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BOSTON MARATHON 2023

Marni Sanders

Bib: 17269•F

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0:00
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 46%
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:57
Rank: #14253
Start → 5K
8:02/mi
24:57 split
10K· 6.21 mi
49:43
Rank: #14404 (-151)
5K → 10K
7:58/mi
24:46 split
15K· 9.32 mi
1:14:55
Rank: #14645 (-241)
10K → 15K
8:07/mi
25:12 split
20K· 12.43 mi
1:41:18
Rank: #15266 (-621)
15K → 20K
8:30/mi
26:23 split
Half· 13.11 mi
1:46:51
Rank: #15260 (+6)
20K → Half
8:08/mi
5:33 split
25K· 15.53 mi
2:07:18
Rank: #15322 (-62)
Half → 25K
8:26/mi
20:27 split
30K· 18.64 mi
2:34:52
Rank: #15540 (-218)
25K → 30K
8:52/mi
27:34 split
20M
2:46:55
Rank: #15533 (+7)
30K → 20M
8:52/mi
12:03 split
21M
2:56:41
Rank: #15623 (-90)
20M → 21M
9:46/mi
9:46 split
35K· 21.75 mi
3:02:55
Rank: #15574 (+49)
21M → 35K
8:20/mi
6:14 split
23M
3:13:55
Rank: #15505 (+69)
35K → 23M
8:47/mi
11:00 split
24M
3:22:44
Rank: #15532 (-27)
23M → 24M
8:49/mi
8:49 split
40K· 24.85 mi
3:30:15
Rank: #15506 (+26)
24M → 40K
8:47/mi
7:31 split
25.2M
3:33:36
Rank: #15535 (-29)
40K → 25.2M
9:43/mi
3:21 split
Finish· 26.22 mi
3:42:13
Rank: #15496 (+39)
25.2M → Finish
8:27/mi
8:37 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:51
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time1:55:22
Pace8:48 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:3224:578:0224:57
8:02
-
10K
6.21 mi11:40:1849:438:0024:46
7:58
-0:04
15K
9.32 mi12:05:301:14:558:0225:12
8:07
+0:09
20K
12.43 mi12:31:531:41:188:0926:23
8:30
+0:23
Half
13.11 mi12:37:261:46:518:095:33
8:08
-0:22
25K
15.53 mi12:57:532:07:188:1220:27
8:26
+0:18
30K
18.64 mi13:25:272:34:528:1827:34
8:52
+0:26
20M
20.00 mi13:37:302:46:558:2112:03
8:52
0:00
21M
21.00 mi13:47:162:56:418:259:46
9:46
+0:54
35K
21.75 mi13:53:303:02:558:256:14
8:20
-1:26
23M
23.00 mi14:04:303:13:558:2611:00
8:47
+0:27
24M
24.00 mi14:13:193:22:448:278:49
8:49
+0:02
40K
24.85 mi14:20:503:30:158:287:31
8:47
-0:02
25.2M
25.20 mi14:24:113:33:368:293:21
9:43
+0:56
Finish
26.22 mi14:32:483:42:138:298:37
8:27
-1:16

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

7:58 /mi

Average Pace

8:29 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:28

36% of race

Time at Steady Pace

1:01:41

28% of race

Time at Slower Pace

1:20:04

36% of race

Average Pace: 8:29 /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 mi11:15:3224:578:0224:57
8:02
#14253
10K
6.21 mi11:40:1849:438:0024:46
7:58
#14404
15K
9.32 mi12:05:301:14:558:0225:12
8:07
#14645
20K
12.43 mi12:31:531:41:188:0926:23
8:30
#15266
Half
13.11 mi12:37:261:46:518:095:33
8:08
#15260
25K
15.53 mi12:57:532:07:188:1220:27
8:26
#15322
30K
18.64 mi13:25:272:34:528:1827:34
8:52
#15540
20M
20.00 mi13:37:302:46:558:2112:03
8:52
#15533
21M
21.00 mi13:47:162:56:418:259:46
9:46
#15623
35K
21.75 mi13:53:303:02:558:256:14
8:20
#15574
23M
23.00 mi14:04:303:13:558:2611:00
8:47
#15505
24M
24.00 mi14:13:193:22:448:278:49
8:49
#15532
40K
24.85 mi14:20:503:30:158:287:31
8:47
#15506
25.2M
25.20 mi14:24:113:33:368:293:21
9:43
#15535
Finish
26.22 mi14:32:483:42:138:298:37
8:27
#15496
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi142534181418115255(Top 57%)4829(Top 42%)4829(Top 99%)
10K6.21 mi3.10 mi14404-1514287-1064287-10614610(Top 55%)4426(Top 39%)4426(Top 91%)
15K9.32 mi3.11 mi14645-2414443-1564443-15615255(Top 57%)4829(Top 42%)4829(Top 99%)
20K12.43 mi3.11 mi15266-6214849-4064849-40616797(Top 63%)5815(Top 51%)5815(Top 119%)
Half13.11 mi0.68 mi15260+64851-24851-215394(Top 58%)4928(Top 43%)4928(Top 101%)
25K15.53 mi2.42 mi15322-624912-614912-6115814(Top 59%)5324(Top 47%)5324(Top 109%)
30K18.64 mi3.11 mi15540-2185092-1805092-18016503(Top 62%)5789(Top 51%)5789(Top 119%)
20M20.00 mi1.36 mi15533+75109-175109-1715830(Top 59%)5466(Top 48%)5466(Top 112%)
21M21.00 mi1.00 mi15623-905193-845193-8417124(Top 64%)6259(Top 55%)6259(Top 128%)
35K21.75 mi0.75 mi15574+495182+115182+1114337(Top 54%)4754(Top 42%)4754(Top 97%)
23M23.00 mi1.25 mi15505+695166+165166+1614932(Top 56%)5132(Top 45%)5132(Top 105%)
24M24.00 mi1.00 mi15532-275200-345200-3416303(Top 61%)5966(Top 52%)5966(Top 122%)
40K24.85 mi0.85 mi15506+265196+45196+415064(Top 57%)5333(Top 47%)5333(Top 109%)
25.2M25.20 mi0.35 mi15535-295213-175213-1716212(Top 61%)5979(Top 52%)5979(Top 122%)
Finish26.22 mi1.02 mi15496+395205+85205+815155(Top 57%)5344(Top 47%)5344(Top 109%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

15255

Females

4829

F18-39

4829

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

14610

Females

4426

F18-39

4426

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

15255

Females

4829

F18-39

4829

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

16797

Females

5815

F18-39

5815

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

15394

Females

4928

F18-39

4928

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

15814

Females

5324

F18-39

5324

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

16503

Females

5789

F18-39

5789

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

15830

Females

5466

F18-39

5466

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

17124

Females

6259

F18-39

6259

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

14337

Females

4754

F18-39

4754

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

14932

Females

5132

F18-39

5132

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16303

Females

5966

F18-39

5966

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15064

Females

5333

F18-39

5333

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16212

Females

5979

F18-39

5979

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15155

Females

5344

F18-39

5344

Passing Analysis

Category:
Athletes Passed
1234
Passed By
2477
Net Change
-1243
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14253
5K → 10K224375-151#14253#14404
10K → 15K121362-241#14404#14645
15K → 20K53674-621#14645#15266
20K → Half3933+6#15266#15260
Half → 25K113175-62#15260#15322
25K → 30K116334-218#15322#15540
30K → 20M9386+7#15540#15533
20M → 21M57147-90#15533#15623
21M → 35K6819+49#15623#15574
35K → 23M12455+69#15574#15505
23M → 24M5279-27#15505#15532
24M → 40K6438+26#15532#15506
40K → 25.2M2352-29#15506#15535
25.2M → Finish8748+39#15535#15496
TOTALS12342477-1243
📊

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