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BOSTON MARATHON 2023

Kerrilyn Ross

Bib: 29381•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:46
Rank: #24015
Start → 5K
31:46 | 10:13/mi
10K· 6.21 mi
1:07:26
Rank: #25363 (-1348)
5K → 10K
35:40 | 11:29/mi
15K· 9.32 mi
1:45:46
Rank: #25847 (-484)
10K → 15K
38:20 | 12:20/mi
20K· 12.43 mi
2:19:49
Rank: #25528 (+319)
15K → 20K
34:03 | 10:58/mi
Half· 13.11 mi
2:27:38
Rank: #25532 (-4)
20K → Half
7:49 | 11:27/mi
25K· 15.53 mi
2:57:06
Rank: #25501 (+31)
Half → 25K
29:28 | 12:09/mi
30K· 18.64 mi
3:38:46
Rank: #25580 (-79)
25K → 30K
41:40 | 13:25/mi
20M
3:58:20
Rank: #25638 (-58)
30K → 20M
19:34 | 14:24/mi
21M
4:16:29
Rank: #25767 (-129)
20M → 21M
18:09 | 18:09/mi
35K· 21.75 mi
4:26:43
Rank: #25788 (-21)
21M → 35K
10:14 | 13:41/mi
23M
4:45:02
Rank: #25824 (-36)
35K → 23M
18:19 | 14:38/mi
24M
4:58:41
Rank: #25836 (-12)
23M → 24M
13:39 | 13:39/mi
40K· 24.85 mi
5:10:41
Rank: #25843 (-7)
24M → 40K
12:00 | 14:02/mi
25.2M
5:16:59
Rank: #25880 (-37)
40K → 25.2M
6:18 | 18:16/mi
Finish· 26.22 mi
5:29:31
Rank: #25874 (+6)
25.2M → Finish
12:32 | 12:18/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:27:38
Pace11:16 /mi
2nd Half
Distance13.11 mi
Time3:01:53
Pace13:52 /mi
📊Positive Split: 23.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:54:2231:4610:1331:46
10:13
-
10K
6.21 mi12:30:021:07:2610:5135:40
11:29
+1:16
15K
9.32 mi13:08:221:45:4611:2138:20
12:20
+0:51
20K
12.43 mi13:42:252:19:4911:1534:03
10:58
-1:22
Half
13.11 mi13:50:142:27:3811:167:49
11:27
+0:29
25K
15.53 mi14:19:422:57:0611:2429:28
12:09
+0:42
30K
18.64 mi15:01:223:38:4611:4441:40
13:25
+1:16
20M
20.00 mi15:20:563:58:2011:5519:34
14:24
+0:59
21M
21.00 mi15:39:054:16:2912:1318:09
18:09
+3:45
35K
21.75 mi15:49:194:26:4312:1610:14
13:41
-4:28
23M
23.00 mi16:07:384:45:0212:2418:19
14:38
+0:57
24M
24.00 mi16:21:174:58:4112:2713:39
13:39
-0:59
40K
24.85 mi16:33:175:10:4112:3012:00
14:02
+0:23
25.2M
25.20 mi16:39:355:16:5912:356:18
18:16
+4:14
Finish
26.22 mi16:52:075:29:3112:3512:32
12:18
-5:58

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

10:13 /mi

Average Pace

12:35 /mi

Slowest Pace

18:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:46

42% of race

Time at Steady Pace

2:27:59

45% of race

Time at Slower Pace

42:46

13% of race

Average Pace: 12:34 /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 mi11:54:2231:4610:1331:46
10:13
#24015
10K
6.21 mi12:30:021:07:2610:5135:40
11:29
#25363
15K
9.32 mi13:08:221:45:4611:2138:20
12:20
#25847
20K
12.43 mi13:42:252:19:4911:1534:03
10:58
#25528
Half
13.11 mi13:50:142:27:3811:167:49
11:27
#25532
25K
15.53 mi14:19:422:57:0611:2429:28
12:09
#25501
30K
18.64 mi15:01:223:38:4611:4441:40
13:25
#25580
20M
20.00 mi15:20:563:58:2011:5519:34
14:24
#25638
21M
21.00 mi15:39:054:16:2912:1318:09
18:09
#25767
35K
21.75 mi15:49:194:26:4312:1610:14
13:41
#25788
23M
23.00 mi16:07:384:45:0212:2418:19
14:38
#25824
24M
24.00 mi16:21:174:58:4112:2713:39
13:39
#25836
40K
24.85 mi16:33:175:10:4112:3012:00
14:02
#25843
25.2M
25.20 mi16:39:355:16:5912:356:18
18:16
#25880
Finish
26.22 mi16:52:075:29:3112:3512:32
12:18
#25874
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi240159899989926248(Top 99%)11200(Top 98%)11200(Top 229%)
10K6.21 mi3.10 mi25363-134810640-74110640-74125944(Top 97%)11003(Top 96%)11003(Top 225%)
15K9.32 mi3.11 mi25847-48410942-30210942-30226248(Top 99%)11200(Top 98%)11200(Top 229%)
20K12.43 mi3.11 mi25528+31910764+17810764+17824587(Top 92%)10252(Top 90%)10252(Top 210%)
Half13.11 mi0.68 mi25532-410770-610770-625461(Top 96%)10767(Top 94%)10767(Top 220%)
25K15.53 mi2.42 mi25501+3110764+610764+625282(Top 95%)10676(Top 93%)10676(Top 219%)
30K18.64 mi3.11 mi25580-7910817-5310817-5325706(Top 97%)10952(Top 96%)10952(Top 224%)
20M20.00 mi1.36 mi25638-5810852-3510852-3526056(Top 98%)11158(Top 98%)11158(Top 228%)
21M21.00 mi1.00 mi25767-12910929-7710929-7726560(Top 100%)11393(Top 100%)11393(Top 233%)
35K21.75 mi0.75 mi25788-2110944-1510944-1526008(Top 98%)11139(Top 98%)11139(Top 228%)
23M23.00 mi1.25 mi25824-3610968-2410968-2426171(Top 98%)11226(Top 98%)11226(Top 230%)
24M24.00 mi1.00 mi25836-1210976-810976-825898(Top 97%)11114(Top 97%)11114(Top 228%)
40K24.85 mi0.85 mi25843-710984-810984-825712(Top 97%)11032(Top 97%)11032(Top 226%)
25.2M25.20 mi0.35 mi25880-3711003-1911003-1926524(Top 100%)11386(Top 100%)11386(Top 233%)
Finish26.22 mi1.02 mi25874+611002+111002+125518(Top 96%)10930(Top 96%)10930(Top 224%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

26248

Females

11200

F18-39

11200

5K→10K

3.1 - 6.2 mi

Top 97%
×5stories
+79ft-138ft

Overall

25944

Females

11003

F18-39

11003

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

26248

Females

11200

F18-39

11200

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

24587

Females

10252

F18-39

10252

20K→Half

12.4 - 13.1 mi

Top 96%
×2stories
+19ft-37ft

Overall

25461

Females

10767

F18-39

10767

Half→25K

13.1 - 15.5 mi

Top 95%
×4stories
+66ft-88ft

Overall

25282

Females

10676

F18-39

10676

25K→30K

15.5 - 18.6 mi

Top 97%
×9stories
+181ft-148ft

Overall

25706

Females

10952

F18-39

10952

30K→20M

18.6 - 20.0 mi

Top 98%
×5stories
+64ft-50ft

Overall

26056

Females

11158

F18-39

11158

20M→21M

20.0 - 21.0 mi

Top 100%
×8stories
+106ft-24ft

Overall

26560

Females

11393

F18-39

11393

21M→35K

21.0 - 21.8 mi

Top 98%
×7stories
+17ft-86ft

Overall

26008

Females

11139

F18-39

11139

35K→23M

21.8 - 23.0 mi

Top 98%
×5stories
+23ft-63ft

Overall

26171

Females

11226

F18-39

11226

23M→24M

23.0 - 24.0 mi

Top 97%
×6stories
+12ft-82ft

Overall

25898

Females

11114

F18-39

11114

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

25712

Females

11032

F18-39

11032

40K→25.2M

24.9 - 25.2 mi

Top 100%
×1story
+13ft-16ft

Overall

26524

Females

11386

F18-39

11386

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2stories
+22ft-21ft

Overall

25518

Females

10930

F18-39

10930

Passing Analysis

Category:
Athletes Passed
527
Passed By
2386
Net Change
-1859
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24015
5K → 10K41352-1348#24015#25363
10K → 15K11495-484#25363#25847
15K → 20K3190+319#25847#25528
20K → Half1923-4#25528#25532
Half → 25K7443+31#25532#25501
25K → 30K37116-79#25501#25580
30K → 20M1371-58#25580#25638
20M → 21M0129-129#25638#25767
21M → 35K728-21#25767#25788
35K → 23M541-36#25788#25824
23M → 24M1224-12#25824#25836
24M → 40K1219-7#25836#25843
40K → 25.2M037-37#25843#25880
25.2M → Finish148+6#25880#25874
TOTALS5272386-1859
📊

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