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BOSTON MARATHON 2023

Nicole Williamson

Bib: 19433•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
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
8:23/mi
26:02
↑ 97↓ 3451.5%
10K· 6.21 mi
8:07/mi
51:14
↑ 79↓ 1380.4%
15K· 9.32 mi
8:14/mi
1:16:49
↑ 67↓ 78
20K· 12.43 mi
8:25/mi
1:42:58
↑ 106↓ 860.1%
Half· 13.11 mi
8:23/mi
1:48:41
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:10:01
↑ 66↓ 880.2%
30K· 18.64 mi
9:17/mi
2:38:53
↑ 181↓ 1480.2%
20M
9:29/mi
2:51:46
↑ 64↓ 500.2%
21M
10:26/mi
3:02:12
↑ 106↓ 241.6%
35K· 21.75 mi
9:00/mi
3:08:56
↑ 17↓ 861.7%
23M
9:31/mi
3:20:51
↑ 23↓ 630.6%
24M
9:17/mi
3:30:08
↓ 821.3%
40K· 24.85 mi
9:19/mi
3:38:06
↓ 200.3%
25.2M
10:44/mi
3:41:48
↑ 13↓ 160.2%
Finish· 26.22 mi
9:08/mi
3:51:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:41
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time2:02:25
Pace9:20 /mi
📊Positive Split: 12.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4026:028:2326:02
8:23
-
10K
6.21 mi11:45:5251:148:1525:12
8:07
-0:16
15K
9.32 mi12:11:271:16:498:1425:35
8:14
+0:07
20K
12.43 mi12:37:361:42:588:1726:09
8:25
+0:11
Half
13.11 mi12:43:191:48:418:175:43
8:23
-0:02
25K
15.53 mi13:04:392:10:018:2221:20
8:48
+0:25
30K
18.64 mi13:33:312:38:538:3128:52
9:17
+0:29
20M
20.00 mi13:46:242:51:468:3512:53
9:29
+0:12
21M
21.00 mi13:56:503:02:128:4110:26
10:26
+0:57
35K
21.75 mi14:03:343:08:568:416:44
9:00
-1:26
23M
23.00 mi14:15:293:20:518:4411:55
9:31
+0:31
24M
24.00 mi14:24:463:30:088:459:17
9:17
-0:14
40K
24.85 mi14:32:443:38:068:467:58
9:19
+0:02
25.2M
25.20 mi14:36:263:41:488:483:42
10:44
+1:25
Finish
26.22 mi14:45:443:51:068:499:18
9:08
-1:36

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

8:07 /mi

Average Pace

8:49 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:41

47% of race

Time at Steady Pace

1:36:22

42% of race

Time at Slower Pace

26:03

11% of race

Average Pace: 8:49 /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 mi11:20:4026:028:2326:02
8:23
#16745
10K
6.21 mi11:45:5251:148:1525:12
8:07
#16163
15K
9.32 mi12:11:271:16:498:1425:35
8:14
#16131
20K
12.43 mi12:37:361:42:588:1726:09
8:25
#16158
Half
13.11 mi12:43:191:48:418:175:43
8:23
#16218
25K
15.53 mi13:04:392:10:018:2221:20
8:48
#16540
30K
18.64 mi13:33:312:38:538:3128:52
9:17
#16914
20M
20.00 mi13:46:242:51:468:3512:53
9:29
#17061
21M
21.00 mi13:56:503:02:128:4110:26
10:26
#17251
35K
21.75 mi14:03:343:08:568:416:44
9:00
#17266
23M
23.00 mi14:15:293:20:518:4411:55
9:31
#17365
24M
24.00 mi14:24:463:30:088:459:17
9:17
#17430
40K
24.85 mi14:32:443:38:068:467:58
9:19
#17451
25.2M
25.20 mi14:36:263:41:488:483:42
10:44
#17526
Finish
26.22 mi14:45:443:51:068:499:18
9:08
#17586
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi167455760576016120(Top 61%)5366(Top 47%)5366(Top 110%)
10K6.21 mi3.10 mi16163+5825375+3855375+38515607(Top 59%)5024(Top 44%)5024(Top 103%)
15K9.32 mi3.11 mi16131+325370+55370+516120(Top 61%)5366(Top 47%)5366(Top 110%)
20K12.43 mi3.11 mi16158-275400-305400-3016365(Top 61%)5570(Top 49%)5570(Top 114%)
Half13.11 mi0.68 mi16218-605441-415441-4117069(Top 64%)5948(Top 52%)5948(Top 122%)
25K15.53 mi2.42 mi16540-3225661-2205661-22017953(Top 67%)6532(Top 57%)6532(Top 134%)
30K18.64 mi3.11 mi16914-3745911-2505911-25018591(Top 70%)6965(Top 61%)6965(Top 143%)
20M20.00 mi1.36 mi17061-1476006-956006-9518795(Top 71%)7187(Top 63%)7187(Top 147%)
21M21.00 mi1.00 mi17251-1906144-1386144-13819376(Top 73%)7560(Top 66%)7560(Top 155%)
35K21.75 mi0.75 mi17266-156162-186162-1817926(Top 67%)6794(Top 59%)6794(Top 139%)
23M23.00 mi1.25 mi17365-996237-756237-7518404(Top 69%)7076(Top 62%)7076(Top 145%)
24M24.00 mi1.00 mi17430-656285-486285-4818404(Top 69%)7111(Top 62%)7111(Top 146%)
40K24.85 mi0.85 mi17451-216315-306315-3017618(Top 66%)6748(Top 59%)6748(Top 138%)
25.2M25.20 mi0.35 mi17526-756366-516366-5119801(Top 74%)7942(Top 70%)7942(Top 163%)
Finish26.22 mi1.02 mi17586-606409-436409-4318581(Top 70%)7211(Top 63%)7211(Top 148%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

16120

Females

5366

F18-39

5366

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

15607

Females

5024

F18-39

5024

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

16120

Females

5366

F18-39

5366

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16365

Females

5570

F18-39

5570

20K→Half

12.4 - 13.1 mi

Top 64%
×2story building
+19ft-37ft

Overall

17069

Females

5948

F18-39

5948

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17953

Females

6532

F18-39

6532

25K→30K

15.5 - 18.6 mi

Top 70%
×9story building
+181ft-148ft

Overall

18591

Females

6965

F18-39

6965

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18795

Females

7187

F18-39

7187

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

19376

Females

7560

F18-39

7560

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

17926

Females

6794

F18-39

6794

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

18404

Females

7076

F18-39

7076

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

18404

Females

7111

F18-39

7111

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17618

Females

6748

F18-39

6748

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19801

Females

7942

F18-39

7942

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

18581

Females

7211

F18-39

7211

Passing Analysis

Category:
Athletes Passed
1552
Passed By
2393
Net Change
-841
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16745
5K → 10K692110+582#16745#16163
10K → 15K210178+32#16163#16131
15K → 20K164191-27#16131#16158
20K → Half2484-60#16158#16218
Half → 25K60382-322#16218#16540
25K → 30K85459-374#16540#16914
30K → 20M37184-147#16914#17061
20M → 21M37227-190#17061#17251
21M → 35K4358-15#17251#17266
35K → 23M52151-99#17266#17365
23M → 24M42107-65#17365#17430
24M → 40K5172-21#17430#17451
40K → 25.2M1489-75#17451#17526
25.2M → Finish41101-60#17526#17586
TOTALS15522393-841
📊

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