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BOSTON MARATHON 2023

Leigh Barrow

Bib: 4247•F

ME

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 7%
Gender (Female)
#0 / 11423
Top 0.7%
Division (F18-39)
#0 / 4884
Top 1%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:06
Rank: #2126
Start → 5K
20:06 | 6:28/mi
10K· 6.21 mi
39:48
Rank: #2013 (+113)
5K → 10K
19:42 | 6:20/mi
15K· 9.32 mi
59:30
Rank: #1938 (+75)
10K → 15K
19:42 | 6:20/mi
20K· 12.43 mi
1:19:33
Rank: #1942 (-4)
15K → 20K
20:03 | 6:27/mi
Half· 13.11 mi
1:23:51
Rank: #1929 (+13)
20K → Half
4:18 | 6:18/mi
25K· 15.53 mi
1:39:20
Rank: #1868 (+61)
Half → 25K
15:29 | 6:23/mi
30K· 18.64 mi
1:59:34
Rank: #1801 (+67)
25K → 30K
20:14 | 6:31/mi
20M
2:08:29
Rank: #1766 (+35)
30K → 20M
8:55 | 6:34/mi
21M
2:15:34
Rank: #1800 (-34)
20M → 21M
7:05 | 7:05/mi
35K· 21.75 mi
2:20:19
Rank: #1785 (+15)
21M → 35K
4:45 | 6:21/mi
23M
2:28:39
Rank: #1778 (+7)
35K → 23M
8:20 | 6:39/mi
24M
2:35:12
Rank: #1776 (+2)
23M → 24M
6:33 | 6:33/mi
40K· 24.85 mi
2:40:48
Rank: #1749 (+27)
24M → 40K
5:36 | 6:33/mi
25.2M
2:43:04
Rank: #1711 (+38)
40K → 25.2M
2:16 | 6:33/mi
Finish· 26.22 mi
2:49:44
Rank: #1734 (-23)
25.2M → Finish
6:40 | 6:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:51
Pace6:24 /mi
2nd Half
Distance13.11 mi
Time1:25:53
Pace6:33 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0120:066:2820:06
6:28
-
10K
6.21 mi10:41:4339:486:2419:42
6:20
-0:08
15K
9.32 mi11:01:2559:306:2319:42
6:20
0:00
20K
12.43 mi11:21:281:19:336:2420:03
6:27
+0:07
Half
13.11 mi11:25:461:23:516:244:18
6:18
-0:09
25K
15.53 mi11:41:151:39:206:2415:29
6:23
+0:05
30K
18.64 mi12:01:291:59:346:2520:14
6:31
+0:08
20M
20.00 mi12:10:242:08:296:258:55
6:34
+0:03
21M
21.00 mi12:17:292:15:346:277:05
7:05
+0:31
35K
21.75 mi12:22:142:20:196:274:45
6:21
-0:44
23M
23.00 mi12:30:342:28:396:288:20
6:39
+0:18
24M
24.00 mi12:37:072:35:126:286:33
6:33
-0:06
40K
24.85 mi12:42:432:40:486:285:36
6:33
0:00
25.2M
25.20 mi12:44:592:43:046:282:16
6:33
0:00
Finish
26.22 mi12:51:392:49:446:296:40
6:33
0:00

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

6:18 /mi

Average Pace

6:29 /mi

Slowest Pace

7:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:39

96% of race

Time at Steady Pace

7:05

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:28 /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 mi10:22:0120:066:2820:06
6:28
#2126
10K
6.21 mi10:41:4339:486:2419:42
6:20
#2013
15K
9.32 mi11:01:2559:306:2319:42
6:20
#1938
20K
12.43 mi11:21:281:19:336:2420:03
6:27
#1942
Half
13.11 mi11:25:461:23:516:244:18
6:18
#1929
25K
15.53 mi11:41:151:39:206:2415:29
6:23
#1868
30K
18.64 mi12:01:291:59:346:2520:14
6:31
#1801
20M
20.00 mi12:10:242:08:296:258:55
6:34
#1766
21M
21.00 mi12:17:292:15:346:277:05
7:05
#1800
35K
21.75 mi12:22:142:20:196:274:45
6:21
#1785
23M
23.00 mi12:30:342:28:396:288:20
6:39
#1778
24M
24.00 mi12:37:072:35:126:286:33
6:33
#1776
40K
24.85 mi12:42:432:40:486:285:36
6:33
#1749
25.2M
25.20 mi12:44:592:43:046:282:16
6:33
#1711
Finish
26.22 mi12:51:392:49:446:296:40
6:33
#1734
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi212696961840(Top 7%)76(Top 0.7%)76(Top 2%)
10K6.21 mi3.10 mi2013+11382+1482+141948(Top 7%)80(Top 0.7%)80(Top 2%)
15K9.32 mi3.11 mi1938+7581+181+11840(Top 7%)76(Top 0.7%)76(Top 2%)
20K12.43 mi3.11 mi1942-480+180+12069(Top 8%)80(Top 0.7%)80(Top 2%)
Half13.11 mi0.68 mi1929+1380801831(Top 7%)71(Top 0.6%)71(Top 1%)
25K15.53 mi2.42 mi1868+6180801677(Top 6%)70(Top 0.6%)70(Top 1%)
30K18.64 mi3.11 mi1801+6776+476+41617(Top 6%)70(Top 0.6%)70(Top 1%)
20M20.00 mi1.36 mi1766+3576761706(Top 6%)78(Top 0.7%)78(Top 2%)
21M21.00 mi1.00 mi1800-3475+175+12575(Top 10%)141(Top 1%)141(Top 3%)
35K21.75 mi0.75 mi1785+1576-176-11796(Top 7%)87(Top 0.8%)87(Top 2%)
23M23.00 mi1.25 mi1778+776762014(Top 8%)105(Top 0.9%)105(Top 2%)
24M24.00 mi1.00 mi1776+277-177-12347(Top 9%)149(Top 1%)149(Top 3%)
40K24.85 mi0.85 mi1749+2777771760(Top 7%)105(Top 0.9%)105(Top 2%)
25.2M25.20 mi0.35 mi1711+3875+275+2573(Top 2%)33(Top 0.3%)33(Top 0.7%)
Finish26.22 mi1.02 mi1734-2377-277-22720(Top 10%)240(Top 2%)240(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1840

Females

76

F18-39

76

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

1948

Females

80

F18-39

80

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1840

Females

76

F18-39

76

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2069

Females

80

F18-39

80

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1831

Females

71

F18-39

71

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1677

Females

70

F18-39

70

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1617

Females

70

F18-39

70

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1706

Females

78

F18-39

78

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2575

Females

141

F18-39

141

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1796

Females

87

F18-39

87

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2014

Females

105

F18-39

105

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2347

Females

149

F18-39

149

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1760

Females

105

F18-39

105

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

573

Females

33

F18-39

33

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2720

Females

240

F18-39

240

Passing Analysis

Category:
Athletes Passed
769
Passed By
377
Net Change
+392
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2126
5K → 10K17764+113#2126#2013
10K → 15K10328+75#2013#1938
15K → 20K5458-4#1938#1942
20K → Half207+13#1942#1929
Half → 25K7312+61#1929#1868
25K → 30K9023+67#1868#1801
30K → 20M4914+35#1801#1766
20M → 21M1650-34#1766#1800
21M → 35K3015+15#1800#1785
35K → 23M3427+7#1785#1778
23M → 24M2422+2#1778#1776
24M → 40K3912+27#1776#1749
40K → 25.2M380+38#1749#1711
25.2M → Finish2245-23#1711#1734
TOTALS769377+392
📊

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