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BOSTON MARATHON 2023

Natalie Kretzer

Bib: 6824•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 15%
Gender (Female)
#0 / 11423
Top 2%
Division (F18-39)
#0 / 4884
Top 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:49
Rank: #6394
Start → 5K
21:49 | 7:01/mi
10K· 6.21 mi
43:24
Rank: #6425 (-31)
5K → 10K
21:35 | 6:57/mi
15K· 9.32 mi
1:04:56
Rank: #6302 (+123)
10K → 15K
21:32 | 6:56/mi
20K· 12.43 mi
1:26:26
Rank: #6075 (+227)
15K → 20K
21:30 | 6:55/mi
Half· 13.11 mi
1:31:03
Rank: #6033 (+42)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:47:39
Rank: #5770 (+263)
Half → 25K
16:36 | 6:51/mi
30K· 18.64 mi
2:08:32
Rank: #5134 (+636)
25K → 30K
20:53 | 6:43/mi
20M
2:17:36
Rank: #4822 (+312)
30K → 20M
9:04 | 6:40/mi
21M
2:24:33
Rank: #4613 (+209)
20M → 21M
6:57 | 6:57/mi
35K· 21.75 mi
2:29:20
Rank: #4462 (+151)
21M → 35K
4:47 | 6:24/mi
23M
2:37:42
Rank: #4237 (+225)
35K → 23M
8:22 | 6:41/mi
24M
2:44:09
Rank: #4085 (+152)
23M → 24M
6:27 | 6:27/mi
40K· 24.85 mi
2:49:52
Rank: #3981 (+104)
24M → 40K
5:43 | 6:41/mi
25.2M
2:52:21
Rank: #3937 (+44)
40K → 25.2M
2:29 | 7:12/mi
Finish· 26.22 mi
2:59:08
Rank: #3899 (+38)
25.2M → Finish
6:47 | 6:39/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:31:03
Pace6:57 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:28:05
Pace6:43 /mi
📊Negative Split: 3.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:2921:497:0121:49
7:01
-
10K
6.21 mi10:47:0443:246:5921:35
6:57
-0:04
15K
9.32 mi11:08:361:04:566:5821:32
6:56
-0:01
20K
12.43 mi11:30:061:26:266:5721:30
6:55
-0:01
Half
13.11 mi11:34:431:31:036:574:37
6:46
-0:09
25K
15.53 mi11:51:191:47:396:5616:36
6:51
+0:05
30K
18.64 mi12:12:122:08:326:5420:53
6:43
-0:08
20M
20.00 mi12:21:162:17:366:539:04
6:40
-0:03
21M
21.00 mi12:28:132:24:336:536:57
6:57
+0:17
35K
21.75 mi12:33:002:29:206:524:47
6:24
-0:33
23M
23.00 mi12:41:222:37:426:518:22
6:41
+0:17
24M
24.00 mi12:47:492:44:096:506:27
6:27
-0:14
40K
24.85 mi12:53:322:49:526:505:43
6:41
+0:14
25.2M
25.20 mi12:56:012:52:216:502:29
7:12
+0:31
Finish
26.22 mi13:02:482:59:086:506:47
6:39
-0:33

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

6:24 /mi

Average Pace

6:50 /mi

Slowest Pace

7:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:39

99% of race

Time at Steady Pace

2:29

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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 mi10:25:2921:497:0121:49
7:01
#6394
10K
6.21 mi10:47:0443:246:5921:35
6:57
#6425
15K
9.32 mi11:08:361:04:566:5821:32
6:56
#6302
20K
12.43 mi11:30:061:26:266:5721:30
6:55
#6075
Half
13.11 mi11:34:431:31:036:574:37
6:46
#6033
25K
15.53 mi11:51:191:47:396:5616:36
6:51
#5770
30K
18.64 mi12:12:122:08:326:5420:53
6:43
#5134
20M
20.00 mi12:21:162:17:366:539:04
6:40
#4822
21M
21.00 mi12:28:132:24:336:536:57
6:57
#4613
35K
21.75 mi12:33:002:29:206:524:47
6:24
#4462
23M
23.00 mi12:41:222:37:426:518:22
6:41
#4237
24M
24.00 mi12:47:492:44:096:506:27
6:27
#4085
40K
24.85 mi12:53:322:49:526:505:43
6:41
#3981
25.2M
25.20 mi12:56:012:52:216:502:29
7:12
#3937
Finish
26.22 mi13:02:482:59:086:506:47
6:39
#3899
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi63945755756161(Top 23%)567(Top 5%)567(Top 12%)
10K6.21 mi3.10 mi6425-31607-32607-326469(Top 24%)630(Top 6%)630(Top 13%)
15K9.32 mi3.11 mi6302+123583+24583+246161(Top 23%)567(Top 5%)567(Top 12%)
20K12.43 mi3.11 mi6075+227535+48535+485489(Top 21%)424(Top 4%)424(Top 9%)
Half13.11 mi0.68 mi6033+42525+10525+105063(Top 19%)363(Top 3%)363(Top 7%)
25K15.53 mi2.42 mi5770+263464+61464+614578(Top 17%)313(Top 3%)313(Top 6%)
30K18.64 mi3.11 mi5134+636374+90374+902531(Top 10%)123(Top 1%)123(Top 3%)
20M20.00 mi1.36 mi4822+312334+40334+402179(Top 8%)106(Top 0.9%)106(Top 2%)
21M21.00 mi1.00 mi4613+209311+23311+231952(Top 7%)102(Top 0.9%)102(Top 2%)
35K21.75 mi0.75 mi4462+151298+13298+131987(Top 7%)101(Top 0.9%)101(Top 2%)
23M23.00 mi1.25 mi4237+225268+30268+302133(Top 8%)119(Top 1%)119(Top 2%)
24M24.00 mi1.00 mi4085+152257+11257+111916(Top 7%)116(Top 1%)116(Top 2%)
40K24.85 mi0.85 mi3981+104251+6251+62324(Top 9%)166(Top 1%)166(Top 3%)
25.2M25.20 mi0.35 mi3937+44247+4247+42604(Top 10%)196(Top 2%)196(Top 4%)
Finish26.22 mi1.02 mi3899+38240+7240+73305(Top 12%)328(Top 3%)328(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6161

Females

567

F18-39

567

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6469

Females

630

F18-39

630

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6161

Females

567

F18-39

567

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5489

Females

424

F18-39

424

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5063

Females

363

F18-39

363

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4578

Females

313

F18-39

313

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2531

Females

123

F18-39

123

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2179

Females

106

F18-39

106

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1952

Females

102

F18-39

102

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1987

Females

101

F18-39

101

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2133

Females

119

F18-39

119

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1916

Females

116

F18-39

116

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2324

Females

166

F18-39

166

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2604

Females

196

F18-39

196

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3305

Females

328

F18-39

328

Passing Analysis

Category:
Athletes Passed
2830
Passed By
335
Net Change
+2495
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6394
5K → 10K173204-31#6394#6425
10K → 15K17855+123#6425#6302
15K → 20K24619+227#6302#6075
20K → Half420+42#6075#6033
Half → 25K2685+263#6033#5770
25K → 30K6360+636#5770#5134
30K → 20M3131+312#5134#4822
20M → 21M2090+209#4822#4613
21M → 35K1521+151#4613#4462
35K → 23M2272+225#4462#4237
23M → 24M1542+152#4237#4085
24M → 40K1139+104#4085#3981
40K → 25.2M506+44#3981#3937
25.2M → Finish6931+38#3937#3899
TOTALS2830335+2495
📊

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