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BOSTON MARATHON 2023

Lindsay Sammis

Bib: 17730•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 17%
Division (F18-39)
#0 / 4884
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:51
Rank: #11247
Start → 5K
7:41/mi
23:51 split
10K· 6.21 mi
47:14
Rank: #10938 (+309)
5K → 10K
7:32/mi
23:23 split
15K· 9.32 mi
1:10:48
Rank: #10900 (+38)
10K → 15K
7:35/mi
23:34 split
20K· 12.43 mi
1:34:58
Rank: #11045 (-145)
15K → 20K
7:47/mi
24:10 split
Half· 13.11 mi
1:40:08
Rank: #11028 (+17)
20K → Half
7:34/mi
5:10 split
25K· 15.53 mi
1:58:49
Rank: #10892 (+136)
Half → 25K
7:42/mi
18:41 split
30K· 18.64 mi
2:22:54
Rank: #10485 (+407)
25K → 30K
7:45/mi
24:05 split
20M
2:33:28
Rank: #10345 (+140)
30K → 20M
7:47/mi
10:34 split
21M
2:41:44
Rank: #10229 (+116)
20M → 21M
8:16/mi
8:16 split
35K· 21.75 mi
2:47:31
Rank: #10219 (+10)
21M → 35K
7:44/mi
5:47 split
23M
2:57:14
Rank: #10047 (+172)
35K → 23M
7:46/mi
9:43 split
24M
3:04:31
Rank: #9838 (+209)
23M → 24M
7:17/mi
7:17 split
40K· 24.85 mi
3:11:03
Rank: #9732 (+106)
24M → 40K
7:38/mi
6:32 split
25.2M
3:13:52
Rank: #9659 (+73)
40K → 25.2M
8:10/mi
2:49 split
Finish· 26.22 mi
3:21:25
Rank: #9564 (+95)
25.2M → Finish
7:25/mi
7:33 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:08
Pace7:38 /mi
2nd Half
Distance13.11 mi
Time1:41:17
Pace7:44 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2723:517:4123:51
7:41
-
10K
6.21 mi11:37:5047:147:3623:23
7:32
-0:09
15K
9.32 mi12:01:241:10:487:3623:34
7:35
+0:03
20K
12.43 mi12:25:341:34:587:3924:10
7:47
+0:12
Half
13.11 mi12:30:441:40:087:385:10
7:34
-0:13
25K
15.53 mi12:49:251:58:497:3918:41
7:42
+0:08
30K
18.64 mi13:13:302:22:547:4024:05
7:45
+0:03
20M
20.00 mi13:24:042:33:287:4010:34
7:47
+0:02
21M
21.00 mi13:32:202:41:447:428:16
8:16
+0:29
35K
21.75 mi13:38:072:47:317:425:47
7:44
-0:32
23M
23.00 mi13:47:502:57:147:429:43
7:46
+0:02
24M
24.00 mi13:55:073:04:317:417:17
7:17
-0:29
40K
24.85 mi14:01:393:11:037:416:32
7:38
+0:21
25.2M
25.20 mi14:04:283:13:527:422:49
8:10
+0:32
Finish
26.22 mi14:12:013:21:257:417:33
7:25
-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

7:17 /mi

Average Pace

7:41 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:20

94% of race

Time at Steady Pace

11:05

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:41 /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 mi11:14:2723:517:4123:51
7:41
#11247
10K
6.21 mi11:37:5047:147:3623:23
7:32
#10938
15K
9.32 mi12:01:241:10:487:3623:34
7:35
#10900
20K
12.43 mi12:25:341:34:587:3924:10
7:47
#11045
Half
13.11 mi12:30:441:40:087:385:10
7:34
#11028
25K
15.53 mi12:49:251:58:497:3918:41
7:42
#10892
30K
18.64 mi13:13:302:22:547:4024:05
7:45
#10485
20M
20.00 mi13:24:042:33:287:4010:34
7:47
#10345
21M
21.00 mi13:32:202:41:447:428:16
8:16
#10229
35K
21.75 mi13:38:072:47:317:425:47
7:44
#10219
23M
23.00 mi13:47:502:57:147:429:43
7:46
#10047
24M
24.00 mi13:55:073:04:317:417:17
7:17
#9838
40K
24.85 mi14:01:393:11:037:416:32
7:38
#9732
25.2M
25.20 mi14:04:283:13:527:422:49
8:10
#9659
Finish
26.22 mi14:12:013:21:257:417:33
7:25
#9564
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi112472455245510891(Top 41%)2277(Top 20%)2277(Top 47%)
10K6.21 mi3.10 mi10938+3092295+1602295+16010679(Top 40%)2143(Top 19%)2143(Top 44%)
15K9.32 mi3.11 mi10900+382280+152280+1510891(Top 41%)2277(Top 20%)2277(Top 47%)
20K12.43 mi3.11 mi11045-1452351-712351-7111552(Top 43%)2706(Top 24%)2706(Top 55%)
Half13.11 mi0.68 mi11028+172342+92342+910848(Top 41%)2277(Top 20%)2277(Top 47%)
25K15.53 mi2.42 mi10892+1362296+462296+4610340(Top 39%)2147(Top 19%)2147(Top 44%)
30K18.64 mi3.11 mi10485+4072145+1512145+1519013(Top 34%)1716(Top 15%)1716(Top 35%)
20M20.00 mi1.36 mi10345+1402089+562089+568712(Top 33%)1677(Top 15%)1677(Top 34%)
21M21.00 mi1.00 mi10229+1162059+302059+309050(Top 34%)1947(Top 17%)1947(Top 40%)
35K21.75 mi0.75 mi10219+102067-82067-810168(Top 38%)2437(Top 21%)2437(Top 50%)
23M23.00 mi1.25 mi10047+1722016+512016+518174(Top 31%)1664(Top 15%)1664(Top 34%)
24M24.00 mi1.00 mi9838+2091952+641952+646308(Top 24%)1027(Top 9%)1027(Top 21%)
40K24.85 mi0.85 mi9732+1061930+221930+227601(Top 29%)1608(Top 14%)1608(Top 33%)
25.2M25.20 mi0.35 mi9659+731912+181912+187582(Top 28%)1652(Top 14%)1652(Top 34%)
Finish26.22 mi1.02 mi9564+951896+161896+167885(Top 30%)1784(Top 16%)1784(Top 37%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

10891

Females

2277

F18-39

2277

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

10679

Females

2143

F18-39

2143

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

10891

Females

2277

F18-39

2277

15K→20K

9.3 - 12.4 mi

Top 43%
×5story building
+106ft-86ft

Overall

11552

Females

2706

F18-39

2706

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

10848

Females

2277

F18-39

2277

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

10340

Females

2147

F18-39

2147

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9013

Females

1716

F18-39

1716

30K→20M

18.6 - 20.0 mi

Top 33%
×5story building
+64ft-50ft

Overall

8712

Females

1677

F18-39

1677

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9050

Females

1947

F18-39

1947

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

10168

Females

2437

F18-39

2437

35K→23M

21.8 - 23.0 mi

Top 31%
×5story building
+23ft-63ft

Overall

8174

Females

1664

F18-39

1664

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6308

Females

1027

F18-39

1027

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7601

Females

1608

F18-39

1608

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7582

Females

1652

F18-39

1652

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

7885

Females

1784

F18-39

1784

Passing Analysis

Category:
Athletes Passed
2535*
Passed By
852
Net Change
+1683
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11247
5K → 10K488179+309#11247#10938
10K → 15K203165+38#10938#10900
15K → 20K110255-145#10900#11045
20K → Half3518+17#11045#11028
Half → 25K18953+136#11028#10892
25K → 30K43225+407#10892#10485
30K → 20M155*15+140#10485#10345
20M → 21M14933+116#10345#10229
21M → 35K5141+10#10229#10219
35K → 23M182*10+172#10219#10047
23M → 24M215*6+209#10047#9838
24M → 40K128*22+106#9838#9732
40K → 25.2M807+73#9732#9659
25.2M → Finish11823+95#9659#9564
TOTALS2535*852+1683

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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