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BOSTON MARATHON 2023

Liza Howard

Bib: 153•F

ON

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 2%
Gender (Female)
#0 / 11423
Top 0.4%
Division (F18-39)
#0 / 4884
Top 0.8%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:17
Rank: #508
Start → 5K
18:17 | 5:53/mi
10K· 6.21 mi
36:25
Rank: #488 (+20)
5K → 10K
18:08 | 5:50/mi
15K· 9.32 mi
54:43
Rank: #485 (+3)
10K → 15K
18:18 | 5:53/mi
20K· 12.43 mi
1:13:27
Rank: #520 (-35)
15K → 20K
18:44 | 6:02/mi
Half· 13.11 mi
1:17:37
Rank: #533 (-13)
20K → Half
4:10 | 6:06/mi
25K· 15.53 mi
1:32:33
Rank: #563 (-30)
Half → 25K
14:56 | 6:10/mi
30K· 18.64 mi
1:52:11
Rank: #605 (-42)
25K → 30K
19:38 | 6:19/mi
20M
2:00:54
Rank: #633 (-28)
30K → 20M
8:43 | 6:25/mi
21M
2:07:34
Rank: #642 (-9)
20M → 21M
6:40 | 6:40/mi
35K· 21.75 mi
2:12:05
Rank: #640 (+2)
21M → 35K
4:31 | 6:02/mi
23M
2:20:04
Rank: #640
35K → 23M
7:59 | 6:23/mi
24M
2:26:12
Rank: #638 (+2)
23M → 24M
6:08 | 6:08/mi
40K· 24.85 mi
2:31:34
Rank: #637 (+1)
24M → 40K
5:22 | 6:17/mi
25.2M
2:33:57
Rank: #643 (-6)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:40:14
Rank: #644 (-1)
25.2M → Finish
6:17 | 6:10/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:37
Pace5:55 /mi
2nd Half
Distance13.11 mi
Time1:22:37
Pace6:18 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:05:1818:175:5318:17
5:53
-
10K
6.21 mi10:23:2636:255:5218:08
5:50
-0:03
15K
9.32 mi10:41:4454:435:5218:18
5:53
+0:03
20K
12.43 mi11:00:281:13:275:5518:44
6:02
+0:09
Half
13.11 mi11:04:381:17:375:554:10
6:06
+0:04
25K
15.53 mi11:19:341:32:335:5714:56
6:10
+0:04
30K
18.64 mi11:39:121:52:116:0119:38
6:19
+0:09
20M
20.00 mi11:47:552:00:546:038:43
6:25
+0:06
21M
21.00 mi11:54:352:07:346:046:40
6:40
+0:15
35K
21.75 mi11:59:062:12:056:044:31
6:02
-0:38
23M
23.00 mi12:07:052:20:046:057:59
6:23
+0:21
24M
24.00 mi12:13:132:26:126:066:08
6:08
-0:15
40K
24.85 mi12:18:352:31:346:065:22
6:17
+0:09
25.2M
25.20 mi12:20:582:33:576:072:23
6:55
+0:38
Finish
26.22 mi12:27:152:40:146:076:17
6:10
-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

5:50 /mi

Average Pace

6:07 /mi

Slowest Pace

6:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:11

94% of race

Time at Steady Pace

6:40

4% of race

Time at Slower Pace

2:23

1% of race

Average Pace: 6:07 /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 mi10:05:1818:175:5318:17
5:53
#508
10K
6.21 mi10:23:2636:255:5218:08
5:50
#488
15K
9.32 mi10:41:4454:435:5218:18
5:53
#485
20K
12.43 mi11:00:281:13:275:5518:44
6:02
#520
Half
13.11 mi11:04:381:17:375:554:10
6:06
#533
25K
15.53 mi11:19:341:32:335:5714:56
6:10
#563
30K
18.64 mi11:39:121:52:116:0119:38
6:19
#605
20M
20.00 mi11:47:552:00:546:038:43
6:25
#633
21M
21.00 mi11:54:352:07:346:046:40
6:40
#642
35K
21.75 mi11:59:062:12:056:044:31
6:02
#640
23M
23.00 mi12:07:052:20:046:057:59
6:23
#640
24M
24.00 mi12:13:132:26:126:066:08
6:08
#638
40K
24.85 mi12:18:352:31:346:065:22
6:17
#637
25.2M
25.20 mi12:20:582:33:576:072:23
6:55
#643
Finish
26.22 mi12:27:152:40:146:076:17
6:10
#644
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi5083939497(Top 2%)39(Top 0.3%)39(Top 0.8%)
10K6.21 mi3.10 mi488+2037+237+2488(Top 2%)36(Top 0.3%)36(Top 0.7%)
15K9.32 mi3.11 mi485+338-138-1497(Top 2%)39(Top 0.3%)39(Top 0.8%)
20K12.43 mi3.11 mi520-3539-139-1625(Top 2%)40(Top 0.4%)40(Top 0.8%)
Half13.11 mi0.68 mi533-1340-140-11080(Top 4%)48(Top 0.4%)48(Top 1.0%)
25K15.53 mi2.42 mi563-304040898(Top 3%)46(Top 0.4%)46(Top 0.9%)
30K18.64 mi3.11 mi605-424040966(Top 4%)46(Top 0.4%)46(Top 0.9%)
20M20.00 mi1.36 mi633-2840401191(Top 4%)57(Top 0.5%)57(Top 1%)
21M21.00 mi1.00 mi642-941-141-11025(Top 4%)48(Top 0.4%)48(Top 1.0%)
35K21.75 mi0.75 mi640+24141795(Top 3%)42(Top 0.4%)42(Top 0.9%)
23M23.00 mi1.25 mi64040+140+11051(Top 4%)54(Top 0.5%)54(Top 1%)
24M24.00 mi1.00 mi638+24040853(Top 3%)45(Top 0.4%)45(Top 0.9%)
40K24.85 mi0.85 mi637+14040858(Top 3%)47(Top 0.4%)47(Top 1.0%)
25.2M25.20 mi0.35 mi643-640401536(Top 6%)85(Top 0.7%)85(Top 2%)
Finish26.22 mi1.02 mi644-140401194(Top 4%)57(Top 0.5%)57(Top 1%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

497

Females

39

F18-39

39

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

488

Females

36

F18-39

36

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

497

Females

39

F18-39

39

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

625

Females

40

F18-39

40

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1080

Females

48

F18-39

48

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

898

Females

46

F18-39

46

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

966

Females

46

F18-39

46

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1191

Females

57

F18-39

57

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1025

Females

48

F18-39

48

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

795

Females

42

F18-39

42

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1051

Females

54

F18-39

54

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

853

Females

45

F18-39

45

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

858

Females

47

F18-39

47

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1536

Females

85

F18-39

85

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1194

Females

57

F18-39

57

Passing Analysis

Category:
Athletes Passed
152
Passed By
288
Net Change
-136
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#508
5K → 10K4121+20#508#488
10K → 15K1714+3#488#485
15K → 20K1550-35#485#520
20K → Half013-13#520#533
Half → 25K232-30#533#563
25K → 30K749-42#563#605
30K → 20M836-28#605#633
20M → 21M817-9#633#642
21M → 35K53+2#642#640
35K → 23M16160#640#640
23M → 24M86+2#640#638
24M → 40K1110+1#638#637
40K → 25.2M28-6#637#643
25.2M → Finish1213-1#643#644
TOTALS152288-136
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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