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BOSTON MARATHON 2023

Kayla Gretzky

Bib: 30177•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
32:38
Rank: #24727
Start → 5K
32:38 | 10:30/mi
10K· 6.21 mi
1:06:15
Rank: #25023 (-296)
5K → 10K
33:37 | 10:49/mi
15K· 9.32 mi
1:41:42
Rank: #25321 (-298)
10K → 15K
35:27 | 11:25/mi
20K· 12.43 mi
2:20:07
Rank: #25559 (-238)
15K → 20K
38:25 | 12:22/mi
Half· 13.11 mi
2:27:56
Rank: #25564 (-5)
20K → Half
7:49 | 11:27/mi
25K· 15.53 mi
2:59:40
Rank: #25664 (-100)
Half → 25K
31:44 | 13:05/mi
30K· 18.64 mi
3:40:43
Rank: #25670 (-6)
25K → 30K
41:03 | 13:13/mi
20M
3:58:42
Rank: #25655 (+15)
30K → 20M
17:59 | 13:14/mi
21M
4:12:27
Rank: #25618 (+37)
20M → 21M
13:45 | 13:45/mi
35K· 21.75 mi
4:21:38
Rank: #25604 (+14)
21M → 35K
9:11 | 12:17/mi
23M
4:37:33
Rank: #25564 (+40)
35K → 23M
15:55 | 12:43/mi
24M
4:50:35
Rank: #25581 (-17)
23M → 24M
13:02 | 13:02/mi
40K· 24.85 mi
5:01:57
Rank: #25570 (+11)
24M → 40K
11:22 | 13:18/mi
25.2M
5:06:39
Rank: #25557 (+13)
40K → 25.2M
4:42 | 13:38/mi
Finish· 26.22 mi
5:18:37
Rank: #25544 (+13)
25.2M → Finish
11:58 | 11:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:27:56
Pace11:17 /mi
2nd Half
Distance13.11 mi
Time2:50:41
Pace13:01 /mi
📊Positive Split: 15.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:2032:3810:3032:38
10:30
-
10K
6.21 mi12:24:571:06:1510:4033:37
10:49
+0:19
15K
9.32 mi13:00:241:41:4210:5535:27
11:25
+0:36
20K
12.43 mi13:38:492:20:0711:1638:25
12:22
+0:57
Half
13.11 mi13:46:382:27:5611:177:49
11:27
-0:55
25K
15.53 mi14:18:222:59:4011:3431:44
13:05
+1:38
30K
18.64 mi14:59:253:40:4311:5041:03
13:13
+0:08
20M
20.00 mi15:17:243:58:4211:5617:59
13:14
+0:01
21M
21.00 mi15:31:094:12:2712:0113:45
13:45
+0:31
35K
21.75 mi15:40:204:21:3812:029:11
12:17
-1:28
23M
23.00 mi15:56:154:37:3312:0415:55
12:43
+0:26
24M
24.00 mi16:09:174:50:3512:0613:02
13:02
+0:19
40K
24.85 mi16:20:395:01:5712:0911:22
13:18
+0:16
25.2M
25.20 mi16:25:215:06:3912:104:42
13:38
+0:20
Finish
26.22 mi16:37:195:18:3712:1011:58
11:45
-1:53

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

10:30 /mi

Average Pace

12:10 /mi

Slowest Pace

13:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:29

38% of race

Time at Steady Pace

1:48:17

34% of race

Time at Slower Pace

1:28:51

28% of race

Average Pace: 12:09 /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 mi11:51:2032:3810:3032:38
10:30
#24727
10K
6.21 mi12:24:571:06:1510:4033:37
10:49
#25023
15K
9.32 mi13:00:241:41:4210:5535:27
11:25
#25321
20K
12.43 mi13:38:492:20:0711:1638:25
12:22
#25559
Half
13.11 mi13:46:382:27:5611:177:49
11:27
#25564
25K
15.53 mi14:18:222:59:4011:3431:44
13:05
#25664
30K
18.64 mi14:59:253:40:4311:5041:03
13:13
#25670
20M
20.00 mi15:17:243:58:4211:5617:59
13:14
#25655
21M
21.00 mi15:31:094:12:2712:0113:45
13:45
#25618
35K
21.75 mi15:40:204:21:3812:029:11
12:17
#25604
23M
23.00 mi15:56:154:37:3312:0415:55
12:43
#25564
24M
24.00 mi16:09:174:50:3512:0613:02
13:02
#25581
40K
24.85 mi16:20:395:01:5712:0911:22
13:18
#25570
25.2M
25.20 mi16:25:215:06:3912:104:42
13:38
#25557
Finish
26.22 mi16:37:195:18:3712:1011:58
11:45
#25544
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24727102881028825623(Top 96%)10823(Top 95%)10823(Top 222%)
10K6.21 mi3.10 mi25023-29610447-15910447-15925224(Top 95%)10566(Top 92%)10566(Top 216%)
15K9.32 mi3.11 mi25321-29810625-17810625-17825623(Top 96%)10823(Top 95%)10823(Top 222%)
20K12.43 mi3.11 mi25559-23810784-15910784-15925875(Top 97%)10983(Top 96%)10983(Top 225%)
Half13.11 mi0.68 mi25564-510787-310787-325458(Top 96%)10764(Top 94%)10764(Top 220%)
25K15.53 mi2.42 mi25664-10010856-6910856-6925914(Top 97%)11031(Top 97%)11031(Top 226%)
30K18.64 mi3.11 mi25670-610868-1210868-1225582(Top 96%)10884(Top 95%)10884(Top 223%)
20M20.00 mi1.36 mi25655+1510861+710861+725350(Top 95%)10780(Top 94%)10780(Top 221%)
21M21.00 mi1.00 mi25618+3710841+2010841+2024836(Top 93%)10522(Top 92%)10522(Top 215%)
35K21.75 mi0.75 mi25604+14108411084124959(Top 94%)10637(Top 93%)10637(Top 218%)
23M23.00 mi1.25 mi25564+4010826+1510826+1524816(Top 93%)10542(Top 92%)10542(Top 216%)
24M24.00 mi1.00 mi25581-1710841-1510841-1525496(Top 96%)10926(Top 96%)10926(Top 224%)
40K24.85 mi0.85 mi25570+1110839+210839+225196(Top 95%)10773(Top 94%)10773(Top 221%)
25.2M25.20 mi0.35 mi25557+1310836+310836+324675(Top 93%)10530(Top 92%)10530(Top 216%)
Finish26.22 mi1.02 mi25544+13108361083624989(Top 94%)10661(Top 93%)10661(Top 218%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 96%
×21stories
+97ft-345ft

Overall

25623

Females

10823

F18-39

10823

5K→10K

3.1 - 6.2 mi

Top 95%
×5stories
+79ft-138ft

Overall

25224

Females

10566

F18-39

10566

10K→15K

6.2 - 9.3 mi

Top 96%
×3stories
+67ft-78ft

Overall

25623

Females

10823

F18-39

10823

15K→20K

9.3 - 12.4 mi

Top 97%
×5stories
+106ft-86ft

Overall

25875

Females

10983

F18-39

10983

20K→Half

12.4 - 13.1 mi

Top 96%
×2stories
+19ft-37ft

Overall

25458

Females

10764

F18-39

10764

Half→25K

13.1 - 15.5 mi

Top 97%
×4stories
+66ft-88ft

Overall

25914

Females

11031

F18-39

11031

25K→30K

15.5 - 18.6 mi

Top 96%
×9stories
+181ft-148ft

Overall

25582

Females

10884

F18-39

10884

30K→20M

18.6 - 20.0 mi

Top 95%
×5stories
+64ft-50ft

Overall

25350

Females

10780

F18-39

10780

20M→21M

20.0 - 21.0 mi

Top 93%
×8stories
+106ft-24ft

Overall

24836

Females

10522

F18-39

10522

21M→35K

21.0 - 21.8 mi

Top 94%
×7stories
+17ft-86ft

Overall

24959

Females

10637

F18-39

10637

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

24816

Females

10542

F18-39

10542

23M→24M

23.0 - 24.0 mi

Top 96%
×6stories
+12ft-82ft

Overall

25496

Females

10926

F18-39

10926

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

25196

Females

10773

F18-39

10773

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

24675

Females

10530

F18-39

10530

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2stories
+22ft-21ft

Overall

24989

Females

10661

F18-39

10661

Passing Analysis

Category:
Athletes Passed
449
Passed By
1266
Net Change
-817
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24727
5K → 10K81377-296#24727#25023
10K → 15K31329-298#25023#25321
15K → 20K28266-238#25321#25559
20K → Half1419-5#25559#25564
Half → 25K21121-100#25564#25664
25K → 30K5965-6#25664#25670
30K → 20M3318+15#25670#25655
20M → 21M436+37#25655#25618
21M → 35K217+14#25618#25604
35K → 23M466+40#25604#25564
23M → 24M1229-17#25564#25581
24M → 40K2110+11#25581#25570
40K → 25.2M152+13#25570#25557
25.2M → Finish2411+13#25557#25544
TOTALS4491266-817
📊

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