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BOSTON MARATHON 2023

Jennifer Crawshaw

Bib: 22401•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 44%
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
27:04
Rank: #18960
Start → 5K
27:04 | 8:43/mi
10K· 6.21 mi
53:44
Rank: #18785 (+175)
5K → 10K
26:40 | 8:35/mi
15K· 9.32 mi
1:20:28
Rank: #18655 (+130)
10K → 15K
26:44 | 8:36/mi
20K· 12.43 mi
1:48:31
Rank: #18970 (-315)
15K → 20K
28:03 | 9:02/mi
Half· 13.11 mi
1:54:17
Rank: #18895 (+75)
20K → Half
5:46 | 8:27/mi
25K· 15.53 mi
2:15:05
Rank: #18545 (+350)
Half → 25K
20:48 | 8:35/mi
30K· 18.64 mi
2:42:20
Rank: #18028 (+517)
25K → 30K
27:15 | 8:46/mi
20M
2:54:23
Rank: #17835 (+193)
30K → 20M
12:03 | 8:52/mi
21M
3:03:47
Rank: #17698 (+137)
20M → 21M
9:24 | 9:24/mi
35K· 21.75 mi
3:10:15
Rank: #17624 (+74)
21M → 35K
6:28 | 8:39/mi
23M
3:21:13
Rank: #17452 (+172)
35K → 23M
10:58 | 8:46/mi
24M
3:29:42
Rank: #17331 (+121)
23M → 24M
8:29 | 8:29/mi
40K· 24.85 mi
3:37:04
Rank: #17189 (+142)
24M → 40K
7:22 | 8:37/mi
25.2M
3:40:17
Rank: #17156 (+33)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:48:41
Rank: #17021 (+135)
25.2M → Finish
8:24 | 8:15/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:54:17
Pace8:43 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:54:24
Pace8:44 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:1827:048:4327:04
8:43
-
10K
6.21 mi11:47:5853:448:3926:40
8:35
-0:08
15K
9.32 mi12:14:421:20:288:3826:44
8:36
+0:01
20K
12.43 mi12:42:451:48:318:4428:03
9:02
+0:26
Half
13.11 mi12:48:311:54:178:435:46
8:27
-0:35
25K
15.53 mi13:09:192:15:058:4220:48
8:35
+0:08
30K
18.64 mi13:36:342:42:208:4327:15
8:46
+0:11
20M
20.00 mi13:48:372:54:238:4312:03
8:52
+0:06
21M
21.00 mi13:58:013:03:478:459:24
9:24
+0:32
35K
21.75 mi14:04:293:10:158:456:28
8:39
-0:45
23M
23.00 mi14:15:273:21:138:4510:58
8:46
+0:07
24M
24.00 mi14:23:563:29:428:448:29
8:29
-0:17
40K
24.85 mi14:31:183:37:048:447:22
8:37
+0:08
25.2M
25.20 mi14:34:313:40:178:443:13
9:20
+0:43
Finish
26.22 mi14:42:553:48:418:448:24
8:15
-1:05

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

8:15 /mi

Average Pace

8:44 /mi

Slowest Pace

9:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:36:04

94% of race

Time at Steady Pace

12:37

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:43 /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 mi11:21:1827:048:4327:04
8:43
#18960
10K
6.21 mi11:47:5853:448:3926:40
8:35
#18785
15K
9.32 mi12:14:421:20:288:3826:44
8:36
#18655
20K
12.43 mi12:42:451:48:318:4428:03
9:02
#18970
Half
13.11 mi12:48:311:54:178:435:46
8:27
#18895
25K
15.53 mi13:09:192:15:058:4220:48
8:35
#18545
30K
18.64 mi13:36:342:42:208:4327:15
8:46
#18028
20M
20.00 mi13:48:372:54:238:4312:03
8:52
#17835
21M
21.00 mi13:58:013:03:478:459:24
9:24
#17698
35K
21.75 mi14:04:293:10:158:456:28
8:39
#17624
23M
23.00 mi14:15:273:21:138:4510:58
8:46
#17452
24M
24.00 mi14:23:563:29:428:448:29
8:29
#17331
40K
24.85 mi14:31:183:37:048:447:22
8:37
#17189
25.2M
25.20 mi14:34:313:40:178:443:13
9:20
#17156
Finish
26.22 mi14:42:553:48:418:448:24
8:15
#17021
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi189607178717818479(Top 69%)6782(Top 59%)6782(Top 373%)
10K6.21 mi3.10 mi18785+1757001+1777001+17718766(Top 70%)6936(Top 61%)6936(Top 382%)
15K9.32 mi3.11 mi18655+1306915+866915+8618479(Top 69%)6782(Top 59%)6782(Top 373%)
20K12.43 mi3.11 mi18970-3157101-1867101-18619835(Top 75%)7574(Top 66%)7574(Top 417%)
Half13.11 mi0.68 mi18895+757058+437058+4317496(Top 66%)6179(Top 54%)6179(Top 340%)
25K15.53 mi2.42 mi18545+3506856+2026856+20216708(Top 63%)5842(Top 51%)5842(Top 322%)
30K18.64 mi3.11 mi18028+5176585+2716585+27115898(Top 60%)5444(Top 48%)5444(Top 300%)
20M20.00 mi1.36 mi17835+1936480+1056480+10515851(Top 60%)5487(Top 48%)5487(Top 302%)
21M21.00 mi1.00 mi17698+1376409+716409+7115500(Top 58%)5355(Top 47%)5355(Top 295%)
35K21.75 mi0.75 mi17624+746381+286381+2816146(Top 61%)5785(Top 51%)5785(Top 318%)
23M23.00 mi1.25 mi17452+1726293+886293+8814793(Top 56%)5069(Top 44%)5069(Top 279%)
24M24.00 mi1.00 mi17331+1216226+676226+6714423(Top 54%)4917(Top 43%)4917(Top 271%)
40K24.85 mi0.85 mi17189+1426167+596167+5914098(Top 53%)4809(Top 42%)4809(Top 265%)
25.2M25.20 mi0.35 mi17156+336151+166151+1614420(Top 54%)4990(Top 44%)4990(Top 275%)
Finish26.22 mi1.02 mi17021+1356091+606091+6013769(Top 52%)4628(Top 41%)4628(Top 255%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

18479

Females

6782

F45-49

6782

5K→10K

3.1 - 6.2 mi

Top 70%
×5stories
+79ft-138ft

Overall

18766

Females

6936

F45-49

6936

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

18479

Females

6782

F45-49

6782

15K→20K

9.3 - 12.4 mi

Top 75%
×5stories
+106ft-86ft

Overall

19835

Females

7574

F45-49

7574

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

17496

Females

6179

F45-49

6179

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

16708

Females

5842

F45-49

5842

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

15898

Females

5444

F45-49

5444

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

15851

Females

5487

F45-49

5487

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

15500

Females

5355

F45-49

5355

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

16146

Females

5785

F45-49

5785

35K→23M

21.8 - 23.0 mi

Top 56%
×5stories
+23ft-63ft

Overall

14793

Females

5069

F45-49

5069

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

14423

Females

4917

F45-49

4917

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14098

Females

4809

F45-49

4809

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14420

Females

4990

F45-49

4990

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2stories
+22ft-21ft

Overall

13769

Females

4628

F45-49

4628

Passing Analysis

Category:
Athletes Passed
2868
Passed By
929
Net Change
+1939
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18960
5K → 10K452277+175#18960#18785
10K → 15K253123+130#18785#18655
15K → 20K79394-315#18655#18970
20K → Half849+75#18970#18895
Half → 25K3533+350#18895#18545
25K → 30K53518+517#18545#18028
30K → 20M20310+193#18028#17835
20M → 21M15922+137#17835#17698
21M → 35K9016+74#17698#17624
35K → 23M18816+172#17624#17452
23M → 24M13211+121#17452#17331
24M → 40K15311+142#17331#17189
40K → 25.2M396+33#17189#17156
25.2M → Finish14813+135#17156#17021
TOTALS2868929+1939
📊

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