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BOSTON MARATHON 2023

Katie Jerrett

Bib: 15979•F

NS

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 14%
Division (F18-39)
#0 / 4884
Top 26%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:23
Rank: #12825
Start → 5K
24:23 | 7:51/mi
10K· 6.21 mi
48:39
Rank: #12972 (-147)
5K → 10K
24:16 | 7:49/mi
15K· 9.32 mi
1:12:28
Rank: #12460 (+512)
10K → 15K
23:49 | 7:40/mi
20K· 12.43 mi
1:36:19
Rank: #11968 (+492)
15K → 20K
23:51 | 7:41/mi
Half· 13.11 mi
1:41:34
Rank: #11967 (+1)
20K → Half
5:15 | 7:42/mi
25K· 15.53 mi
2:00:09
Rank: #11558 (+409)
Half → 25K
18:35 | 7:40/mi
30K· 18.64 mi
2:24:07
Rank: #11013 (+545)
25K → 30K
23:58 | 7:43/mi
20M
2:34:27
Rank: #10727 (+286)
30K → 20M
10:20 | 7:36/mi
21M
2:42:07
Rank: #10391 (+336)
20M → 21M
7:40 | 7:40/mi
35K· 21.75 mi
2:47:36
Rank: #10250 (+141)
21M → 35K
5:29 | 7:20/mi
23M
2:56:53
Rank: #9925 (+325)
35K → 23M
9:17 | 7:25/mi
24M
3:04:00
Rank: #9665 (+260)
23M → 24M
7:07 | 7:07/mi
40K· 24.85 mi
3:10:06
Rank: #9440 (+225)
24M → 40K
6:06 | 7:08/mi
25.2M
3:12:37
Rank: #9307 (+133)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
3:19:22
Rank: #9000 (+307)
25.2M → Finish
6:45 | 6:37/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:41:34
Pace7:45 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:37:48
Pace7:28 /mi
📊Negative Split: 3.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3924:237:5124:23
7:51
-
10K
6.21 mi11:16:5548:397:5024:16
7:49
-0:02
15K
9.32 mi11:40:441:12:287:4623:49
7:40
-0:09
20K
12.43 mi12:04:351:36:197:4523:51
7:41
+0:01
Half
13.11 mi12:09:501:41:347:455:15
7:42
+0:01
25K
15.53 mi12:28:252:00:097:4418:35
7:40
-0:02
30K
18.64 mi12:52:232:24:077:4423:58
7:43
+0:03
20M
20.00 mi13:02:432:34:277:4310:20
7:36
-0:07
21M
21.00 mi13:10:232:42:077:437:40
7:40
+0:04
35K
21.75 mi13:15:522:47:367:425:29
7:20
-0:20
23M
23.00 mi13:25:092:56:537:419:17
7:25
+0:05
24M
24.00 mi13:32:163:04:007:407:07
7:07
-0:18
40K
24.85 mi13:38:223:10:067:396:06
7:08
+0:01
25.2M
25.20 mi13:40:533:12:377:392:31
7:18
+0:10
Finish
26.22 mi13:47:383:19:227:376:45
6:37
-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

6:37 /mi

Average Pace

7:37 /mi

Slowest Pace

7:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

19:58

10% of race

Time at Steady Pace

2:10:45

66% of race

Time at Slower Pace

48:39

24% of race

Average Pace: 7:36 /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 mi10:52:3924:237:5124:23
7:51
#12825
10K
6.21 mi11:16:5548:397:5024:16
7:49
#12972
15K
9.32 mi11:40:441:12:287:4623:49
7:40
#12460
20K
12.43 mi12:04:351:36:197:4523:51
7:41
#11968
Half
13.11 mi12:09:501:41:347:455:15
7:42
#11967
25K
15.53 mi12:28:252:00:097:4418:35
7:40
#11558
30K
18.64 mi12:52:232:24:077:4423:58
7:43
#11013
20M
20.00 mi13:02:432:34:277:4310:20
7:36
#10727
21M
21.00 mi13:10:232:42:077:437:40
7:40
#10391
35K
21.75 mi13:15:522:47:367:425:29
7:20
#10250
23M
23.00 mi13:25:092:56:537:419:17
7:25
#9925
24M
24.00 mi13:32:163:04:007:407:07
7:07
#9665
40K
24.85 mi13:38:223:10:067:396:06
7:08
#9440
25.2M
25.20 mi13:40:533:12:377:392:31
7:18
#9307
Finish
26.22 mi13:47:383:19:227:376:45
6:37
#9000
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi128253331333111554(Top 43%)2652(Top 23%)2652(Top 54%)
10K6.21 mi3.10 mi12972-1473430-993430-9913216(Top 50%)3556(Top 31%)3556(Top 73%)
15K9.32 mi3.11 mi12460+5123148+2823148+28211554(Top 43%)2652(Top 23%)2652(Top 54%)
20K12.43 mi3.11 mi11968+4922893+2552893+25510728(Top 40%)2265(Top 20%)2265(Top 46%)
Half13.11 mi0.68 mi11967+12895-22895-211847(Top 45%)2799(Top 25%)2799(Top 57%)
25K15.53 mi2.42 mi11558+4092667+2282667+22810041(Top 38%)2017(Top 18%)2017(Top 41%)
30K18.64 mi3.11 mi11013+5452411+2562411+2568754(Top 33%)1615(Top 14%)1615(Top 33%)
20M20.00 mi1.36 mi10727+2862298+1132298+1137553(Top 28%)1241(Top 11%)1241(Top 25%)
21M21.00 mi1.00 mi10391+3362145+1532145+1535486(Top 21%)668(Top 6%)668(Top 14%)
35K21.75 mi0.75 mi10250+1412088+572088+577384(Top 28%)1259(Top 11%)1259(Top 26%)
23M23.00 mi1.25 mi9925+3251957+1311957+1315988(Top 22%)817(Top 7%)817(Top 17%)
24M24.00 mi1.00 mi9665+2601870+871870+875323(Top 20%)667(Top 6%)667(Top 14%)
40K24.85 mi0.85 mi9440+2251806+641806+644594(Top 17%)544(Top 5%)544(Top 11%)
25.2M25.20 mi0.35 mi9307+1331757+491757+493042(Top 11%)271(Top 2%)271(Top 6%)
Finish26.22 mi1.02 mi9000+3071646+1111646+1113149(Top 12%)317(Top 3%)317(Top 6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

11554

Females

2652

F18-39

2652

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

13216

Females

3556

F18-39

3556

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

11554

Females

2652

F18-39

2652

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

10728

Females

2265

F18-39

2265

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

11847

Females

2799

F18-39

2799

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10041

Females

2017

F18-39

2017

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

8754

Females

1615

F18-39

1615

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7553

Females

1241

F18-39

1241

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5486

Females

668

F18-39

668

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7384

Females

1259

F18-39

1259

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

5988

Females

817

F18-39

817

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5323

Females

667

F18-39

667

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4594

Females

544

F18-39

544

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3042

Females

271

F18-39

271

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3149

Females

317

F18-39

317

Passing Analysis

Category:
Athletes Passed
4341*
Passed By
516
Net Change
+3825
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12825
5K → 10K250397-147#12825#12972
10K → 15K56654+512#12972#12460
15K → 20K51018+492#12460#11968
20K → Half2423+1#11968#11967
Half → 25K4123+409#11967#11558
25K → 30K55914+545#11558#11013
30K → 20M288*2+286#11013#10727
20M → 21M3360+336#10727#10391
21M → 35K1465+141#10391#10250
35K → 23M325*0+325#10250#9925
23M → 24M2600+260#9925#9665
24M → 40K225*0+225#9665#9440
40K → 25.2M1330+133#9440#9307
25.2M → Finish3070+307#9307#9000
TOTALS4341*516+3825

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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