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BOSTON MARATHON 2023

Jane Kersh

Bib: 23901•F

MS

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F55-59)
#0 / 815
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:00
Rank: #21639
Start → 5K
29:00 | 9:20/mi
10K· 6.21 mi
58:44
Rank: #22211 (-572)
5K → 10K
29:44 | 9:34/mi
15K· 9.32 mi
1:28:51
Rank: #22409 (-198)
10K → 15K
30:07 | 9:42/mi
20K· 12.43 mi
1:59:58
Rank: #22563 (-154)
15K → 20K
31:07 | 10:01/mi
Half· 13.11 mi
2:06:53
Rank: #22625 (-62)
20K → Half
6:55 | 10:08/mi
25K· 15.53 mi
2:31:15
Rank: #22560 (+65)
Half → 25K
24:22 | 10:03/mi
30K· 18.64 mi
3:03:15
Rank: #22397 (+163)
25K → 30K
32:00 | 10:18/mi
20M
3:17:24
Rank: #22331 (+66)
30K → 20M
14:09 | 10:25/mi
21M
3:28:11
Rank: #22200 (+131)
20M → 21M
10:47 | 10:47/mi
35K· 21.75 mi
3:35:52
Rank: #22180 (+20)
21M → 35K
7:41 | 10:16/mi
23M
3:49:03
Rank: #22138 (+42)
35K → 23M
13:11 | 10:32/mi
24M
3:59:16
Rank: #22105 (+33)
23M → 24M
10:13 | 10:13/mi
40K· 24.85 mi
4:07:55
Rank: #22036 (+69)
24M → 40K
8:39 | 10:07/mi
25.2M
4:11:44
Rank: #22015 (+21)
40K → 25.2M
3:49 | 11:04/mi
Finish· 26.22 mi
4:22:03
Rank: #22021 (-6)
25.2M → Finish
10:19 | 10:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:53
Pace9:41 /mi
2nd Half
Distance13.11 mi
Time2:15:10
Pace10:19 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:2429:009:2029:00
9:20
-
10K
6.21 mi12:14:0858:449:2729:44
9:34
+0:14
15K
9.32 mi12:44:151:28:519:3230:07
9:42
+0:08
20K
12.43 mi13:15:221:59:589:3931:07
10:01
+0:19
Half
13.11 mi13:22:172:06:539:416:55
10:08
+0:07
25K
15.53 mi13:46:392:31:159:4424:22
10:03
-0:05
30K
18.64 mi14:18:393:03:159:5032:00
10:18
+0:15
20M
20.00 mi14:32:483:17:249:5214:09
10:25
+0:07
21M
21.00 mi14:43:353:28:119:5510:47
10:47
+0:22
35K
21.75 mi14:51:163:35:529:567:41
10:16
-0:31
23M
23.00 mi15:04:273:49:039:5813:11
10:32
+0:16
24M
24.00 mi15:14:403:59:169:5810:13
10:13
-0:19
40K
24.85 mi15:23:194:07:559:588:39
10:07
-0:06
25.2M
25.20 mi15:27:084:11:449:593:49
11:04
+0:57
Finish
26.22 mi15:37:274:22:0310:0010:19
10:07
-0:57

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

9:20 /mi

Average Pace

10:00 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:00:26

69% of race

Time at Steady Pace

1:17:48

30% of race

Time at Slower Pace

3:49

1% of race

Average Pace: 10:00 /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 mi11:44:2429:009:2029:00
9:20
#21639
10K
6.21 mi12:14:0858:449:2729:44
9:34
#22211
15K
9.32 mi12:44:151:28:519:3230:07
9:42
#22409
20K
12.43 mi13:15:221:59:589:3931:07
10:01
#22563
Half
13.11 mi13:22:172:06:539:416:55
10:08
#22625
25K
15.53 mi13:46:392:31:159:4424:22
10:03
#22560
30K
18.64 mi14:18:393:03:159:5032:00
10:18
#22397
20M
20.00 mi14:32:483:17:249:5214:09
10:25
#22331
21M
21.00 mi14:43:353:28:119:5510:47
10:47
#22200
35K
21.75 mi14:51:163:35:529:567:41
10:16
#22180
23M
23.00 mi15:04:273:49:039:5813:11
10:32
#22138
24M
24.00 mi15:14:403:59:169:5810:13
10:13
#22105
40K
24.85 mi15:23:194:07:559:588:39
10:07
#22036
25.2M
25.20 mi15:27:084:11:449:593:49
11:04
#22015
Finish
26.22 mi15:37:274:22:0310:0010:19
10:07
#22021
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi216398713871322794(Top 86%)9229(Top 81%)9229(Top 1132%)
10K6.21 mi3.10 mi22211-5728958-2458958-24522711(Top 85%)9194(Top 80%)9194(Top 1128%)
15K9.32 mi3.11 mi22409-1989046-889046-8822794(Top 86%)9229(Top 81%)9229(Top 1132%)
20K12.43 mi3.11 mi22563-1549121-759121-7522956(Top 86%)9334(Top 82%)9334(Top 1145%)
Half13.11 mi0.68 mi22625-629152-319152-3123554(Top 88%)9650(Top 84%)9650(Top 1184%)
25K15.53 mi2.42 mi22560+659138+149138+1422328(Top 84%)9014(Top 79%)9014(Top 1106%)
30K18.64 mi3.11 mi22397+1639060+789060+7821776(Top 82%)8780(Top 77%)8780(Top 1077%)
20M20.00 mi1.36 mi22331+669029+319029+3121547(Top 81%)8725(Top 76%)8725(Top 1071%)
21M21.00 mi1.00 mi22200+1318966+638966+6320355(Top 76%)8123(Top 71%)8123(Top 997%)
35K21.75 mi0.75 mi22180+208967-18967-121940(Top 82%)9019(Top 79%)9019(Top 1107%)
23M23.00 mi1.25 mi22138+428949+188949+1821400(Top 80%)8740(Top 77%)8740(Top 1072%)
24M24.00 mi1.00 mi22105+338940+98940+921384(Top 80%)8778(Top 77%)8778(Top 1077%)
40K24.85 mi0.85 mi22036+698909+318909+3120309(Top 76%)8230(Top 72%)8230(Top 1010%)
25.2M25.20 mi0.35 mi22015+218899+108899+1020639(Top 78%)8400(Top 74%)8400(Top 1031%)
Finish26.22 mi1.02 mi22021-68912-138912-1322104(Top 83%)9170(Top 80%)9170(Top 1125%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21stories
+97ft-345ft

Overall

22794

Females

9229

F55-59

9229

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

22711

Females

9194

F55-59

9194

10K→15K

6.2 - 9.3 mi

Top 86%
×3stories
+67ft-78ft

Overall

22794

Females

9229

F55-59

9229

15K→20K

9.3 - 12.4 mi

Top 86%
×5stories
+106ft-86ft

Overall

22956

Females

9334

F55-59

9334

20K→Half

12.4 - 13.1 mi

Top 88%
×2stories
+19ft-37ft

Overall

23554

Females

9650

F55-59

9650

Half→25K

13.1 - 15.5 mi

Top 84%
×4stories
+66ft-88ft

Overall

22328

Females

9014

F55-59

9014

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

21776

Females

8780

F55-59

8780

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

21547

Females

8725

F55-59

8725

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

20355

Females

8123

F55-59

8123

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

21940

Females

9019

F55-59

9019

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

21400

Females

8740

F55-59

8740

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

21384

Females

8778

F55-59

8778

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20309

Females

8230

F55-59

8230

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20639

Females

8400

F55-59

8400

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2stories
+22ft-21ft

Overall

22104

Females

9170

F55-59

9170

Passing Analysis

Category:
Athletes Passed
1134
Passed By
1516
Net Change
-382
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21639
5K → 10K78650-572#21639#22211
10K → 15K93291-198#22211#22409
15K → 20K84238-154#22409#22563
20K → Half1476-62#22563#22625
Half → 25K12762+65#22625#22560
25K → 30K20744+163#22560#22397
30K → 20M8822+66#22397#22331
20M → 21M14110+131#22331#22200
21M → 35K4020+20#22200#22180
35K → 23M6927+42#22180#22138
23M → 24M5724+33#22138#22105
24M → 40K767+69#22105#22036
40K → 25.2M276+21#22036#22015
25.2M → Finish3339-6#22015#22021
TOTALS11341516-382
📊

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