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BOSTON MARATHON 2023

Sarah Korenbaum

Bib: 16670•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 48%
Gender (Female)
#0 / 11423
Top 32%
Masters (Masters Women)
#0 / 6539
Top 18%
Division (F40-44)
#0 / 1878
Top 34%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:48
Rank: #16181
Start → 5K
25:48 | 8:18/mi
10K· 6.21 mi
51:08
Rank: #16025 (+156)
5K → 10K
25:20 | 8:09/mi
15K· 9.32 mi
1:16:18
Rank: #15719 (+306)
10K → 15K
25:10 | 8:06/mi
20K· 12.43 mi
1:42:01
Rank: #15638 (+81)
15K → 20K
25:43 | 8:17/mi
Half· 13.11 mi
1:47:34
Rank: #15628 (+10)
20K → Half
5:33 | 8:08/mi
25K· 15.53 mi
2:07:21
Rank: #15339 (+289)
Half → 25K
19:47 | 8:10/mi
30K· 18.64 mi
2:32:40
Rank: #14726 (+613)
25K → 30K
25:19 | 8:09/mi
20M
2:43:36
Rank: #14413 (+313)
30K → 20M
10:56 | 8:03/mi
21M
2:51:44
Rank: #14049 (+364)
20M → 21M
8:08 | 8:08/mi
35K· 21.75 mi
2:57:39
Rank: #13934 (+115)
21M → 35K
5:55 | 7:55/mi
23M
3:07:38
Rank: #13649 (+285)
35K → 23M
9:59 | 7:58/mi
24M
3:15:15
Rank: #13381 (+268)
23M → 24M
7:37 | 7:37/mi
40K· 24.85 mi
3:21:50
Rank: #13163 (+218)
24M → 40K
6:35 | 7:42/mi
25.2M
3:24:37
Rank: #13043 (+120)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
3:32:08
Rank: #12834 (+209)
25.2M → Finish
7:31 | 7:23/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:47:34
Pace8:12 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:44:34
Pace7:59 /mi
📊Negative Split: 2.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4525:488:1825:48
8:18
-
10K
6.21 mi11:44:0551:088:1425:20
8:09
-0:09
15K
9.32 mi12:09:151:16:188:1125:10
8:06
-0:03
20K
12.43 mi12:34:581:42:018:1325:43
8:17
+0:11
Half
13.11 mi12:40:311:47:348:125:33
8:08
-0:09
25K
15.53 mi13:00:182:07:218:1219:47
8:10
+0:02
30K
18.64 mi13:25:372:32:408:1125:19
8:09
-0:01
20M
20.00 mi13:36:332:43:368:1110:56
8:03
-0:06
21M
21.00 mi13:44:412:51:448:118:08
8:08
+0:05
35K
21.75 mi13:50:362:57:398:105:55
7:55
-0:13
23M
23.00 mi14:00:353:07:388:099:59
7:58
+0:03
24M
24.00 mi14:08:123:15:158:087:37
7:37
-0:21
40K
24.85 mi14:14:473:21:508:076:35
7:42
+0:05
25.2M
25.20 mi14:17:343:24:378:072:47
8:04
+0:22
Finish
26.22 mi14:25:053:32:088:067:31
7:23
-0:41

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

7:23 /mi

Average Pace

8:06 /mi

Slowest Pace

8:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:30

36% of race

Time at Steady Pace

2:15:38

64% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:05 /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 mi11:18:4525:488:1825:48
8:18
#16181
10K
6.21 mi11:44:0551:088:1425:20
8:09
#16025
15K
9.32 mi12:09:151:16:188:1125:10
8:06
#15719
20K
12.43 mi12:34:581:42:018:1325:43
8:17
#15638
Half
13.11 mi12:40:311:47:348:125:33
8:08
#15628
25K
15.53 mi13:00:182:07:218:1219:47
8:10
#15339
30K
18.64 mi13:25:372:32:408:1125:19
8:09
#14726
20M
20.00 mi13:36:332:43:368:1110:56
8:03
#14413
21M
21.00 mi13:44:412:51:448:118:08
8:08
#14049
35K
21.75 mi13:50:362:57:398:105:55
7:55
#13934
23M
23.00 mi14:00:353:07:388:099:59
7:58
#13649
24M
24.00 mi14:08:123:15:158:087:37
7:37
#13381
40K
24.85 mi14:14:473:21:508:076:35
7:42
#13163
25.2M
25.20 mi14:17:343:24:378:072:47
8:04
#13043
Finish
26.22 mi14:25:053:32:088:067:31
7:23
#12834
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi161815391539115174(Top 57%)4774(Top 42%)4774(Top 254%)
10K6.21 mi3.10 mi16025+1565291+1005291+10015931(Top 60%)5228(Top 46%)5228(Top 278%)
15K9.32 mi3.11 mi15719+3065104+1875104+18715174(Top 57%)4774(Top 42%)4774(Top 254%)
20K12.43 mi3.11 mi15638+815078+265078+2615464(Top 58%)5003(Top 44%)5003(Top 266%)
Half13.11 mi0.68 mi15628+105075+35075+315338(Top 58%)4872(Top 43%)4872(Top 259%)
25K15.53 mi2.42 mi15339+2894923+1524923+15213940(Top 52%)4176(Top 37%)4176(Top 222%)
30K18.64 mi3.11 mi14726+6134571+3524571+35212000(Top 45%)3187(Top 28%)3187(Top 170%)
20M20.00 mi1.36 mi14413+3134426+1454426+14510641(Top 40%)2567(Top 22%)2567(Top 137%)
21M21.00 mi1.00 mi14049+3644213+2134213+2138243(Top 31%)1639(Top 14%)1639(Top 87%)
35K21.75 mi0.75 mi13934+1154158+554158+5511520(Top 43%)3160(Top 28%)3160(Top 168%)
23M23.00 mi1.25 mi13649+2854007+1514007+1519604(Top 36%)2314(Top 20%)2314(Top 123%)
24M24.00 mi1.00 mi13381+2683861+1463861+1468569(Top 32%)1921(Top 17%)1921(Top 102%)
40K24.85 mi0.85 mi13163+2183761+1003761+1008032(Top 30%)1770(Top 15%)1770(Top 94%)
25.2M25.20 mi0.35 mi13043+1203711+503711+507043(Top 26%)1466(Top 13%)1466(Top 78%)
Finish26.22 mi1.02 mi12834+2093603+1083603+1087671(Top 29%)1700(Top 15%)1700(Top 91%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

15174

Females

4774

F40-44

4774

5K→10K

3.1 - 6.2 mi

Top 60%
×5stories
+79ft-138ft

Overall

15931

Females

5228

F40-44

5228

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

15174

Females

4774

F40-44

4774

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15464

Females

5003

F40-44

5003

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

15338

Females

4872

F40-44

4872

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

13940

Females

4176

F40-44

4176

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

12000

Females

3187

F40-44

3187

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

10641

Females

2567

F40-44

2567

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8243

Females

1639

F40-44

1639

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

11520

Females

3160

F40-44

3160

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9604

Females

2314

F40-44

2314

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

8569

Females

1921

F40-44

1921

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8032

Females

1770

F40-44

1770

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7043

Females

1466

F40-44

1466

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

7671

Females

1700

F40-44

1700

Passing Analysis

Category:
Athletes Passed
3859
Passed By
512
Net Change
+3347
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16181
5K → 10K375219+156#16181#16025
10K → 15K38478+306#16025#15719
15K → 20K217136+81#15719#15638
20K → Half3727+10#15638#15628
Half → 25K31223+289#15628#15339
25K → 30K6218+613#15339#14726
30K → 20M3163+313#14726#14413
20M → 21M3673+364#14413#14049
21M → 35K1227+115#14049#13934
35K → 23M2883+285#13934#13649
23M → 24M2702+268#13649#13381
24M → 40K2202+218#13381#13163
40K → 25.2M1200+120#13163#13043
25.2M → Finish2101+209#13043#12834
TOTALS3859512+3347
📊

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