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BOSTON MARATHON 2023

Janet Noftall

Bib: 20750•F

NS

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 40%
Division (F45-49)
#0 / 1817
Top 48%
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
8:08/mi
25:16
↑ 97↓ 3451.5%
10K· 6.21 mi
8:09/mi
50:34
↑ 79↓ 1380.4%
15K· 9.32 mi
8:09/mi
1:15:53
↑ 67↓ 78
20K· 12.43 mi
8:12/mi
1:41:22
↑ 106↓ 860.1%
Half· 13.11 mi
8:12/mi
1:46:58
↑ 19↓ 370.5%
25K· 15.53 mi
8:23/mi
2:07:17
↑ 66↓ 880.2%
30K· 18.64 mi
8:49/mi
2:34:42
↑ 181↓ 1480.2%
20M
9:05/mi
2:47:02
↑ 64↓ 500.2%
21M
10:00/mi
2:57:02
↑ 106↓ 241.6%
35K· 21.75 mi
8:45/mi
3:03:35
↑ 17↓ 861.7%
23M
9:20/mi
3:15:16
↑ 23↓ 630.6%
24M
8:57/mi
3:24:13
↓ 821.3%
40K· 24.85 mi
9:28/mi
3:32:19
↓ 200.3%
25.2M
10:41/mi
3:36:00
↑ 13↓ 160.2%
Finish· 26.22 mi
9:58/mi
3:46:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:58
Pace8:10 /mi
2nd Half
Distance13.11 mi
Time1:59:11
Pace9:06 /mi
📊Positive Split: 11.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0725:168:0825:16
8:08
-
10K
6.21 mi11:43:2550:348:0825:18
8:09
+0:01
15K
9.32 mi12:08:441:15:538:0825:19
8:09
0:00
20K
12.43 mi12:34:131:41:228:0925:29
8:12
+0:03
Half
13.11 mi12:39:491:46:588:105:36
8:12
0:00
25K
15.53 mi13:00:082:07:178:1220:19
8:23
+0:11
30K
18.64 mi13:27:332:34:428:1827:25
8:49
+0:26
20M
20.00 mi13:39:532:47:028:2112:20
9:05
+0:16
21M
21.00 mi13:49:532:57:028:2610:00
10:00
+0:55
35K
21.75 mi13:56:263:03:358:266:33
8:45
-1:15
23M
23.00 mi14:08:073:15:168:2911:41
9:20
+0:35
24M
24.00 mi14:17:043:24:138:318:57
8:57
-0:23
40K
24.85 mi14:25:103:32:198:338:06
9:28
+0:31
25.2M
25.20 mi14:28:513:36:008:343:41
10:41
+1:13
Finish
26.22 mi14:39:003:46:098:3810:09
9:58
-0:43

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

8:08 /mi

Average Pace

8:38 /mi

Slowest Pace

10:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:17

56% of race

Time at Steady Pace

55:15

24% of race

Time at Slower Pace

43:37

19% of race

Average Pace: 8:38 /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 mi11:18:0725:168:0825:16
8:08
#14971
10K
6.21 mi11:43:2550:348:0825:18
8:09
#15379
15K
9.32 mi12:08:441:15:538:0825:19
8:09
#15437
20K
12.43 mi12:34:131:41:228:0925:29
8:12
#15303
Half
13.11 mi12:39:491:46:588:105:36
8:12
#15304
25K
15.53 mi13:00:082:07:178:1220:19
8:23
#15317
30K
18.64 mi13:27:332:34:428:1827:25
8:49
#15469
20M
20.00 mi13:39:532:47:028:2112:20
9:05
#15574
21M
21.00 mi13:49:532:57:028:2610:00
10:00
#15729
35K
21.75 mi13:56:263:03:358:266:33
8:45
#15756
23M
23.00 mi14:08:073:15:168:2911:41
9:20
#15885
24M
24.00 mi14:17:043:24:138:318:57
8:57
#15944
40K
24.85 mi14:25:103:32:198:338:06
9:28
#16036
25.2M
25.20 mi14:28:513:36:008:343:41
10:41
#16117
Finish
26.22 mi14:39:003:46:098:3810:09
9:58
#16414
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi149714624462415509(Top 58%)4990(Top 44%)4990(Top 275%)
10K6.21 mi3.10 mi15379-4084891-2674891-26715860(Top 60%)5183(Top 45%)5183(Top 285%)
15K9.32 mi3.11 mi15437-584937-464937-4615509(Top 58%)4990(Top 44%)4990(Top 275%)
20K12.43 mi3.11 mi15303+1344875+624875+6214990(Top 56%)4714(Top 41%)4714(Top 259%)
Half13.11 mi0.68 mi15304-14881-64881-615931(Top 60%)5263(Top 46%)5263(Top 290%)
25K15.53 mi2.42 mi15317-134910-294910-2915473(Top 58%)5128(Top 45%)5128(Top 282%)
30K18.64 mi3.11 mi15469-1525055-1455055-14516219(Top 61%)5624(Top 49%)5624(Top 310%)
20M20.00 mi1.36 mi15574-1055136-815136-8116935(Top 64%)6115(Top 54%)6115(Top 337%)
21M21.00 mi1.00 mi15729-1555261-1255261-12518029(Top 68%)6777(Top 59%)6777(Top 373%)
35K21.75 mi0.75 mi15756-275287-265287-2616734(Top 63%)6122(Top 54%)6122(Top 337%)
23M23.00 mi1.25 mi15885-1295391-1045391-10417669(Top 66%)6667(Top 58%)6667(Top 367%)
24M24.00 mi1.00 mi15944-595440-495440-4917007(Top 64%)6357(Top 56%)6357(Top 350%)
40K24.85 mi0.85 mi16036-925499-595499-5918252(Top 69%)7072(Top 62%)7072(Top 389%)
25.2M25.20 mi0.35 mi16117-815541-425541-4219655(Top 74%)7863(Top 69%)7863(Top 433%)
Finish26.22 mi1.02 mi16414-2975731-1905731-19021657(Top 81%)8935(Top 78%)8935(Top 492%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

15509

Females

4990

F45-49

4990

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

15860

Females

5183

F45-49

5183

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

15509

Females

4990

F45-49

4990

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

14990

Females

4714

F45-49

4714

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

15931

Females

5263

F45-49

5263

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

15473

Females

5128

F45-49

5128

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

16219

Females

5624

F45-49

5624

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

16935

Females

6115

F45-49

6115

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

18029

Females

6777

F45-49

6777

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16734

Females

6122

F45-49

6122

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

17669

Females

6667

F45-49

6667

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

17007

Females

6357

F45-49

6357

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

18252

Females

7072

F45-49

7072

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19655

Females

7863

F45-49

7863

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2story building
+22ft-21ft

Overall

21657

Females

8935

F45-49

8935

Passing Analysis

Category:
Athletes Passed
1121
Passed By
2564
Net Change
-1443
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14971
5K → 10K147555-408#14971#15379
10K → 15K151209-58#15379#15437
15K → 20K234100+134#15437#15303
20K → Half3435-1#15303#15304
Half → 25K127140-13#15304#15317
25K → 30K137289-152#15317#15469
30K → 20M55160-105#15469#15574
20M → 21M45200-155#15574#15729
21M → 35K3764-27#15729#15756
35K → 23M41170-129#15756#15885
23M → 24M58117-59#15885#15944
24M → 40K32124-92#15944#16036
40K → 25.2M1192-81#16036#16117
25.2M → Finish12309-297#16117#16414
TOTALS11212564-1443
📊

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