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BOSTON MARATHON 2023

Natalie Walz

Bib: 14968•F

MN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 47%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:02
Rank: #11803
Start → 5K
24:02 | 7:44/mi
10K· 6.21 mi
48:11
Rank: #12329 (-526)
5K → 10K
24:09 | 7:46/mi
15K· 9.32 mi
1:13:10
Rank: #13143 (-814)
10K → 15K
24:59 | 8:02/mi
20K· 12.43 mi
1:39:05
Rank: #13892 (-749)
15K → 20K
25:55 | 8:21/mi
Half· 13.11 mi
1:44:43
Rank: #14016 (-124)
20K → Half
5:38 | 8:15/mi
25K· 15.53 mi
2:05:48
Rank: #14642 (-626)
Half → 25K
21:05 | 8:42/mi
30K· 18.64 mi
2:33:56
Rank: #15182 (-540)
25K → 30K
28:08 | 9:03/mi
20M
2:47:38
Rank: #15761 (-579)
30K → 20M
13:42 | 10:05/mi
21M
2:57:43
Rank: #15952 (-191)
20M → 21M
10:05 | 10:05/mi
35K· 21.75 mi
3:05:16
Rank: #16274 (-322)
21M → 35K
7:33 | 10:05/mi
23M
3:18:30
Rank: #16774 (-500)
35K → 23M
13:14 | 10:34/mi
24M
3:27:58
Rank: #16907 (-133)
23M → 24M
9:28 | 9:28/mi
40K· 24.85 mi
3:36:26
Rank: #17047 (-140)
24M → 40K
8:28 | 9:54/mi
25.2M
3:40:33
Rank: #17220 (-173)
40K → 25.2M
4:07 | 11:56/mi
Finish· 26.22 mi
3:50:16
Rank: #17396 (-176)
25.2M → Finish
9:43 | 9:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:43
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time2:05:33
Pace9:35 /mi
📊Positive Split: 19.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4724:027:4424:02
7:44
-
10K
6.21 mi11:16:5648:117:4524:09
7:46
+0:02
15K
9.32 mi11:41:551:13:107:5124:59
8:02
+0:16
20K
12.43 mi12:07:501:39:057:5825:55
8:21
+0:19
Half
13.11 mi12:13:281:44:437:595:38
8:15
-0:06
25K
15.53 mi12:34:332:05:488:0621:05
8:42
+0:27
30K
18.64 mi13:02:412:33:568:1528:08
9:03
+0:21
20M
20.00 mi13:16:232:47:388:2313:42
10:05
+1:02
21M
21.00 mi13:26:282:57:438:2810:05
10:05
0:00
35K
21.75 mi13:34:013:05:168:317:33
10:05
0:00
23M
23.00 mi13:47:153:18:308:3813:14
10:34
+0:29
24M
24.00 mi13:56:433:27:588:409:28
9:28
-1:06
40K
24.85 mi14:05:113:36:268:428:28
9:54
+0:26
25.2M
25.20 mi14:09:183:40:338:454:07
11:56
+2:02
Finish
26.22 mi14:19:013:50:168:479:43
9:32
-2:24

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

7:44 /mi

Average Pace

8:47 /mi

Slowest Pace

11:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:48

55% of race

Time at Steady Pace

55:47

24% of race

Time at Slower Pace

48:41

21% of race

Average Pace: 8:47 /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 mi10:52:4724:027:4424:02
7:44
#11803
10K
6.21 mi11:16:5648:117:4524:09
7:46
#12329
15K
9.32 mi11:41:551:13:107:5124:59
8:02
#13143
20K
12.43 mi12:07:501:39:057:5825:55
8:21
#13892
Half
13.11 mi12:13:281:44:437:595:38
8:15
#14016
25K
15.53 mi12:34:332:05:488:0621:05
8:42
#14642
30K
18.64 mi13:02:412:33:568:1528:08
9:03
#15182
20M
20.00 mi13:16:232:47:388:2313:42
10:05
#15761
21M
21.00 mi13:26:282:57:438:2810:05
10:05
#15952
35K
21.75 mi13:34:013:05:168:317:33
10:05
#16274
23M
23.00 mi13:47:153:18:308:3813:14
10:34
#16774
24M
24.00 mi13:56:433:27:588:409:28
9:28
#16907
40K
24.85 mi14:05:113:36:268:428:28
9:54
#17047
25.2M
25.20 mi14:09:183:40:338:454:07
11:56
#17220
Finish
26.22 mi14:19:013:50:168:479:43
9:32
#17396
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi118032759275914751(Top 55%)4540(Top 40%)4540(Top 242%)
10K6.21 mi3.10 mi12329-5263059-3003059-30012913(Top 49%)3386(Top 30%)3386(Top 180%)
15K9.32 mi3.11 mi13143-8143548-4893548-48914751(Top 55%)4540(Top 40%)4540(Top 242%)
20K12.43 mi3.11 mi13892-7494020-4724020-47215908(Top 60%)5297(Top 46%)5297(Top 282%)
Half13.11 mi0.68 mi14016-1244097-774097-7716281(Top 61%)5482(Top 48%)5482(Top 292%)
25K15.53 mi2.42 mi14642-6264493-3964493-39617367(Top 65%)6210(Top 54%)6210(Top 331%)
30K18.64 mi3.11 mi15182-5404875-3824875-38217472(Top 66%)6337(Top 55%)6337(Top 337%)
20M20.00 mi1.36 mi15761-5795247-3725247-37220715(Top 78%)8263(Top 72%)8263(Top 440%)
21M21.00 mi1.00 mi15952-1915388-1415388-14118298(Top 69%)6935(Top 61%)6935(Top 369%)
35K21.75 mi0.75 mi16274-3225590-2025590-20221517(Top 81%)8783(Top 77%)8783(Top 468%)
23M23.00 mi1.25 mi16774-5005887-2975887-29721471(Top 81%)8772(Top 77%)8772(Top 467%)
24M24.00 mi1.00 mi16907-1335985-985985-9819105(Top 72%)7502(Top 66%)7502(Top 399%)
40K24.85 mi0.85 mi17047-1406087-1026087-10219702(Top 74%)7888(Top 69%)7888(Top 420%)
25.2M25.20 mi0.35 mi17220-1736192-1056192-10522375(Top 84%)9323(Top 82%)9323(Top 496%)
Finish26.22 mi1.02 mi17396-1766303-1116303-11120256(Top 76%)8149(Top 71%)8149(Top 434%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21stories
+97ft-345ft

Overall

14751

Females

4540

F40-44

4540

5K→10K

3.1 - 6.2 mi

Top 49%
×5stories
+79ft-138ft

Overall

12913

Females

3386

F40-44

3386

10K→15K

6.2 - 9.3 mi

Top 55%
×3stories
+67ft-78ft

Overall

14751

Females

4540

F40-44

4540

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

15908

Females

5297

F40-44

5297

20K→Half

12.4 - 13.1 mi

Top 61%
×2stories
+19ft-37ft

Overall

16281

Females

5482

F40-44

5482

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

17367

Females

6210

F40-44

6210

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

17472

Females

6337

F40-44

6337

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

20715

Females

8263

F40-44

8263

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

18298

Females

6935

F40-44

6935

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

21517

Females

8783

F40-44

8783

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

21471

Females

8772

F40-44

8772

23M→24M

23.0 - 24.0 mi

Top 72%
×6stories
+12ft-82ft

Overall

19105

Females

7502

F40-44

7502

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19702

Females

7888

F40-44

7888

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

22375

Females

9323

F40-44

9323

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2stories
+22ft-21ft

Overall

20256

Females

8149

F40-44

8149

Passing Analysis

Category:
Athletes Passed
444
Passed By
6037
Net Change
-5593
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11803
5K → 10K121647-526#11803#12329
10K → 15K32846-814#12329#13143
15K → 20K49798-749#13143#13892
20K → Half7131-124#13892#14016
Half → 25K37663-626#14016#14642
25K → 30K54594-540#14642#15182
30K → 20M11590-579#15182#15761
20M → 21M38229-191#15761#15952
21M → 35K11333-322#15952#16274
35K → 23M11511-500#16274#16774
23M → 24M24157-133#16774#16907
24M → 40K26166-140#16907#17047
40K → 25.2M3176-173#17047#17220
25.2M → Finish20196-176#17220#17396
TOTALS4446037-5593
📊

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