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BOSTON MARATHON 2023

Lainie Smith

Bib: 27372•F

FL

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 8%
Gender (Female)
#0 / 11423
Top 0.8%
Division (F18-39)
#0 / 4884
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:47
Rank: #1693
Start → 5K
19:47 | 6:22/mi
10K· 6.21 mi
40:00
Rank: #2180 (-487)
5K → 10K
20:13 | 6:30/mi
15K· 9.32 mi
1:00:06
Rank: #2252 (-72)
10K → 15K
20:06 | 6:28/mi
20K· 12.43 mi
1:20:10
Rank: #2201 (+51)
15K → 20K
20:04 | 6:28/mi
Half· 13.11 mi
1:24:33
Rank: #2200 (+1)
20K → Half
4:23 | 6:25/mi
25K· 15.53 mi
1:40:10
Rank: #2132 (+68)
Half → 25K
15:37 | 6:26/mi
30K· 18.64 mi
2:00:44
Rank: #2098 (+34)
25K → 30K
20:34 | 6:37/mi
20M
2:09:53
Rank: #2108 (-10)
30K → 20M
9:09 | 6:44/mi
21M
2:17:01
Rank: #2126 (-18)
20M → 21M
7:08 | 7:08/mi
35K· 21.75 mi
2:21:54
Rank: #2142 (-16)
21M → 35K
4:53 | 6:32/mi
23M
2:30:25
Rank: #2135 (+7)
35K → 23M
8:31 | 6:48/mi
24M
2:37:04
Rank: #2139 (-4)
23M → 24M
6:39 | 6:39/mi
40K· 24.85 mi
2:42:55
Rank: #2154 (-15)
24M → 40K
5:51 | 6:51/mi
25.2M
2:45:34
Rank: #2175 (-21)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
2:52:34
Rank: #2210 (-35)
25.2M → Finish
7:00 | 6:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:33
Pace6:27 /mi
2nd Half
Distance13.11 mi
Time1:28:01
Pace6:43 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:35:1119:476:2219:47
6:22
-
10K
6.21 mi11:55:2440:006:2620:13
6:30
+0:08
15K
9.32 mi12:15:301:00:066:2720:06
6:28
-0:02
20K
12.43 mi12:35:341:20:106:2720:04
6:28
0:00
Half
13.11 mi12:39:571:24:336:274:23
6:25
-0:03
25K
15.53 mi12:55:341:40:106:2715:37
6:26
+0:01
30K
18.64 mi13:16:082:00:446:2920:34
6:37
+0:11
20M
20.00 mi13:25:172:09:536:309:09
6:44
+0:07
21M
21.00 mi13:32:252:17:016:317:08
7:08
+0:24
35K
21.75 mi13:37:182:21:546:314:53
6:32
-0:36
23M
23.00 mi13:45:492:30:256:328:31
6:48
+0:16
24M
24.00 mi13:52:282:37:046:336:39
6:39
-0:09
40K
24.85 mi13:58:192:42:556:335:51
6:51
+0:12
25.2M
25.20 mi14:00:582:45:346:342:39
7:41
+0:50
Finish
26.22 mi14:07:582:52:346:357:00
6:52
-0:49

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

6:22 /mi

Average Pace

6:35 /mi

Slowest Pace

7:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

39:47

23% of race

Time at Steady Pace

1:41:38

59% of race

Time at Slower Pace

31:09

18% of race

Average Pace: 6:35 /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 mi11:35:1119:476:2219:47
6:22
#1693
10K
6.21 mi11:55:2440:006:2620:13
6:30
#2180
15K
9.32 mi12:15:301:00:066:2720:06
6:28
#2252
20K
12.43 mi12:35:341:20:106:2720:04
6:28
#2201
Half
13.11 mi12:39:571:24:336:274:23
6:25
#2200
25K
15.53 mi12:55:341:40:106:2715:37
6:26
#2132
30K
18.64 mi13:16:082:00:446:2920:34
6:37
#2098
20M
20.00 mi13:25:172:09:536:309:09
6:44
#2108
21M
21.00 mi13:32:252:17:016:317:08
7:08
#2126
35K
21.75 mi13:37:182:21:546:314:53
6:32
#2142
23M
23.00 mi13:45:492:30:256:328:31
6:48
#2135
24M
24.00 mi13:52:282:37:046:336:39
6:39
#2139
40K
24.85 mi13:58:192:42:556:335:51
6:51
#2154
25.2M
25.20 mi14:00:582:45:346:342:39
7:41
#2175
Finish
26.22 mi14:07:582:52:346:357:00
6:52
#2210
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi169378782468(Top 9%)99(Top 0.9%)99(Top 2%)
10K6.21 mi3.10 mi2180-48791-1391-132850(Top 11%)124(Top 1%)124(Top 3%)
15K9.32 mi3.11 mi2252-7292-192-12468(Top 9%)99(Top 0.9%)99(Top 2%)
20K12.43 mi3.11 mi2201+5190+290+22085(Top 8%)82(Top 0.7%)82(Top 2%)
Half13.11 mi0.68 mi2200+190902408(Top 9%)94(Top 0.8%)94(Top 2%)
25K15.53 mi2.42 mi2132+6885+585+51928(Top 7%)81(Top 0.7%)81(Top 2%)
30K18.64 mi3.11 mi2098+3484+184+12053(Top 8%)91(Top 0.8%)91(Top 2%)
20M20.00 mi1.36 mi2108-1087-387-32465(Top 9%)124(Top 1%)124(Top 3%)
21M21.00 mi1.00 mi2126-1887872796(Top 11%)165(Top 1%)165(Top 3%)
35K21.75 mi0.75 mi2142-1688-188-12623(Top 10%)140(Top 1%)140(Top 3%)
23M23.00 mi1.25 mi2135+787+187+12697(Top 10%)166(Top 1%)166(Top 3%)
24M24.00 mi1.00 mi2139-485+285+22869(Top 11%)198(Top 2%)198(Top 4%)
40K24.85 mi0.85 mi2154-1586-186-13054(Top 11%)241(Top 2%)241(Top 5%)
25.2M25.20 mi0.35 mi2175-2186864838(Top 18%)645(Top 6%)645(Top 13%)
Finish26.22 mi1.02 mi2210-3592-692-64472(Top 17%)565(Top 5%)565(Top 12%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2468

Females

99

F18-39

99

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2850

Females

124

F18-39

124

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2468

Females

99

F18-39

99

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2085

Females

82

F18-39

82

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2408

Females

94

F18-39

94

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1928

Females

81

F18-39

81

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2053

Females

91

F18-39

91

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2465

Females

124

F18-39

124

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

2796

Females

165

F18-39

165

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2623

Females

140

F18-39

140

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2697

Females

166

F18-39

166

23M→24M

23.0 - 24.0 mi

Top 11%
×6stories
+12ft-82ft

Overall

2869

Females

198

F18-39

198

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3054

Females

241

F18-39

241

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

4838

Females

645

F18-39

645

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4472

Females

565

F18-39

565

Passing Analysis

Category:
Athletes Passed
480
Passed By
997
Net Change
-517
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1693
5K → 10K7494-487#1693#2180
10K → 15K41113-72#2180#2252
15K → 20K8231+51#2252#2201
20K → Half87+1#2201#2200
Half → 25K8416+68#2200#2132
25K → 30K8248+34#2132#2098
30K → 20M3040-10#2098#2108
20M → 21M2442-18#2108#2126
21M → 35K1329-16#2126#2142
35K → 23M4134+7#2142#2135
23M → 24M2630-4#2135#2139
24M → 40K2237-15#2139#2154
40K → 25.2M627-21#2154#2175
25.2M → Finish1449-35#2175#2210
TOTALS480997-517
📊

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