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BOSTON MARATHON 2023

Stephanie Netzly

Bib: 11304•F

MI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 21%
Gender (Female)
#0 / 11423
Top 4%
Division (F18-39)
#0 / 4884
Top 8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:56/mi
21:31
↑ 97↓ 3451.5%
10K· 6.21 mi
6:50/mi
42:44
↑ 79↓ 1380.4%
15K· 9.32 mi
6:50/mi
1:03:59
↑ 67↓ 78
20K· 12.43 mi
6:52/mi
1:25:19
↑ 106↓ 860.1%
Half· 13.11 mi
6:49/mi
1:29:58
↑ 19↓ 370.5%
25K· 15.53 mi
6:55/mi
1:46:43
↑ 66↓ 880.2%
30K· 18.64 mi
6:56/mi
2:08:14
↑ 181↓ 1480.2%
20M
7:00/mi
2:17:45
↑ 64↓ 500.2%
21M
7:35/mi
2:25:20
↑ 106↓ 241.6%
35K· 21.75 mi
6:45/mi
2:30:23
↑ 17↓ 861.7%
23M
7:29/mi
2:39:45
↑ 23↓ 630.6%
24M
7:42/mi
2:47:27
↓ 821.3%
40K· 24.85 mi
8:07/mi
2:54:23
↓ 200.3%
25.2M
9:23/mi
2:57:37
↑ 13↓ 160.2%
Finish· 26.22 mi
8:11/mi
3:05:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:58
Pace6:52 /mi
2nd Half
Distance13.11 mi
Time1:35:59
Pace7:19 /mi
📊Positive Split: 6.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:3621:316:5621:31
6:56
-
10K
6.21 mi11:09:4942:446:5321:13
6:50
-0:06
15K
9.32 mi11:31:041:03:596:5221:15
6:50
0:00
20K
12.43 mi11:52:241:25:196:5221:20
6:52
+0:02
Half
13.11 mi11:57:031:29:586:524:39
6:49
-0:03
25K
15.53 mi12:13:481:46:436:5216:45
6:55
+0:06
30K
18.64 mi12:35:192:08:146:5321:31
6:56
+0:01
20M
20.00 mi12:44:502:17:456:539:31
7:00
+0:04
21M
21.00 mi12:52:252:25:206:557:35
7:35
+0:35
35K
21.75 mi12:57:282:30:236:555:03
6:45
-0:50
23M
23.00 mi13:06:502:39:456:579:22
7:29
+0:44
24M
24.00 mi13:14:322:47:276:597:42
7:42
+0:13
40K
24.85 mi13:21:282:54:237:016:56
8:07
+0:25
25.2M
25.20 mi13:24:422:57:377:033:14
9:23
+1:16
Finish
26.22 mi13:33:023:05:577:068:20
8:11
-1:12

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

6:45 /mi

Average Pace

7:06 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:22:48

77% of race

Time at Slower Pace

43:09

23% of race

Average Pace: 7:06 /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 mi10:48:3621:316:5621:31
6:56
#5772
10K
6.21 mi11:09:4942:446:5321:13
6:50
#5651
15K
9.32 mi11:31:041:03:596:5221:15
6:50
#5592
20K
12.43 mi11:52:241:25:196:5221:20
6:52
#5450
Half
13.11 mi11:57:031:29:586:524:39
6:49
#5461
25K
15.53 mi12:13:481:46:436:5216:45
6:55
#5370
30K
18.64 mi12:35:192:08:146:5321:31
6:56
#4999
20M
20.00 mi12:44:502:17:456:539:31
7:00
#4882
21M
21.00 mi12:52:252:25:206:557:35
7:35
#4889
35K
21.75 mi12:57:282:30:236:555:03
6:45
#4832
23M
23.00 mi13:06:502:39:456:579:22
7:29
#4894
24M
24.00 mi13:14:322:47:276:597:42
7:42
#5028
40K
24.85 mi13:21:282:54:237:016:56
8:07
#5152
25.2M
25.20 mi13:24:422:57:377:033:14
9:23
#5254
Finish
26.22 mi13:33:023:05:577:068:20
8:11
#5464
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi57724654655491(Top 21%)428(Top 4%)428(Top 9%)
10K6.21 mi3.10 mi5651+121444+21444+215582(Top 21%)448(Top 4%)448(Top 9%)
15K9.32 mi3.11 mi5592+59436+8436+85491(Top 21%)428(Top 4%)428(Top 9%)
20K12.43 mi3.11 mi5450+142414+22414+225089(Top 19%)376(Top 3%)376(Top 8%)
Half13.11 mi0.68 mi5461-11411+3411+35476(Top 21%)424(Top 4%)424(Top 9%)
25K15.53 mi2.42 mi5370+91400+11400+115033(Top 19%)377(Top 3%)377(Top 8%)
30K18.64 mi3.11 mi4999+371356+44356+443855(Top 14%)242(Top 2%)242(Top 5%)
20M20.00 mi1.36 mi4882+117343+13343+134086(Top 15%)307(Top 3%)307(Top 6%)
21M21.00 mi1.00 mi4889-7345-2345-25025(Top 19%)528(Top 5%)528(Top 11%)
35K21.75 mi0.75 mi4832+57341+4341+43935(Top 15%)317(Top 3%)317(Top 6%)
23M23.00 mi1.25 mi4894-62359-18359-186331(Top 24%)927(Top 8%)927(Top 19%)
24M24.00 mi1.00 mi5028-134399-40399-409091(Top 34%)2135(Top 19%)2135(Top 44%)
40K24.85 mi0.85 mi5152-124420-21420-2110764(Top 40%)3012(Top 26%)3012(Top 62%)
25.2M25.20 mi0.35 mi5254-102441-21441-2114561(Top 55%)5027(Top 44%)5027(Top 103%)
Finish26.22 mi1.02 mi5464-210485-44485-4413282(Top 50%)4341(Top 38%)4341(Top 89%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21story building
+97ft-345ft

Overall

5491

Females

428

F18-39

428

5K→10K

3.1 - 6.2 mi

Top 21%
×5story building
+79ft-138ft

Overall

5582

Females

448

F18-39

448

10K→15K

6.2 - 9.3 mi

Top 21%
×3story building
+67ft-78ft

Overall

5491

Females

428

F18-39

428

15K→20K

9.3 - 12.4 mi

Top 19%
×5story building
+106ft-86ft

Overall

5089

Females

376

F18-39

376

20K→Half

12.4 - 13.1 mi

Top 21%
×2story building
+19ft-37ft

Overall

5476

Females

424

F18-39

424

Half→25K

13.1 - 15.5 mi

Top 19%
×4story building
+66ft-88ft

Overall

5033

Females

377

F18-39

377

25K→30K

15.5 - 18.6 mi

Top 14%
×9story building
+181ft-148ft

Overall

3855

Females

242

F18-39

242

30K→20M

18.6 - 20.0 mi

Top 15%
×5story building
+64ft-50ft

Overall

4086

Females

307

F18-39

307

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

5025

Females

528

F18-39

528

21M→35K

21.0 - 21.8 mi

Top 15%
×7story building
+17ft-86ft

Overall

3935

Females

317

F18-39

317

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6331

Females

927

F18-39

927

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9091

Females

2135

F18-39

2135

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

10764

Females

3012

F18-39

3012

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14561

Females

5027

F18-39

5027

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

13282

Females

4341

F18-39

4341

Passing Analysis

Category:
Athletes Passed
1481
Passed By
1173
Net Change
+308
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5772
5K → 10K262141+121#5772#5651
10K → 15K14889+59#5651#5592
15K → 20K17230+142#5592#5450
20K → Half1627-11#5450#5461
Half → 25K13039+91#5461#5370
25K → 30K38413+371#5370#4999
30K → 20M13316+117#4999#4882
20M → 21M5865-7#4882#4889
21M → 35K6912+57#4889#4832
35K → 23M59121-62#4832#4894
23M → 24M18152-134#4894#5028
24M → 40K15139-124#5028#5152
40K → 25.2M4106-102#5152#5254
25.2M → Finish13223-210#5254#5464
TOTALS14811173+308
📊

Passing Visuals

Category:
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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