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BOSTON MARATHON 2023

Breanne Schaefer

Bib: 11551•F

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 25%
Gender (Female)
#0 / 11423
Top 7%
Masters (Masters Women)
#0 / 6539
Top 2%
Division (F40-44)
#0 / 1878
Top 5%
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
7:32/mi
23:25
↑ 97↓ 3451.5%
10K· 6.21 mi
7:19/mi
46:09
↑ 79↓ 1380.4%
15K· 9.32 mi
7:21/mi
1:09:00
↑ 67↓ 78
20K· 12.43 mi
7:24/mi
1:32:00
↑ 106↓ 860.1%
Half· 13.11 mi
7:15/mi
1:36:57
↑ 19↓ 370.5%
25K· 15.53 mi
7:20/mi
1:54:43
↑ 66↓ 880.2%
30K· 18.64 mi
7:20/mi
2:17:30
↑ 181↓ 1480.2%
20M
7:20/mi
2:27:28
↑ 64↓ 500.2%
21M
7:28/mi
2:34:56
↑ 106↓ 241.6%
35K· 21.75 mi
7:04/mi
2:40:13
↑ 17↓ 861.7%
23M
7:05/mi
2:49:05
↑ 23↓ 630.6%
24M
6:48/mi
2:55:53
↓ 821.3%
40K· 24.85 mi
6:53/mi
3:01:46
↓ 200.3%
25.2M
7:15/mi
3:04:16
↑ 13↓ 160.2%
Finish· 26.22 mi
6:30/mi
3:10:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:36:57
Pace7:24 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:33:56
Pace7:10 /mi
📊Negative Split: 3.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:0623:257:3223:25
7:32
-
10K
6.21 mi11:14:5046:097:2622:44
7:19
-0:13
15K
9.32 mi11:37:411:09:007:2422:51
7:21
+0:02
20K
12.43 mi12:00:411:32:007:2423:00
7:24
+0:03
Half
13.11 mi12:05:381:36:577:244:57
7:15
-0:09
25K
15.53 mi12:23:241:54:437:2317:46
7:20
+0:05
30K
18.64 mi12:46:112:17:307:2322:47
7:20
0:00
20M
20.00 mi12:56:092:27:287:229:58
7:20
0:00
21M
21.00 mi13:03:372:34:567:237:28
7:28
+0:08
35K
21.75 mi13:08:542:40:137:225:17
7:04
-0:24
23M
23.00 mi13:17:462:49:057:218:52
7:05
+0:01
24M
24.00 mi13:24:342:55:537:206:48
6:48
-0:17
40K
24.85 mi13:30:273:01:467:195:53
6:53
+0:05
25.2M
25.20 mi13:32:573:04:167:192:30
7:15
+0:22
Finish
26.22 mi13:39:343:10:537:176:37
6:30
-0:45

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

6:30 /mi

Average Pace

7:17 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

33:27

18% of race

Time at Steady Pace

2:37:26

82% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:17 /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 mi10:52:0623:257:3223:25
7:32
#9963
10K
6.21 mi11:14:5046:097:2622:44
7:19
#9393
15K
9.32 mi11:37:411:09:007:2422:51
7:21
#9205
20K
12.43 mi12:00:411:32:007:2423:00
7:24
#9026
Half
13.11 mi12:05:381:36:577:244:57
7:15
#8985
25K
15.53 mi12:23:241:54:437:2317:46
7:20
#8710
30K
18.64 mi12:46:112:17:307:2322:47
7:20
#8193
20M
20.00 mi12:56:092:27:287:229:58
7:20
#7961
21M
21.00 mi13:03:372:34:567:237:28
7:28
#7699
35K
21.75 mi13:08:542:40:137:225:17
7:04
#7605
23M
23.00 mi13:17:462:49:057:218:52
7:05
#7353
24M
24.00 mi13:24:342:55:537:206:48
6:48
#7141
40K
24.85 mi13:30:273:01:467:195:53
6:53
#6949
25.2M
25.20 mi13:32:573:04:167:192:30
7:15
#6839
Finish
26.22 mi13:39:343:10:537:176:37
6:30
#6613
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi9963183818388977(Top 34%)1432(Top 13%)1432(Top 76%)
10K6.21 mi3.10 mi9393+5701566+2721566+2728987(Top 34%)1397(Top 12%)1397(Top 74%)
15K9.32 mi3.11 mi9205+1881501+651501+658977(Top 34%)1432(Top 13%)1432(Top 76%)
20K12.43 mi3.11 mi9026+1791450+511450+518542(Top 32%)1306(Top 11%)1306(Top 70%)
Half13.11 mi0.68 mi8985+411436+141436+148274(Top 31%)1179(Top 10%)1179(Top 63%)
25K15.53 mi2.42 mi8710+2751336+1001336+1007464(Top 28%)991(Top 9%)991(Top 53%)
30K18.64 mi3.11 mi8193+5171189+1471189+1476233(Top 23%)691(Top 6%)691(Top 37%)
20M20.00 mi1.36 mi7961+2321115+741115+745853(Top 22%)668(Top 6%)668(Top 36%)
21M21.00 mi1.00 mi7699+2621043+721043+724453(Top 17%)395(Top 3%)395(Top 21%)
35K21.75 mi0.75 mi7605+941015+281015+285734(Top 22%)680(Top 6%)680(Top 36%)
23M23.00 mi1.25 mi7353+252962+53962+534253(Top 16%)366(Top 3%)366(Top 19%)
24M24.00 mi1.00 mi7141+212900+62900+623690(Top 14%)307(Top 3%)307(Top 16%)
40K24.85 mi0.85 mi6949+192862+38862+383272(Top 12%)280(Top 2%)280(Top 15%)
25.2M25.20 mi0.35 mi6839+110834+28834+282821(Top 11%)240(Top 2%)240(Top 13%)
Finish26.22 mi1.02 mi6613+226783+51783+512487(Top 9%)200(Top 2%)200(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

8977

Females

1432

F40-44

1432

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

8987

Females

1397

F40-44

1397

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

8977

Females

1432

F40-44

1432

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

8542

Females

1306

F40-44

1306

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8274

Females

1179

F40-44

1179

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

7464

Females

991

F40-44

991

25K→30K

15.5 - 18.6 mi

Top 23%
×9story building
+181ft-148ft

Overall

6233

Females

691

F40-44

691

30K→20M

18.6 - 20.0 mi

Top 22%
×5story building
+64ft-50ft

Overall

5853

Females

668

F40-44

668

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4453

Females

395

F40-44

395

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

5734

Females

680

F40-44

680

35K→23M

21.8 - 23.0 mi

Top 16%
×5story building
+23ft-63ft

Overall

4253

Females

366

F40-44

366

23M→24M

23.0 - 24.0 mi

Top 14%
×6story building
+12ft-82ft

Overall

3690

Females

307

F40-44

307

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3272

Females

280

F40-44

280

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2821

Females

240

F40-44

240

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2story building
+22ft-21ft

Overall

2487

Females

200

F40-44

200

Passing Analysis

Category:
Athletes Passed
3587
Passed By
237
Net Change
+3350
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9963
5K → 10K66292+570#9963#9393
10K → 15K25769+188#9393#9205
15K → 20K22445+179#9205#9026
20K → Half487+41#9026#8985
Half → 25K2838+275#8985#8710
25K → 30K5203+517#8710#8193
30K → 20M2375+232#8193#7961
20M → 21M2642+262#7961#7699
21M → 35K962+94#7699#7605
35K → 23M2542+252#7605#7353
23M → 24M2131+212#7353#7141
24M → 40K1931+192#7141#6949
40K → 25.2M1100+110#6949#6839
25.2M → Finish2260+226#6839#6613
TOTALS3587237+3350
📊

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