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BOSTON MARATHON 2023

Samantha Engebretsen

Bib: 17818•F

MT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 29%
Gender (Female)
#0 / 11423
Top 10%
Division (F18-39)
#0 / 4884
Top 18%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:31
Rank: #13159
Start → 5K
24:31 | 7:53/mi
10K· 6.21 mi
48:20
Rank: #12516 (+643)
5K → 10K
23:49 | 7:40/mi
15K· 9.32 mi
1:12:02
Rank: #12053 (+463)
10K → 15K
23:42 | 7:38/mi
20K· 12.43 mi
1:35:32
Rank: #11415 (+638)
15K → 20K
23:30 | 7:34/mi
Half· 13.11 mi
1:40:32
Rank: #11263 (+152)
20K → Half
5:00 | 7:20/mi
25K· 15.53 mi
1:58:13
Rank: #10566 (+697)
Half → 25K
17:41 | 7:18/mi
30K· 18.64 mi
2:20:35
Rank: #9507 (+1059)
25K → 30K
22:22 | 7:12/mi
20M
2:30:20
Rank: #9073 (+434)
30K → 20M
9:45 | 7:10/mi
21M
2:37:45
Rank: #8741 (+332)
20M → 21M
7:25 | 7:25/mi
35K· 21.75 mi
2:42:53
Rank: #8556 (+185)
21M → 35K
5:08 | 6:52/mi
23M
2:51:53
Rank: #8254 (+302)
35K → 23M
9:00 | 7:11/mi
24M
2:58:53
Rank: #8043 (+211)
23M → 24M
7:00 | 7:00/mi
40K· 24.85 mi
3:04:56
Rank: #7864 (+179)
24M → 40K
6:03 | 7:05/mi
25.2M
3:07:32
Rank: #7777 (+87)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
3:14:31
Rank: #7593 (+184)
25.2M → Finish
6:59 | 6:51/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:40:32
Pace7:40 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:33:59
Pace7:10 /mi
📊Negative Split: 6.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1824:317:5324:31
7:53
-
10K
6.21 mi11:39:0748:207:4723:49
7:40
-0:13
15K
9.32 mi12:02:491:12:027:4423:42
7:38
-0:02
20K
12.43 mi12:26:191:35:327:4123:30
7:34
-0:04
Half
13.11 mi12:31:191:40:327:405:00
7:20
-0:14
25K
15.53 mi12:49:001:58:137:3717:41
7:18
-0:02
30K
18.64 mi13:11:222:20:357:3222:22
7:12
-0:06
20M
20.00 mi13:21:072:30:207:319:45
7:10
-0:02
21M
21.00 mi13:28:322:37:457:317:25
7:25
+0:15
35K
21.75 mi13:33:402:42:537:295:08
6:52
-0:33
23M
23.00 mi13:42:402:51:537:289:00
7:11
+0:19
24M
24.00 mi13:49:402:58:537:277:00
7:00
-0:11
40K
24.85 mi13:55:433:04:567:266:03
7:05
+0:05
25.2M
25.20 mi13:58:193:07:327:272:36
7:32
+0:27
Finish
26.22 mi14:05:183:14:317:256:59
6:51
-0:41

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

6:51 /mi

Average Pace

7:25 /mi

Slowest Pace

7:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:59

51% of race

Time at Steady Pace

1:35:32

49% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:25 /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 mi11:15:1824:317:5324:31
7:53
#13159
10K
6.21 mi11:39:0748:207:4723:49
7:40
#12516
15K
9.32 mi12:02:491:12:027:4423:42
7:38
#12053
20K
12.43 mi12:26:191:35:327:4123:30
7:34
#11415
Half
13.11 mi12:31:191:40:327:405:00
7:20
#11263
25K
15.53 mi12:49:001:58:137:3717:41
7:18
#10566
30K
18.64 mi13:11:222:20:357:3222:22
7:12
#9507
20M
20.00 mi13:21:072:30:207:319:45
7:10
#9073
21M
21.00 mi13:28:322:37:457:317:25
7:25
#8741
35K
21.75 mi13:33:402:42:537:295:08
6:52
#8556
23M
23.00 mi13:42:402:51:537:289:00
7:11
#8254
24M
24.00 mi13:49:402:58:537:277:00
7:00
#8043
40K
24.85 mi13:55:433:04:567:266:03
7:05
#7864
25.2M
25.20 mi13:58:193:07:327:272:36
7:32
#7777
Finish
26.22 mi14:05:183:14:317:256:59
6:51
#7593
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi131593523352311242(Top 42%)2478(Top 22%)2478(Top 51%)
10K6.21 mi3.10 mi12516+6433164+3593164+35911937(Top 45%)2824(Top 25%)2824(Top 58%)
15K9.32 mi3.11 mi12053+4632918+2462918+24611242(Top 42%)2478(Top 22%)2478(Top 51%)
20K12.43 mi3.11 mi11415+6382558+3602558+3609816(Top 37%)1826(Top 16%)1826(Top 37%)
Half13.11 mi0.68 mi11263+1522476+822476+828856(Top 33%)1406(Top 12%)1406(Top 29%)
25K15.53 mi2.42 mi10566+6972126+3502126+3507271(Top 27%)934(Top 8%)934(Top 19%)
30K18.64 mi3.11 mi9507+10591689+4371689+4375510(Top 21%)509(Top 4%)509(Top 10%)
20M20.00 mi1.36 mi9073+4341536+1531536+1535018(Top 19%)464(Top 4%)464(Top 10%)
21M21.00 mi1.00 mi8741+3321419+1171419+1174233(Top 16%)355(Top 3%)355(Top 7%)
35K21.75 mi0.75 mi8556+1851369+501369+504622(Top 17%)429(Top 4%)429(Top 9%)
23M23.00 mi1.25 mi8254+3021277+921277+924759(Top 18%)481(Top 4%)481(Top 10%)
24M24.00 mi1.00 mi8043+2111218+591218+594713(Top 18%)501(Top 4%)501(Top 10%)
40K24.85 mi0.85 mi7864+1791172+461172+464288(Top 16%)479(Top 4%)479(Top 10%)
25.2M25.20 mi0.35 mi7777+871151+211151+214185(Top 16%)511(Top 4%)511(Top 10%)
Finish26.22 mi1.02 mi7593+1841109+421109+424399(Top 17%)556(Top 5%)556(Top 11%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11242

Females

2478

F18-39

2478

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

11937

Females

2824

F18-39

2824

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11242

Females

2478

F18-39

2478

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9816

Females

1826

F18-39

1826

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

8856

Females

1406

F18-39

1406

Half→25K

13.1 - 15.5 mi

Top 27%
×4stories
+66ft-88ft

Overall

7271

Females

934

F18-39

934

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5510

Females

509

F18-39

509

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5018

Females

464

F18-39

464

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4233

Females

355

F18-39

355

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4622

Females

429

F18-39

429

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

4759

Females

481

F18-39

481

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

4713

Females

501

F18-39

501

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4288

Females

479

F18-39

479

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4185

Females

511

F18-39

511

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4399

Females

556

F18-39

556

Passing Analysis

Category:
Athletes Passed
5729*
Passed By
163
Net Change
+5566
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13159
5K → 10K755112+643#13159#12516
10K → 15K49431+463#12516#12053
15K → 20K6468+638#12053#11415
20K → Half1531+152#11415#11263
Half → 25K6970+697#11263#10566
25K → 30K1059*0+1059#10566#9507
30K → 20M4340+434#9507#9073
20M → 21M3320+332#9073#8741
21M → 35K1850+185#8741#8556
35K → 23M3042+302#8556#8254
23M → 24M2110+211#8254#8043
24M → 40K1801+179#8043#7864
40K → 25.2M881+87#7864#7777
25.2M → Finish1917+184#7777#7593
TOTALS5729*163+5566

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

📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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