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BOSTON MARATHON 2023

Stephanie Schaefer

Bib: 17532•F

AZ

Masters
Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 26622
Top 46%
Gender (Female)
#0 / 11423
Top 29%
Masters (Masters Women)
#0 / 6539
Top 16%
Age Group (F40-44)
#0 / 1878
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
25:53
Rank: #16357
Start → 5K
25:53 | 8:20/mi
10K· 6.21 mi
50:52
Rank: #15722 (+635)
5K → 10K
24:59 | 8:02/mi
15K· 9.32 mi
1:15:39
Rank: #15230 (+492)
10K → 15K
24:47 | 7:59/mi
20K· 12.43 mi
1:40:38
Rank: #14846 (+384)
15K → 20K
24:59 | 8:02/mi
Half· 13.11 mi
1:46:06
Rank: #14829 (+17)
20K → Half
5:28 | 8:01/mi
25K· 15.53 mi
2:05:33
Rank: #14512 (+317)
Half → 25K
19:27 | 8:01/mi
30K· 18.64 mi
2:30:28
Rank: #13863 (+649)
25K → 30K
24:55 | 8:01/mi
20M
2:41:28
Rank: #13620 (+243)
30K → 20M
11:00 | 8:06/mi
21M
2:49:50
Rank: #13349 (+271)
20M → 21M
8:22 | 8:22/mi
35K· 21.75 mi
2:55:41
Rank: #13236 (+113)
21M → 35K
5:51 | 7:49/mi
23M
3:05:43
Rank: #13002 (+234)
35K → 23M
10:02 | 8:01/mi
24M
3:13:26
Rank: #12841 (+161)
23M → 24M
7:43 | 7:43/mi
40K· 24.85 mi
3:20:13
Rank: #12702 (+139)
24M → 40K
6:47 | 7:56/mi
25.2M
3:23:01
Rank: #12625 (+77)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:30:22
Rank: #12370 (+255)
25.2M → Finish
7:21 | 7:13/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half
via Half
Distance13.11 mi
Time1:46:06
Pace8:06 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:44:16
Pace7:57 /mi
📊Negative Split: 1.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3425:538:2025:53
8:20
-
10K
6.21 mi11:46:3350:528:1124:59
8:02
-0:18
15K
9.32 mi12:11:201:15:398:0724:47
7:59
-0:03
20K
12.43 mi12:36:191:40:388:0624:59
8:02
+0:03
Half
13.11 mi12:41:471:46:068:065:28
8:01
-0:01
25K
15.53 mi13:01:142:05:338:0519:27
8:01
0:00
30K
18.64 mi13:26:092:30:288:0424:55
8:01
0:00
20M
20.00 mi13:37:092:41:288:0411:00
8:06
+0:05
21M
21.00 mi13:45:312:49:508:058:22
8:22
+0:16
35K
21.75 mi13:51:222:55:418:055:51
7:49
-0:33
23M
23.00 mi14:01:243:05:438:0410:02
8:01
+0:12
24M
24.00 mi14:09:073:13:268:047:43
7:43
-0:18
40K
24.85 mi14:15:543:20:138:036:47
7:56
+0:13
25.2M
25.20 mi14:18:423:23:018:032:48
8:07
+0:11
Finish
26.22 mi14:26:033:30:228:027:21
7:13
-0:54

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

7:13 /mi

Average Pace

8:02 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

27:42

13% of race

Time at Steady Pace

3:02:40

87% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:01 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:21:3425:538:2025:53
8:20
#16357
10K
6.21 mi11:46:3350:528:1124:59
8:02
#15722
15K
9.32 mi12:11:201:15:398:0724:47
7:59
#15230
20K
12.43 mi12:36:191:40:388:0624:59
8:02
#14846
Half
13.11 mi12:41:471:46:068:065:28
8:01
#14829
25K
15.53 mi13:01:142:05:338:0519:27
8:01
#14512
30K
18.64 mi13:26:092:30:288:0424:55
8:01
#13863
20M
20.00 mi13:37:092:41:288:0411:00
8:06
#13620
21M
21.00 mi13:45:312:49:508:058:22
8:22
#13349
35K
21.75 mi13:51:222:55:418:055:51
7:49
#13236
23M
23.00 mi14:01:243:05:438:0410:02
8:01
#13002
24M
24.00 mi14:09:073:13:268:047:43
7:43
#12841
40K
24.85 mi14:15:543:20:138:036:47
7:56
#12702
25.2M
25.20 mi14:18:423:23:018:032:48
8:07
#12625
Finish
26.22 mi14:26:033:30:228:027:21
7:13
#12370
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi163575500550014200(Top 53%)4199(Top 37%)4199(Top 224%)
10K6.21 mi3.10 mi15722+6355106+3945106+39415107(Top 57%)4727(Top 41%)4727(Top 252%)
15K9.32 mi3.11 mi15230+4924804+3024804+30214200(Top 53%)4199(Top 37%)4199(Top 224%)
20K12.43 mi3.11 mi14846+3844582+2224582+22213767(Top 52%)3971(Top 35%)3971(Top 211%)
Half13.11 mi0.68 mi14829+174577+54577+514479(Top 54%)4348(Top 38%)4348(Top 232%)
25K15.53 mi2.42 mi14512+3174406+1714406+17112930(Top 49%)3587(Top 31%)3587(Top 191%)
30K18.64 mi3.11 mi13863+6494053+3534053+35311086(Top 42%)2690(Top 24%)2690(Top 143%)
20M20.00 mi1.36 mi13620+2433930+1233930+12311017(Top 41%)2750(Top 24%)2750(Top 146%)
21M21.00 mi1.00 mi13349+2713781+1493781+1499688(Top 36%)2244(Top 20%)2244(Top 119%)
35K21.75 mi0.75 mi13236+1133732+493732+4910861(Top 41%)2813(Top 25%)2813(Top 150%)
23M23.00 mi1.25 mi13002+2343630+1023630+1029874(Top 37%)2458(Top 22%)2458(Top 131%)
24M24.00 mi1.00 mi12841+1613555+753555+759242(Top 35%)2230(Top 20%)2230(Top 119%)
40K24.85 mi0.85 mi12702+1393491+643491+649644(Top 36%)2489(Top 22%)2489(Top 133%)
25.2M25.20 mi0.35 mi12625+773458+333458+337335(Top 28%)1579(Top 14%)1579(Top 84%)
Finish26.22 mi1.02 mi12370+2553330+1283330+1286569(Top 25%)1280(Top 11%)1280(Top 68%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21stories
+97ft-345ft

Overall

14200

Females

4199

F40-44

4199

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

15107

Females

4727

F40-44

4727

10K→15K

6.2 - 9.3 mi

Top 53%
×3stories
+67ft-78ft

Overall

14200

Females

4199

F40-44

4199

15K→20K

9.3 - 12.4 mi

Top 52%
×5stories
+106ft-86ft

Overall

13767

Females

3971

F40-44

3971

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

14479

Females

4348

F40-44

4348

Half→25K

13.1 - 15.5 mi

Top 49%
×4stories
+66ft-88ft

Overall

12930

Females

3587

F40-44

3587

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

11086

Females

2690

F40-44

2690

30K→20M

18.6 - 20.0 mi

Top 41%
×5stories
+64ft-50ft

Overall

11017

Females

2750

F40-44

2750

20M→21M

20.0 - 21.0 mi

Top 36%
×8stories
+106ft-24ft

Overall

9688

Females

2244

F40-44

2244

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

10861

Females

2813

F40-44

2813

35K→23M

21.8 - 23.0 mi

Top 37%
×5stories
+23ft-63ft

Overall

9874

Females

2458

F40-44

2458

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9242

Females

2230

F40-44

2230

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9644

Females

2489

F40-44

2489

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7335

Females

1579

F40-44

1579

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

6569

Females

1280

F40-44

1280

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
4248
Passed By
261
Net Change
+3987
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16357
5K → 10K736101+635#16357#15722
10K → 15K52331+492#15722#15230
15K → 20K42137+384#15230#14846
20K → Half4023+17#14846#14829
Half → 25K33316+317#14829#14512
25K → 30K6545+649#14512#13863
30K → 20M25310+243#13863#13620
20M → 21M2743+271#13620#13349
21M → 35K1218+113#13349#13236
35K → 23M2417+234#13236#13002
23M → 24M17110+161#13002#12841
24M → 40K1456+139#12841#12702
40K → 25.2M814+77#12702#12625
25.2M → Finish2550+255#12625#12370
TOTALS4248261+3987
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing