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BOSTON MARATHON 2023

Samantha Bottom-Tanzer

Bib: 16070•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 37%
Gender (Female)
#0 / 11423
Top 17%
Division (F18-39)
#0 / 4884
Top 31%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:21
Rank: #9782
Start → 5K
23:21 | 7:31/mi
10K· 6.21 mi
46:52
Rank: #10416 (-634)
5K → 10K
23:31 | 7:34/mi
15K· 9.32 mi
1:10:25
Rank: #10553 (-137)
10K → 15K
23:33 | 7:35/mi
20K· 12.43 mi
1:34:25
Rank: #10692 (-139)
15K → 20K
24:00 | 7:43/mi
Half· 13.11 mi
1:39:30
Rank: #10644 (+48)
20K → Half
5:05 | 7:27/mi
25K· 15.53 mi
1:58:07
Rank: #10515 (+129)
Half → 25K
18:37 | 7:41/mi
30K· 18.64 mi
2:22:31
Rank: #10328 (+187)
25K → 30K
24:24 | 7:51/mi
20M
2:33:11
Rank: #10236 (+92)
30K → 20M
10:40 | 7:51/mi
21M
2:41:40
Rank: #10207 (+29)
20M → 21M
8:29 | 8:29/mi
35K· 21.75 mi
2:47:23
Rank: #10167 (+40)
21M → 35K
5:43 | 7:38/mi
23M
2:57:10
Rank: #10025 (+142)
35K → 23M
9:47 | 7:49/mi
24M
3:04:52
Rank: #9963 (+62)
23M → 24M
7:42 | 7:42/mi
40K· 24.85 mi
3:11:38
Rank: #9914 (+49)
24M → 40K
6:46 | 7:55/mi
25.2M
3:14:28
Rank: #9865 (+49)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:22:00
Rank: #9729 (+136)
25.2M → Finish
7:32 | 7:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:30
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:42:30
Pace7:49 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:4023:217:3123:21
7:31
-
10K
6.21 mi11:37:1146:527:3323:31
7:34
+0:03
15K
9.32 mi12:00:441:10:257:3323:33
7:35
+0:01
20K
12.43 mi12:24:441:34:257:3624:00
7:43
+0:08
Half
13.11 mi12:29:491:39:307:355:05
7:27
-0:16
25K
15.53 mi12:48:261:58:077:3618:37
7:41
+0:14
30K
18.64 mi13:12:502:22:317:3924:24
7:51
+0:10
20M
20.00 mi13:23:302:33:117:4010:40
7:51
0:00
21M
21.00 mi13:31:592:41:407:428:29
8:29
+0:38
35K
21.75 mi13:37:422:47:237:425:43
7:38
-0:51
23M
23.00 mi13:47:292:57:107:429:47
7:49
+0:11
24M
24.00 mi13:55:113:04:527:427:42
7:42
-0:07
40K
24.85 mi14:01:573:11:387:436:46
7:55
+0:13
25.2M
25.20 mi14:04:473:14:287:432:50
8:13
+0:18
Finish
26.22 mi14:12:193:22:007:437:32
7:24
-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

7:24 /mi

Average Pace

7:43 /mi

Slowest Pace

8:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:41

94% of race

Time at Steady Pace

11:19

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:42 /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 mi11:13:4023:217:3123:21
7:31
#9782
10K
6.21 mi11:37:1146:527:3323:31
7:34
#10416
15K
9.32 mi12:00:441:10:257:3323:33
7:35
#10553
20K
12.43 mi12:24:441:34:257:3624:00
7:43
#10692
Half
13.11 mi12:29:491:39:307:355:05
7:27
#10644
25K
15.53 mi12:48:261:58:077:3618:37
7:41
#10515
30K
18.64 mi13:12:502:22:317:3924:24
7:51
#10328
20M
20.00 mi13:23:302:33:117:4010:40
7:51
#10236
21M
21.00 mi13:31:592:41:407:428:29
8:29
#10207
35K
21.75 mi13:37:422:47:237:425:43
7:38
#10167
23M
23.00 mi13:47:292:57:107:429:47
7:49
#10025
24M
24.00 mi13:55:113:04:527:427:42
7:42
#9963
40K
24.85 mi14:01:573:11:387:436:46
7:55
#9914
25.2M
25.20 mi14:04:473:14:287:432:50
8:13
#9865
Finish
26.22 mi14:12:193:22:007:437:32
7:24
#9729
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi97821753175310861(Top 41%)2269(Top 20%)2269(Top 46%)
10K6.21 mi3.10 mi10416-6342037-2842037-28411074(Top 42%)2361(Top 21%)2361(Top 48%)
15K9.32 mi3.11 mi10553-1372093-562093-5610861(Top 41%)2269(Top 20%)2269(Top 46%)
20K12.43 mi3.11 mi10692-1392185-922185-9211127(Top 42%)2475(Top 22%)2475(Top 51%)
Half13.11 mi0.68 mi10644+482153+322153+329923(Top 37%)1873(Top 16%)1873(Top 38%)
25K15.53 mi2.42 mi10515+1292103+502103+5010166(Top 38%)2077(Top 18%)2077(Top 43%)
30K18.64 mi3.11 mi10328+1872068+352068+359794(Top 37%)2070(Top 18%)2070(Top 42%)
20M20.00 mi1.36 mi10236+922041+272041+279268(Top 35%)1927(Top 17%)1927(Top 39%)
21M21.00 mi1.00 mi10207+292048-72048-710440(Top 39%)2609(Top 23%)2609(Top 53%)
35K21.75 mi0.75 mi10167+402041+72041+79635(Top 36%)2217(Top 19%)2217(Top 45%)
23M23.00 mi1.25 mi10025+1422005+362005+368559(Top 32%)1834(Top 16%)1834(Top 38%)
24M24.00 mi1.00 mi9963+622016-112016-119142(Top 34%)2185(Top 19%)2185(Top 45%)
40K24.85 mi0.85 mi9914+492022-62022-69526(Top 36%)2440(Top 21%)2440(Top 50%)
25.2M25.20 mi0.35 mi9865+492011+112011+117916(Top 30%)1828(Top 16%)1828(Top 37%)
Finish26.22 mi1.02 mi9729+1361977+341977+347798(Top 29%)1756(Top 15%)1756(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

10861

Females

2269

F18-39

2269

5K→10K

3.1 - 6.2 mi

Top 42%
×5stories
+79ft-138ft

Overall

11074

Females

2361

F18-39

2361

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

10861

Females

2269

F18-39

2269

15K→20K

9.3 - 12.4 mi

Top 42%
×5stories
+106ft-86ft

Overall

11127

Females

2475

F18-39

2475

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9923

Females

1873

F18-39

1873

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10166

Females

2077

F18-39

2077

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9794

Females

2070

F18-39

2070

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9268

Females

1927

F18-39

1927

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10440

Females

2609

F18-39

2609

21M→35K

21.0 - 21.8 mi

Top 36%
×7stories
+17ft-86ft

Overall

9635

Females

2217

F18-39

2217

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

8559

Females

1834

F18-39

1834

23M→24M

23.0 - 24.0 mi

Top 34%
×6stories
+12ft-82ft

Overall

9142

Females

2185

F18-39

2185

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9526

Females

2440

F18-39

2440

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7916

Females

1828

F18-39

1828

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

7798

Females

1756

F18-39

1756

Passing Analysis

Category:
Athletes Passed
1694*
Passed By
1640
Net Change
+53
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9782
5K → 10K100733-634#9782#10416
10K → 15K137274-137#10416#10553
15K → 20K105244-139#10553#10692
20K → Half5911+48#10692#10644
Half → 25K18556+129#10644#10515
25K → 30K25972+187#10515#10328
30K → 20M126*34+92#10328#10236
20M → 21M9465+29#10236#10207
21M → 35K6424+40#10207#10167
35K → 23M162*20+142#10167#10025
23M → 24M10442+62#10025#9963
24M → 40K9445+49#9963#9914
40K → 25.2M556+49#9914#9865
25.2M → Finish150*14+136#9865#9729
TOTALS1694*1640+53

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

📊

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