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BOSTON MARATHON 2023

Madeleine Nicholson

Bib: 15335•F

CA

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:01/mi
24:53
↑ 97↓ 3451.5%
10K· 6.21 mi
7:52/mi
49:18
↑ 79↓ 1380.4%
15K· 9.32 mi
7:49/mi
1:13:36
↑ 67↓ 78
20K· 12.43 mi
7:51/mi
1:37:59
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:43:16
↑ 19↓ 370.5%
25K· 15.53 mi
7:57/mi
2:02:33
↑ 66↓ 880.2%
30K· 18.64 mi
8:22/mi
2:28:32
↑ 181↓ 1480.2%
20M
9:01/mi
2:40:47
↑ 64↓ 500.2%
21M
9:05/mi
2:49:52
↑ 106↓ 241.6%
35K· 21.75 mi
8:20/mi
2:56:06
↑ 17↓ 861.7%
23M
8:42/mi
3:07:00
↑ 23↓ 630.6%
24M
8:58/mi
3:15:58
↓ 821.3%
40K· 24.85 mi
8:42/mi
3:23:24
↓ 200.3%
25.2M
9:23/mi
3:26:38
↑ 13↓ 160.2%
Finish· 26.22 mi
8:28/mi
3:35:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:16
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:52:00
Pace8:33 /mi
📊Positive Split: 8.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:3424:538:0124:53
8:01
-
10K
6.21 mi11:18:5949:187:5624:25
7:52
-0:09
15K
9.32 mi11:43:171:13:367:5424:18
7:49
-0:03
20K
12.43 mi12:07:401:37:597:5324:23
7:51
+0:02
Half
13.11 mi12:12:571:43:167:535:17
7:45
-0:06
25K
15.53 mi12:32:142:02:337:5319:17
7:57
+0:12
30K
18.64 mi12:58:132:28:327:5825:59
8:22
+0:25
20M
20.00 mi13:10:282:40:478:0212:15
9:01
+0:39
21M
21.00 mi13:19:332:49:528:059:05
9:05
+0:04
35K
21.75 mi13:25:472:56:068:066:14
8:20
-0:45
23M
23.00 mi13:36:413:07:008:0810:54
8:42
+0:22
24M
24.00 mi13:45:393:15:588:108:58
8:58
+0:16
40K
24.85 mi13:53:053:23:248:117:26
8:42
-0:16
25.2M
25.20 mi13:56:193:26:388:123:14
9:23
+0:41
Finish
26.22 mi14:04:573:35:168:138:38
8:28
-0:55

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

7:45 /mi

Average Pace

8:13 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:33

57% of race

Time at Steady Pace

40:51

19% of race

Time at Slower Pace

51:52

24% of race

Average Pace: 8:13 /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 mi10:54:3424:538:0124:53
8:01
#14098
10K
6.21 mi11:18:5949:187:5624:25
7:52
#13857
15K
9.32 mi11:43:171:13:367:5424:18
7:49
#13550
20K
12.43 mi12:07:401:37:597:5324:23
7:51
#13175
Half
13.11 mi12:12:571:43:167:535:17
7:45
#13107
25K
15.53 mi12:32:142:02:337:5319:17
7:57
#12952
30K
18.64 mi12:58:132:28:327:5825:59
8:22
#13050
20M
20.00 mi13:10:282:40:478:0212:15
9:01
#13341
21M
21.00 mi13:19:332:49:528:059:05
9:05
#13365
35K
21.75 mi13:25:472:56:068:066:14
8:20
#13391
23M
23.00 mi13:36:413:07:008:0810:54
8:42
#13446
24M
24.00 mi13:45:393:15:588:108:58
8:58
#13624
40K
24.85 mi13:53:053:23:248:117:26
8:42
#13636
25.2M
25.20 mi13:56:193:26:388:123:14
9:23
#13648
Finish
26.22 mi14:04:573:35:168:138:38
8:28
#13706
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi140984089408912925(Top 49%)3432(Top 30%)3432(Top 70%)
10K6.21 mi3.10 mi13857+2413953+1363953+13613653(Top 51%)3827(Top 34%)3827(Top 78%)
15K9.32 mi3.11 mi13550+3073785+1683785+16812925(Top 49%)3432(Top 30%)3432(Top 70%)
20K12.43 mi3.11 mi13175+3753597+1883597+18812173(Top 46%)3075(Top 27%)3075(Top 63%)
Half13.11 mi0.68 mi13107+683547+503547+5012338(Top 46%)3130(Top 27%)3130(Top 64%)
25K15.53 mi2.42 mi12952+1553477+703477+7012368(Top 46%)3296(Top 29%)3296(Top 67%)
30K18.64 mi3.11 mi13050-983581-1043581-10413442(Top 50%)3999(Top 35%)3999(Top 82%)
20M20.00 mi1.36 mi13341-2913760-1793760-17916621(Top 62%)5923(Top 52%)5923(Top 121%)
21M21.00 mi1.00 mi13365-243791-313791-3113906(Top 52%)4439(Top 39%)4439(Top 91%)
35K21.75 mi0.75 mi13391-263826-353826-3514302(Top 54%)4719(Top 41%)4719(Top 97%)
23M23.00 mi1.25 mi13446-553887-613887-6114421(Top 54%)4858(Top 43%)4858(Top 99%)
24M24.00 mi1.00 mi13624-1784014-1274014-12717079(Top 64%)6396(Top 56%)6396(Top 131%)
40K24.85 mi0.85 mi13636-124044-304044-3014482(Top 54%)5012(Top 44%)5012(Top 103%)
25.2M25.20 mi0.35 mi13648-124055-114055-1114593(Top 55%)5059(Top 44%)5059(Top 104%)
Finish26.22 mi1.02 mi13706-584116-614116-6115247(Top 57%)5390(Top 47%)5390(Top 110%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

12925

Females

3432

F18-39

3432

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

13653

Females

3827

F18-39

3827

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

12925

Females

3432

F18-39

3432

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12173

Females

3075

F18-39

3075

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12338

Females

3130

F18-39

3130

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

12368

Females

3296

F18-39

3296

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

13442

Females

3999

F18-39

3999

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

16621

Females

5923

F18-39

5923

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

13906

Females

4439

F18-39

4439

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

14302

Females

4719

F18-39

4719

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

14421

Females

4858

F18-39

4858

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

17079

Females

6396

F18-39

6396

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

14482

Females

5012

F18-39

5012

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14593

Females

5059

F18-39

5059

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15247

Females

5390

F18-39

5390

Passing Analysis

Category:
Athletes Passed
2074
Passed By
1682
Net Change
+392
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14098
5K → 10K437196+241#14098#13857
10K → 15K36962+307#13857#13550
15K → 20K41742+375#13550#13175
20K → Half768+68#13175#13107
Half → 25K22166+155#13107#12952
25K → 30K157255-98#12952#13050
30K → 20M32323-291#13050#13341
20M → 21M78102-24#13341#13365
21M → 35K4874-26#13365#13391
35K → 23M73128-55#13391#13446
23M → 24M27205-178#13446#13624
24M → 40K6274-12#13624#13636
40K → 25.2M3244-12#13636#13648
25.2M → Finish45103-58#13648#13706
TOTALS20741682+392
📊

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