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BOSTON MARATHON 2023

Anna Klempner

Bib: 26080•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:56
Rank: #21572
Start → 5K
28:56 | 9:19/mi
10K· 6.21 mi
58:12
Rank: #21939 (-367)
5K → 10K
29:16 | 9:25/mi
15K· 9.32 mi
1:27:41
Rank: #22005 (-66)
10K → 15K
29:29 | 9:29/mi
20K· 12.43 mi
1:57:10
Rank: #21890 (+115)
15K → 20K
29:29 | 9:29/mi
Half· 13.11 mi
2:03:40
Rank: #21890
20K → Half
6:30 | 9:32/mi
25K· 15.53 mi
2:27:17
Rank: #21838 (+52)
Half → 25K
23:37 | 9:44/mi
30K· 18.64 mi
2:57:30
Rank: #21547 (+291)
25K → 30K
30:13 | 9:44/mi
20M
3:10:46
Rank: #21415 (+132)
30K → 20M
13:16 | 9:46/mi
21M
3:21:05
Rank: #21269 (+146)
20M → 21M
10:19 | 10:19/mi
35K· 21.75 mi
3:28:13
Rank: #21215 (+54)
21M → 35K
7:08 | 9:32/mi
23M
3:40:28
Rank: #21077 (+138)
35K → 23M
12:15 | 9:47/mi
24M
3:49:51
Rank: #20978 (+99)
23M → 24M
9:23 | 9:23/mi
40K· 24.85 mi
3:58:00
Rank: #20863 (+115)
24M → 40K
8:09 | 9:32/mi
25.2M
4:01:27
Rank: #20815 (+48)
40K → 25.2M
3:27 | 10:00/mi
Finish· 26.22 mi
4:10:27
Rank: #20706 (+109)
25.2M → Finish
9:00 | 8:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:40
Pace9:26 /mi
2nd Half
Distance13.11 mi
Time2:06:47
Pace9:40 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:1928:569:1928:56
9:19
-
10K
6.21 mi12:21:3558:129:2229:16
9:25
+0:06
15K
9.32 mi12:51:041:27:419:2429:29
9:29
+0:04
20K
12.43 mi13:20:331:57:109:2629:29
9:29
0:00
Half
13.11 mi13:27:032:03:409:266:30
9:32
+0:03
25K
15.53 mi13:50:402:27:179:2923:37
9:44
+0:12
30K
18.64 mi14:20:532:57:309:3130:13
9:44
0:00
20M
20.00 mi14:34:093:10:469:3213:16
9:46
+0:02
21M
21.00 mi14:44:283:21:059:3510:19
10:19
+0:33
35K
21.75 mi14:51:363:28:139:347:08
9:32
-0:47
23M
23.00 mi15:03:513:40:289:3512:15
9:47
+0:15
24M
24.00 mi15:13:143:49:519:359:23
9:23
-0:24
40K
24.85 mi15:21:233:58:009:358:09
9:32
+0:09
25.2M
25.20 mi15:24:504:01:279:353:27
10:00
+0:28
Finish
26.22 mi15:33:504:10:279:349:00
8:50
-1:10

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

8:50 /mi

Average Pace

9:34 /mi

Slowest Pace

10:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:37:20

63% of race

Time at Steady Pace

1:33:07

37% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:33 /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 mi11:52:1928:569:1928:56
9:19
#21572
10K
6.21 mi12:21:3558:129:2229:16
9:25
#21939
15K
9.32 mi12:51:041:27:419:2429:29
9:29
#22005
20K
12.43 mi13:20:331:57:109:2629:29
9:29
#21890
Half
13.11 mi13:27:032:03:409:266:30
9:32
#21890
25K
15.53 mi13:50:402:27:179:2923:37
9:44
#21838
30K
18.64 mi14:20:532:57:309:3130:13
9:44
#21547
20M
20.00 mi14:34:093:10:469:3213:16
9:46
#21415
21M
21.00 mi14:44:283:21:059:3510:19
10:19
#21269
35K
21.75 mi14:51:363:28:139:347:08
9:32
#21215
23M
23.00 mi15:03:513:40:289:3512:15
9:47
#21077
24M
24.00 mi15:13:143:49:519:359:23
9:23
#20978
40K
24.85 mi15:21:233:58:009:358:09
9:32
#20863
25.2M
25.20 mi15:24:504:01:279:353:27
10:00
#20815
Finish
26.22 mi15:33:504:10:279:349:00
8:50
#20706
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi215728678867822232(Top 84%)8922(Top 78%)8922(Top 475%)
10K6.21 mi3.10 mi21939-3678818-1408818-14022278(Top 84%)8968(Top 79%)8968(Top 478%)
15K9.32 mi3.11 mi22005-668842-248842-2422232(Top 84%)8922(Top 78%)8922(Top 475%)
20K12.43 mi3.11 mi21890+1158770+728770+7221526(Top 81%)8535(Top 75%)8535(Top 454%)
Half13.11 mi0.68 mi218908769+18769+122182(Top 83%)8869(Top 78%)8869(Top 472%)
25K15.53 mi2.42 mi21838+528731+388731+3821586(Top 81%)8607(Top 75%)8607(Top 458%)
30K18.64 mi3.11 mi21547+2918584+1478584+14720222(Top 76%)7896(Top 69%)7896(Top 420%)
20M20.00 mi1.36 mi21415+1328521+638521+6319758(Top 74%)7733(Top 68%)7733(Top 412%)
21M21.00 mi1.00 mi21269+1468463+588463+5819086(Top 72%)7391(Top 65%)7391(Top 394%)
35K21.75 mi0.75 mi21215+548442+218442+2119982(Top 75%)7926(Top 69%)7926(Top 422%)
23M23.00 mi1.25 mi21077+1388375+678375+6719404(Top 73%)7636(Top 67%)7636(Top 407%)
24M24.00 mi1.00 mi20978+998333+428333+4218820(Top 71%)7349(Top 64%)7349(Top 391%)
40K24.85 mi0.85 mi20863+1158276+578276+5718473(Top 69%)7205(Top 63%)7205(Top 384%)
25.2M25.20 mi0.35 mi20815+488256+208256+2017481(Top 66%)6714(Top 59%)6714(Top 358%)
Finish26.22 mi1.02 mi20706+1098203+538203+5317226(Top 65%)6503(Top 57%)6503(Top 346%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21stories
+97ft-345ft

Overall

22232

Females

8922

F40-44

8922

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

22278

Females

8968

F40-44

8968

10K→15K

6.2 - 9.3 mi

Top 84%
×3stories
+67ft-78ft

Overall

22232

Females

8922

F40-44

8922

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

21526

Females

8535

F40-44

8535

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

22182

Females

8869

F40-44

8869

Half→25K

13.1 - 15.5 mi

Top 81%
×4stories
+66ft-88ft

Overall

21586

Females

8607

F40-44

8607

25K→30K

15.5 - 18.6 mi

Top 76%
×9stories
+181ft-148ft

Overall

20222

Females

7896

F40-44

7896

30K→20M

18.6 - 20.0 mi

Top 74%
×5stories
+64ft-50ft

Overall

19758

Females

7733

F40-44

7733

20M→21M

20.0 - 21.0 mi

Top 72%
×8stories
+106ft-24ft

Overall

19086

Females

7391

F40-44

7391

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

19982

Females

7926

F40-44

7926

35K→23M

21.8 - 23.0 mi

Top 73%
×5stories
+23ft-63ft

Overall

19404

Females

7636

F40-44

7636

23M→24M

23.0 - 24.0 mi

Top 71%
×6stories
+12ft-82ft

Overall

18820

Females

7349

F40-44

7349

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18473

Females

7205

F40-44

7205

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17481

Females

6714

F40-44

6714

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

17226

Females

6503

F40-44

6503

Passing Analysis

Category:
Athletes Passed
1810
Passed By
944
Net Change
+866
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21572
5K → 10K132499-367#21572#21939
10K → 15K140206-66#21939#22005
15K → 20K19479+115#22005#21890
20K → Half24240#21890#21890
Half → 25K12573+52#21890#21838
25K → 30K30312+291#21838#21547
30K → 20M14917+132#21547#21415
20M → 21M1526+146#21415#21269
21M → 35K617+54#21269#21215
35K → 23M1468+138#21215#21077
23M → 24M1045+99#21077#20978
24M → 40K1183+115#20978#20863
40K → 25.2M502+48#20863#20815
25.2M → Finish1123+109#20815#20706
TOTALS1810944+866
📊

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