish
10:38 | 10:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:24:49
Pace11:03 /mi
2nd Half
Distance13.11 mi
Time2:29:02
Pace11:22 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:3433:3210:4833:32
10:48
-
10K
6.21 mi12:25:231:07:2110:5033:49
10:53
+0:05
15K
9.32 mi12:59:541:41:5210:5634:31
11:07
+0:14
20K
12.43 mi13:35:132:17:1111:0235:19
11:22
+0:15
Half
13.11 mi13:42:512:24:4911:037:38
11:11
-0:11
25K
15.53 mi14:10:422:52:4011:0727:51
11:29
+0:18
30K
18.64 mi14:48:113:30:0911:1637:29
12:04
+0:35
20M
20.00 mi15:03:573:45:5511:1815:46
11:36
-0:28
21M
21.00 mi15:16:213:58:1911:2112:24
12:24
+0:48
35K
21.75 mi15:24:104:06:0811:197:49
10:27
-1:57
23M
23.00 mi15:37:514:19:4911:1813:41
10:56
+0:29
24M
24.00 mi15:48:184:30:1611:1610:27
10:27
-0:29
40K
24.85 mi15:57:194:39:1711:149:01
10:33
+0:06
25.2M
25.20 mi16:01:154:43:1311:143:56
11:24
+0:51
Finish
26.22 mi16:11:534:53:5111:1310:38
10:26
-0:58

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

10:26 /mi

Average Pace

11:13 /mi

Slowest Pace

12:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:21

68% of race

Time at Steady Pace

1:21:06

28% of race

Time at Slower Pace

12:24

4% of race

Average Pace: 11:12 /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 mi11:51:3433:3210:4833:32
10:48
#25360
10K
6.21 mi12:25:231:07:2110:5033:49
10:53
#25340
15K
9.32 mi12:59:541:41:5210:5634:31
11:07
#25350
20K
12.43 mi13:35:132:17:1111:0235:19
11:22
#25288
Half
13.11 mi13:42:512:24:4911:037:38
11:11
#25279
25K
15.53 mi14:10:422:52:4011:0727:51
11:29
#25172
30K
18.64 mi14:48:113:30:0911:1637:29
12:04
#25057
20M
20.00 mi15:03:573:45:5511:1815:46
11:36
#24982
21M
21.00 mi15:16:213:58:1911:2112:24
12:24
#24883
35K
21.75 mi15:24:104:06:0811:197:49
10:27
#24809
23M
23.00 mi15:37:514:19:4911:1813:41
10:56
#24699
24M
24.00 mi15:48:184:30:1611:1610:27
10:27
#24598
40K
24.85 mi15:57:194:39:1711:149:01
10:33
#24502
25.2M
25.20 mi16:01:154:43:1311:143:56
11:24
#24475
Finish
26.22 mi16:11:534:53:5111:1310:38
10:26
#24431
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25360106491064925318(Top 95%)10640(Top 93%)10640(Top 218%)
10K6.21 mi3.10 mi25340+2010627+2210627+2225323(Top 95%)10621(Top 93%)10621(Top 217%)
15K9.32 mi3.11 mi25350-1010645-1810645-1825318(Top 95%)10640(Top 93%)10640(Top 218%)
20K12.43 mi3.11 mi25288+6210616+2910616+2925086(Top 94%)10532(Top 92%)10532(Top 216%)
Half13.11 mi0.68 mi25279+910618-210618-225190(Top 95%)10602(Top 93%)10602(Top 217%)
25K15.53 mi2.42 mi25172+10710567+5110567+5124649(Top 93%)10311(Top 90%)10311(Top 211%)
30K18.64 mi3.11 mi25057+11510519+4810519+4824570(Top 92%)10321(Top 90%)10321(Top 211%)
20M20.00 mi1.36 mi24982+7510485+3410485+3423681(Top 89%)9890(Top 87%)9890(Top 202%)
21M21.00 mi1.00 mi24883+9910439+4610439+4623339(Top 88%)9726(Top 85%)9726(Top 199%)
35K21.75 mi0.75 mi24809+7410400+3910400+3922307(Top 84%)9225(Top 81%)9225(Top 189%)
23M23.00 mi1.25 mi24699+11010346+5410346+5422216(Top 83%)9179(Top 80%)9179(Top 188%)
24M24.00 mi1.00 mi24598+10110301+4510301+4521941(Top 82%)9077(Top 79%)9077(Top 186%)
40K24.85 mi0.85 mi24502+9610252+4910252+4921344(Top 80%)8809(Top 77%)8809(Top 180%)
25.2M25.20 mi0.35 mi24475+2710239+1310239+1321408(Top 80%)8827(Top 77%)8827(Top 181%)
Finish26.22 mi1.02 mi24431+4410221+1810221+1822887(Top 86%)9598(Top 84%)9598(Top 197%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21stories
+97ft-345ft

Overall

25318

Females

10640

F18-39

10640

5K→10K

3.1 - 6.2 mi

Top 95%
×5stories
+79ft-138ft

Overall

25323

Females

10621

F18-39

10621

10K→15K

6.2 - 9.3 mi

Top 95%
×3stories
+67ft-78ft

Overall

25318

Females

10640

F18-39

10640

15K→20K

9.3 - 12.4 mi

Top 94%
×5stories
+106ft-86ft

Overall

25086

Females

10532

F18-39

10532

20K→Half

12.4 - 13.1 mi

Top 95%
×2stories
+19ft-37ft

Overall

25190

Females

10602

F18-39

10602

Half→25K

13.1 - 15.5 mi

Top 93%
×4stories
+66ft-88ft

Overall

24649

Females

10311

F18-39

10311

25K→30K

15.5 - 18.6 mi

Top 92%
×9stories
+181ft-148ft

Overall

24570

Females

10321

F18-39

10321

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

23681

Females

9890

F18-39

9890

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

23339

Females

9726

F18-39

9726

21M→35K

21.0 - 21.8 mi

Top 84%
×7stories
+17ft-86ft

Overall

22307

Females

9225

F18-39

9225

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

22216

Females

9179

F18-39

9179

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

21941

Females

9077

F18-39

9077

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

21344

Females

8809

F18-39

8809

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21408

Females

8827

F18-39

8827

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2stories
+22ft-21ft

Overall

22887

Females

9598

F18-39

9598

Passing Analysis

Category:
Athletes Passed
1331
Passed By
402
Net Change
+929
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25360
5K → 10K165145+20#25360#25340
10K → 15K99109-10#25340#25350
15K → 20K11957+62#25350#25288
20K → Half2011+9#25288#25279
Half → 25K13427+107#25279#25172
25K → 30K14227+115#25172#25057
30K → 20M8510+75#25057#24982
20M → 21M1056+99#24982#24883
21M → 35K740+74#24883#24809
35K → 23M1144+110#24809#24699
23M → 24M1010+101#24699#24598
24M → 40K960+96#24598#24502
40K → 25.2M270+27#24502#24475
25.2M → Finish506+44#24475#24431
TOTALS1331402+929
📊

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