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BOSTON MARATHON 2023

Lian Baker

Bib: 12615•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 44%
Gender (Female)
#0 / 11423
Top 26%
Masters (Masters Women)
#0 / 6539
Top 13%
Division (F45-49)
#0 / 1817
Top 14%
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
7:49/mi
24:16
↑ 97↓ 3451.5%
10K· 6.21 mi
7:57/mi
48:58
↑ 79↓ 1380.4%
15K· 9.32 mi
8:08/mi
1:14:15
↑ 67↓ 78
20K· 12.43 mi
7:58/mi
1:39:00
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:44:20
↑ 19↓ 370.5%
25K· 15.53 mi
7:50/mi
2:03:19
↑ 66↓ 880.2%
30K· 18.64 mi
8:06/mi
2:28:28
↑ 181↓ 1480.2%
20M
8:04/mi
2:39:26
↑ 64↓ 500.2%
21M
8:31/mi
2:47:57
↑ 106↓ 241.6%
35K· 21.75 mi
7:33/mi
2:53:36
↑ 17↓ 861.7%
23M
7:58/mi
3:03:34
↑ 23↓ 630.6%
24M
7:43/mi
3:11:17
↓ 821.3%
40K· 24.85 mi
7:51/mi
3:18:00
↓ 200.3%
25.2M
8:19/mi
3:20:52
↑ 13↓ 160.2%
Finish· 26.22 mi
7:35/mi
3:28:36
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:44:20
Pace7:58 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:44:16
Pace7:57 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:1424:167:4924:16
7:49
-
10K
6.21 mi11:20:5648:587:5324:42
7:57
+0:08
15K
9.32 mi11:46:131:14:157:5825:17
8:08
+0:11
20K
12.43 mi12:10:581:39:007:5824:45
7:58
-0:10
Half
13.11 mi12:16:181:44:207:585:20
7:49
-0:09
25K
15.53 mi12:35:172:03:197:5618:59
7:50
+0:01
30K
18.64 mi13:00:262:28:287:5825:09
8:06
+0:16
20M
20.00 mi13:11:242:39:267:5810:58
8:04
-0:02
21M
21.00 mi13:19:552:47:578:008:31
8:31
+0:27
35K
21.75 mi13:25:342:53:367:595:39
7:33
-0:58
23M
23.00 mi13:35:323:03:347:599:58
7:58
+0:25
24M
24.00 mi13:43:153:11:177:587:43
7:43
-0:15
40K
24.85 mi13:49:583:18:007:586:43
7:51
+0:08
25.2M
25.20 mi13:52:503:20:527:582:52
8:19
+0:28
Finish
26.22 mi14:00:343:28:367:587:44
7:35
-0:44

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

7:33 /mi

Average Pace

7:58 /mi

Slowest Pace

8:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:17:13

95% of race

Time at Steady Pace

11:23

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:57 /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 mi10:56:1424:167:4924:16
7:49
#12464
10K
6.21 mi11:20:5648:587:5324:42
7:57
#13423
15K
9.32 mi11:46:131:14:157:5825:17
8:08
#14106
20K
12.43 mi12:10:581:39:007:5824:45
7:58
#13832
Half
13.11 mi12:16:181:44:207:585:20
7:49
#13775
25K
15.53 mi12:35:172:03:197:5618:59
7:50
#13369
30K
18.64 mi13:00:262:28:287:5825:09
8:06
#13025
20M
20.00 mi13:11:242:39:267:5810:58
8:04
#12811
21M
21.00 mi13:19:552:47:578:008:31
8:31
#12640
35K
21.75 mi13:25:342:53:367:595:39
7:33
#12487
23M
23.00 mi13:35:323:03:347:599:58
7:58
#12295
24M
24.00 mi13:43:153:11:177:587:43
7:43
#12167
40K
24.85 mi13:49:583:18:007:586:43
7:51
#12023
25.2M
25.20 mi13:52:503:20:527:582:52
8:19
#11953
Finish
26.22 mi14:00:343:28:367:587:44
7:35
#11821
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi124643135313515413(Top 58%)4916(Top 43%)4916(Top 271%)
10K6.21 mi3.10 mi13423-9593690-5553690-55514408(Top 54%)4303(Top 38%)4303(Top 237%)
15K9.32 mi3.11 mi14106-6834121-4314121-43115413(Top 58%)4916(Top 43%)4916(Top 271%)
20K12.43 mi3.11 mi13832+2743979+1423979+14213154(Top 49%)3624(Top 32%)3624(Top 199%)
Half13.11 mi0.68 mi13775+573943+363943+3612896(Top 48%)3425(Top 30%)3425(Top 188%)
25K15.53 mi2.42 mi13369+4063725+2183725+21811369(Top 43%)2700(Top 24%)2700(Top 149%)
30K18.64 mi3.11 mi13025+3443561+1643561+16411609(Top 44%)2965(Top 26%)2965(Top 163%)
20M20.00 mi1.36 mi12811+2143456+1053456+10510827(Top 41%)2655(Top 23%)2655(Top 146%)
21M21.00 mi1.00 mi12640+1713377+793377+7910609(Top 40%)2682(Top 23%)2682(Top 148%)
35K21.75 mi0.75 mi12487+1533306+713306+719000(Top 34%)1937(Top 17%)1937(Top 107%)
23M23.00 mi1.25 mi12295+1923228+783228+789518(Top 36%)2283(Top 20%)2283(Top 126%)
24M24.00 mi1.00 mi12167+1283173+553173+559236(Top 35%)2224(Top 19%)2224(Top 122%)
40K24.85 mi0.85 mi12023+1443113+603113+609094(Top 34%)2226(Top 19%)2226(Top 123%)
25.2M25.20 mi0.35 mi11953+703077+363077+368498(Top 32%)2049(Top 18%)2049(Top 113%)
Finish26.22 mi1.02 mi11821+1323022+553022+559246(Top 35%)2355(Top 21%)2355(Top 130%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

15413

Females

4916

F45-49

4916

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

14408

Females

4303

F45-49

4303

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

15413

Females

4916

F45-49

4916

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

13154

Females

3624

F45-49

3624

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

12896

Females

3425

F45-49

3425

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

11369

Females

2700

F45-49

2700

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

11609

Females

2965

F45-49

2965

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

10827

Females

2655

F45-49

2655

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

10609

Females

2682

F45-49

2682

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9000

Females

1937

F45-49

1937

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9518

Females

2283

F45-49

2283

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9236

Females

2224

F45-49

2224

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9094

Females

2226

F45-49

2226

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8498

Females

2049

F45-49

2049

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9246

Females

2355

F45-49

2355

Passing Analysis

Category:
Athletes Passed
2604
Passed By
1961
Net Change
+643
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12464
5K → 10K671026-959#12464#13423
10K → 15K43726-683#13423#14106
15K → 20K32450+274#14106#13832
20K → Half6912+57#13832#13775
Half → 25K41711+406#13775#13369
25K → 30K38844+344#13369#13025
30K → 20M22511+214#13025#12811
20M → 21M19524+171#12811#12640
21M → 35K1541+153#12640#12487
35K → 23M20210+192#12487#12295
23M → 24M14012+128#12295#12167
24M → 40K15713+144#12167#12023
40K → 25.2M744+70#12023#11953
25.2M → Finish14917+132#11953#11821
TOTALS26041961+643
📊

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