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BOSTON MARATHON 2023

Libbie Schroth

Bib: 21556•F

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 47%
Masters (Masters Women)
#0 / 6539
Top 36%
Division (F45-49)
#0 / 1817
Top 43%
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
8:24/mi
26:05
↑ 97↓ 3451.5%
10K· 6.21 mi
8:14/mi
51:41
↑ 79↓ 1380.4%
15K· 9.32 mi
8:13/mi
1:17:14
↑ 67↓ 78
20K· 12.43 mi
8:18/mi
1:43:00
↑ 106↓ 860.1%
Half· 13.11 mi
8:10/mi
1:48:34
↑ 19↓ 370.5%
25K· 15.53 mi
8:19/mi
2:08:45
↑ 66↓ 880.2%
30K· 18.64 mi
8:37/mi
2:35:32
↑ 181↓ 1480.2%
20M
8:50/mi
2:47:32
↑ 64↓ 500.2%
21M
9:16/mi
2:56:48
↑ 106↓ 241.6%
35K· 21.75 mi
8:45/mi
3:03:21
↑ 17↓ 861.7%
23M
9:09/mi
3:14:48
↑ 23↓ 630.6%
24M
9:10/mi
3:23:58
↓ 821.3%
40K· 24.85 mi
9:04/mi
3:31:43
↓ 200.3%
25.2M
9:31/mi
3:35:00
↑ 13↓ 160.2%
Finish· 26.22 mi
8:33/mi
3:43:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:34
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time1:55:09
Pace8:47 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3126:058:2426:05
8:24
-
10K
6.21 mi11:45:0751:418:1925:36
8:14
-0:10
15K
9.32 mi12:10:401:17:148:1725:33
8:13
-0:01
20K
12.43 mi12:36:261:43:008:1725:46
8:18
+0:05
Half
13.11 mi12:42:001:48:348:175:34
8:10
-0:08
25K
15.53 mi13:02:112:08:458:1720:11
8:19
+0:09
30K
18.64 mi13:28:582:35:328:2126:47
8:37
+0:18
20M
20.00 mi13:40:582:47:328:2312:00
8:50
+0:13
21M
21.00 mi13:50:142:56:488:259:16
9:16
+0:26
35K
21.75 mi13:56:473:03:218:266:33
8:45
-0:31
23M
23.00 mi14:08:143:14:488:2811:27
9:09
+0:24
24M
24.00 mi14:17:243:23:588:309:10
9:10
+0:01
40K
24.85 mi14:25:093:31:438:317:45
9:04
-0:06
25.2M
25.20 mi14:28:263:35:008:323:17
9:31
+0:27
Finish
26.22 mi14:37:093:43:438:328:43
8:33
-0:58

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

8:10 /mi

Average Pace

8:32 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:02:48

82% of race

Time at Steady Pace

40:55

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:32 /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 mi11:19:3126:058:2426:05
8:24
#16856
10K
6.21 mi11:45:0751:418:1925:36
8:14
#16647
15K
9.32 mi12:10:401:17:148:1725:33
8:13
#16428
20K
12.43 mi12:36:261:43:008:1725:46
8:18
#16170
Half
13.11 mi12:42:001:48:348:175:34
8:10
#16144
25K
15.53 mi13:02:112:08:458:1720:11
8:19
#15961
30K
18.64 mi13:28:582:35:328:2126:47
8:37
#15775
20M
20.00 mi13:40:582:47:328:2312:00
8:50
#15721
21M
21.00 mi13:50:142:56:488:259:16
9:16
#15658
35K
21.75 mi13:56:473:03:218:266:33
8:45
#15684
23M
23.00 mi14:08:143:14:488:2811:27
9:09
#15734
24M
24.00 mi14:17:243:23:588:309:10
9:10
#15875
40K
24.85 mi14:25:093:31:438:317:45
9:04
#15882
25.2M
25.20 mi14:28:263:35:008:323:17
9:31
#15861
Finish
26.22 mi14:37:093:43:438:328:43
8:33
#15856
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi168565829582916035(Top 60%)5316(Top 47%)5316(Top 293%)
10K6.21 mi3.10 mi16647+2095672+1575672+15716533(Top 62%)5598(Top 49%)5598(Top 308%)
15K9.32 mi3.11 mi16428+2195543+1295543+12916035(Top 60%)5316(Top 47%)5316(Top 293%)
20K12.43 mi3.11 mi16170+2585405+1385405+13815579(Top 59%)5082(Top 44%)5082(Top 280%)
Half13.11 mi0.68 mi16144+265401+45401+415567(Top 58%)5039(Top 44%)5039(Top 277%)
25K15.53 mi2.42 mi15961+1835311+905311+9015120(Top 57%)4925(Top 43%)4925(Top 271%)
30K18.64 mi3.11 mi15775+1865238+735238+7315050(Top 57%)4961(Top 43%)4961(Top 273%)
20M20.00 mi1.36 mi15721+545222+165222+1615623(Top 59%)5345(Top 47%)5345(Top 294%)
21M21.00 mi1.00 mi15658+635218+45218+414838(Top 56%)4957(Top 43%)4957(Top 273%)
35K21.75 mi0.75 mi15684-265247-295247-2916726(Top 63%)6114(Top 54%)6114(Top 336%)
23M23.00 mi1.25 mi15734-505305-585305-5816779(Top 63%)6171(Top 54%)6171(Top 340%)
24M24.00 mi1.00 mi15875-1415403-985403-9817940(Top 67%)6864(Top 60%)6864(Top 378%)
40K24.85 mi0.85 mi15882-75414-115414-1116496(Top 62%)6126(Top 54%)6126(Top 337%)
25.2M25.20 mi0.35 mi15861+215403+115403+1115334(Top 58%)5495(Top 48%)5495(Top 302%)
Finish26.22 mi1.02 mi15856+55407-45407-415754(Top 59%)5674(Top 50%)5674(Top 312%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16035

Females

5316

F45-49

5316

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

16533

Females

5598

F45-49

5598

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16035

Females

5316

F45-49

5316

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

15579

Females

5082

F45-49

5082

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

15567

Females

5039

F45-49

5039

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

15120

Females

4925

F45-49

4925

25K→30K

15.5 - 18.6 mi

Top 57%
×9story building
+181ft-148ft

Overall

15050

Females

4961

F45-49

4961

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

15623

Females

5345

F45-49

5345

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

14838

Females

4957

F45-49

4957

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16726

Females

6114

F45-49

6114

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

16779

Females

6171

F45-49

6171

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

17940

Females

6864

F45-49

6864

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16496

Females

6126

F45-49

6126

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15334

Females

5495

F45-49

5495

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15754

Females

5674

F45-49

5674

Passing Analysis

Category:
Athletes Passed
2145
Passed By
1145
Net Change
+1000
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16856
5K → 10K418209+209#16856#16647
10K → 15K327108+219#16647#16428
15K → 20K31355+258#16428#16170
20K → Half5731+26#16170#16144
Half → 25K22643+183#16144#15961
25K → 30K27690+186#15961#15775
30K → 20M11359+54#15775#15721
20M → 21M11653+63#15721#15658
21M → 35K3965-26#15658#15684
35K → 23M62112-50#15684#15734
23M → 24M37178-141#15734#15875
24M → 40K6067-7#15875#15882
40K → 25.2M3817+21#15882#15861
25.2M → Finish6358+5#15861#15856
TOTALS21451145+1000
📊

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