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BOSTON MARATHON 2023

Jessica Blemberg

Bib: 11206•F

MN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:04
Rank: #20612
Start → 5K
28:04 | 9:02/mi
10K· 6.21 mi
56:04
Rank: #20735 (-123)
5K → 10K
28:00 | 9:01/mi
15K· 9.32 mi
1:24:42
Rank: #20980 (-245)
10K → 15K
28:38 | 9:13/mi
20K· 12.43 mi
1:53:19
Rank: #20858 (+122)
15K → 20K
28:37 | 9:13/mi
Half· 13.11 mi
1:59:34
Rank: #20869 (-11)
20K → Half
6:15 | 9:10/mi
25K· 15.53 mi
2:22:06
Rank: #20754 (+115)
Half → 25K
22:32 | 9:18/mi
30K· 18.64 mi
2:51:59
Rank: #20549 (+205)
25K → 30K
29:53 | 9:37/mi
20M
3:05:15
Rank: #20483 (+66)
30K → 20M
13:16 | 9:46/mi
21M
3:15:49
Rank: #20432 (+51)
20M → 21M
10:34 | 10:34/mi
35K· 21.75 mi
3:23:22
Rank: #20458 (-26)
21M → 35K
7:33 | 10:06/mi
23M
3:35:51
Rank: #20415 (+43)
35K → 23M
12:29 | 9:58/mi
24M
3:45:59
Rank: #20447 (-32)
23M → 24M
10:08 | 10:08/mi
40K· 24.85 mi
3:54:43
Rank: #20438 (+9)
24M → 40K
8:44 | 10:13/mi
25.2M
3:58:29
Rank: #20422 (+16)
40K → 25.2M
3:46 | 10:55/mi
Finish· 26.22 mi
4:08:20
Rank: #20434 (-12)
25.2M → Finish
9:51 | 9:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:34
Pace9:07 /mi
2nd Half
Distance13.11 mi
Time2:08:46
Pace9:49 /mi
📊Positive Split: 7.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:59:1928:049:0228:04
9:02
-
10K
6.21 mi11:27:1956:049:0128:00
9:01
-0:01
15K
9.32 mi11:55:571:24:429:0528:38
9:13
+0:12
20K
12.43 mi12:24:341:53:199:0728:37
9:13
0:00
Half
13.11 mi12:30:491:59:349:076:15
9:10
-0:03
25K
15.53 mi12:53:212:22:069:0922:32
9:18
+0:08
30K
18.64 mi13:23:142:51:599:1429:53
9:37
+0:19
20M
20.00 mi13:36:303:05:159:1613:16
9:46
+0:09
21M
21.00 mi13:47:043:15:499:1910:34
10:34
+0:48
35K
21.75 mi13:54:373:23:229:217:33
10:06
-0:28
23M
23.00 mi14:07:063:35:519:2312:29
9:58
-0:08
24M
24.00 mi14:17:143:45:599:2510:08
10:08
+0:10
40K
24.85 mi14:25:583:54:439:278:44
10:13
+0:05
25.2M
25.20 mi14:29:443:58:299:283:46
10:55
+0:42
Finish
26.22 mi14:39:354:08:209:299:51
9:40
-1:15

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

9:01 /mi

Average Pace

9:29 /mi

Slowest Pace

10:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22:06

57% of race

Time at Steady Pace

53:00

21% of race

Time at Slower Pace

53:14

21% of race

Average Pace: 9:28 /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 mi10:59:1928:049:0228:04
9:02
#20612
10K
6.21 mi11:27:1956:049:0128:00
9:01
#20735
15K
9.32 mi11:55:571:24:429:0528:38
9:13
#20980
20K
12.43 mi12:24:341:53:199:0728:37
9:13
#20858
Half
13.11 mi12:30:491:59:349:076:15
9:10
#20869
25K
15.53 mi12:53:212:22:069:0922:32
9:18
#20754
30K
18.64 mi13:23:142:51:599:1429:53
9:37
#20549
20M
20.00 mi13:36:303:05:159:1613:16
9:46
#20483
21M
21.00 mi13:47:043:15:499:1910:34
10:34
#20432
35K
21.75 mi13:54:373:23:229:217:33
10:06
#20458
23M
23.00 mi14:07:063:35:519:2312:29
9:58
#20415
24M
24.00 mi14:17:143:45:599:2510:08
10:08
#20447
40K
24.85 mi14:25:583:54:439:278:44
10:13
#20438
25.2M
25.20 mi14:29:443:58:299:283:46
10:55
#20422
Finish
26.22 mi14:39:354:08:209:299:51
9:40
#20434
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi206128174817421367(Top 80%)8433(Top 74%)8433(Top 464%)
10K6.21 mi3.10 mi20735-1238162+128162+1220937(Top 79%)8224(Top 72%)8224(Top 453%)
15K9.32 mi3.11 mi20980-2458276-1148276-11421367(Top 80%)8433(Top 74%)8433(Top 464%)
20K12.43 mi3.11 mi20858+1228195+818195+8120629(Top 77%)8022(Top 70%)8022(Top 441%)
Half13.11 mi0.68 mi20869-118195819521052(Top 79%)8276(Top 72%)8276(Top 455%)
25K15.53 mi2.42 mi20754+1158125+708125+7020195(Top 76%)7805(Top 68%)7805(Top 430%)
30K18.64 mi3.11 mi20549+2058035+908035+9019868(Top 75%)7693(Top 67%)7693(Top 423%)
20M20.00 mi1.36 mi20483+668011+248011+2419755(Top 74%)7730(Top 68%)7730(Top 425%)
21M21.00 mi1.00 mi20432+517988+237988+2319811(Top 74%)7825(Top 69%)7825(Top 431%)
35K21.75 mi0.75 mi20458-268019-318019-3121537(Top 81%)8789(Top 77%)8789(Top 484%)
23M23.00 mi1.25 mi20415+438005+148005+1419918(Top 75%)7909(Top 69%)7909(Top 435%)
24M24.00 mi1.00 mi20447-328035-308035-3021157(Top 79%)8643(Top 76%)8643(Top 476%)
40K24.85 mi0.85 mi20438+98031+48031+420531(Top 77%)8347(Top 73%)8347(Top 459%)
25.2M25.20 mi0.35 mi20422+168034-38034-320301(Top 76%)8214(Top 72%)8214(Top 452%)
Finish26.22 mi1.02 mi20434-128046-128046-1220696(Top 78%)8406(Top 74%)8406(Top 463%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21stories
+97ft-345ft

Overall

21367

Females

8433

F45-49

8433

5K→10K

3.1 - 6.2 mi

Top 79%
×5stories
+79ft-138ft

Overall

20937

Females

8224

F45-49

8224

10K→15K

6.2 - 9.3 mi

Top 80%
×3stories
+67ft-78ft

Overall

21367

Females

8433

F45-49

8433

15K→20K

9.3 - 12.4 mi

Top 77%
×5stories
+106ft-86ft

Overall

20629

Females

8022

F45-49

8022

20K→Half

12.4 - 13.1 mi

Top 79%
×2stories
+19ft-37ft

Overall

21052

Females

8276

F45-49

8276

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

20195

Females

7805

F45-49

7805

25K→30K

15.5 - 18.6 mi

Top 75%
×9stories
+181ft-148ft

Overall

19868

Females

7693

F45-49

7693

30K→20M

18.6 - 20.0 mi

Top 74%
×5stories
+64ft-50ft

Overall

19755

Females

7730

F45-49

7730

20M→21M

20.0 - 21.0 mi

Top 74%
×8stories
+106ft-24ft

Overall

19811

Females

7825

F45-49

7825

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

21537

Females

8789

F45-49

8789

35K→23M

21.8 - 23.0 mi

Top 75%
×5stories
+23ft-63ft

Overall

19918

Females

7909

F45-49

7909

23M→24M

23.0 - 24.0 mi

Top 79%
×6stories
+12ft-82ft

Overall

21157

Females

8643

F45-49

8643

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20531

Females

8347

F45-49

8347

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20301

Females

8214

F45-49

8214

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

20696

Females

8406

F45-49

8406

Passing Analysis

Category:
Athletes Passed
1451
Passed By
1273
Net Change
+178
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20612
5K → 10K235358-123#20612#20735
10K → 15K82327-245#20735#20980
15K → 20K21896+122#20980#20858
20K → Half3041-11#20858#20869
Half → 25K16045+115#20869#20754
25K → 30K25146+205#20754#20549
30K → 20M10438+66#20549#20483
20M → 21M9746+51#20483#20432
21M → 35K3460-26#20432#20458
35K → 23M8845+43#20458#20415
23M → 24M3668-32#20415#20447
24M → 40K4839+9#20447#20438
40K → 25.2M3115+16#20438#20422
25.2M → Finish3749-12#20422#20434
TOTALS14511273+178
📊

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