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BOSTON MARATHON 2023

Catharina Armstrong

Bib: 22977•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:54
Rank: #20371
Start → 5K
27:54 | 8:59/mi
10K· 6.21 mi
55:49
Rank: #20583 (-212)
5K → 10K
27:55 | 8:59/mi
15K· 9.32 mi
1:23:53
Rank: #20575 (+8)
10K → 15K
28:04 | 9:02/mi
20K· 12.43 mi
1:54:42
Rank: #21284 (-709)
15K → 20K
30:49 | 9:55/mi
Half· 13.11 mi
2:01:34
Rank: #21418 (-134)
20K → Half
6:52 | 10:04/mi
25K· 15.53 mi
2:27:22
Rank: #21855 (-437)
Half → 25K
25:48 | 10:38/mi
30K· 18.64 mi
3:03:00
Rank: #22373 (-518)
25K → 30K
35:38 | 11:28/mi
20M
3:18:48
Rank: #22495 (-122)
30K → 20M
15:48 | 11:38/mi
21M
3:31:22
Rank: #22577 (-82)
20M → 21M
12:34 | 12:34/mi
35K· 21.75 mi
3:40:07
Rank: #22675 (-98)
21M → 35K
8:45 | 11:42/mi
23M
3:56:06
Rank: #22849 (-174)
35K → 23M
15:59 | 12:46/mi
24M
4:08:18
Rank: #22951 (-102)
23M → 24M
12:12 | 12:12/mi
40K· 24.85 mi
4:18:59
Rank: #23032 (-81)
24M → 40K
10:41 | 12:30/mi
25.2M
4:23:39
Rank: #23076 (-44)
40K → 25.2M
4:40 | 13:32/mi
Finish· 26.22 mi
4:34:50
Rank: #23100 (-24)
25.2M → Finish
11:11 | 10:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:34
Pace9:16 /mi
2nd Half
Distance13.11 mi
Time2:33:16
Pace11:41 /mi
📊Positive Split: 26.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:1027:548:5927:54
8:59
-
10K
6.21 mi11:56:0555:498:5927:55
8:59
0:00
15K
9.32 mi12:24:091:23:539:0028:04
9:02
+0:03
20K
12.43 mi12:54:581:54:429:1430:49
9:55
+0:53
Half
13.11 mi13:01:502:01:349:166:52
10:04
+0:09
25K
15.53 mi13:27:382:27:229:2925:48
10:38
+0:34
30K
18.64 mi14:03:163:03:009:4935:38
11:28
+0:50
20M
20.00 mi14:19:043:18:489:5615:48
11:38
+0:10
21M
21.00 mi14:31:383:31:2210:0412:34
12:34
+0:56
35K
21.75 mi14:40:233:40:0710:078:45
11:42
-0:52
23M
23.00 mi14:56:223:56:0610:1615:59
12:46
+1:04
24M
24.00 mi15:08:344:08:1810:2112:12
12:12
-0:34
40K
24.85 mi15:19:154:18:5910:2510:41
12:30
+0:18
25.2M
25.20 mi15:23:554:23:3910:284:40
13:32
+1:02
Finish
26.22 mi15:35:064:34:5010:2911:11
10:58
-2:34

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

8:59 /mi

Average Pace

10:29 /mi

Slowest Pace

13:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:27:22

54% of race

Time at Steady Pace

1:11:22

26% of race

Time at Slower Pace

56:06

20% of race

Average Pace: 10:29 /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 mi11:28:1027:548:5927:54
8:59
#20371
10K
6.21 mi11:56:0555:498:5927:55
8:59
#20583
15K
9.32 mi12:24:091:23:539:0028:04
9:02
#20575
20K
12.43 mi12:54:581:54:429:1430:49
9:55
#21284
Half
13.11 mi13:01:502:01:349:166:52
10:04
#21418
25K
15.53 mi13:27:382:27:229:2925:48
10:38
#21855
30K
18.64 mi14:03:163:03:009:4935:38
11:28
#22373
20M
20.00 mi14:19:043:18:489:5615:48
11:38
#22495
21M
21.00 mi14:31:383:31:2210:0412:34
12:34
#22577
35K
21.75 mi14:40:233:40:0710:078:45
11:42
#22675
23M
23.00 mi14:56:223:56:0610:1615:59
12:46
#22849
24M
24.00 mi15:08:344:08:1810:2112:12
12:12
#22951
40K
24.85 mi15:19:154:18:5910:2510:41
12:30
#23032
25.2M
25.20 mi15:23:554:23:3910:284:40
13:32
#23076
Finish
26.22 mi15:35:064:34:5010:2911:11
10:58
#23100
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi203718041804120657(Top 78%)8047(Top 70%)8047(Top 667%)
10K6.21 mi3.10 mi20583-2128081-408081-4020829(Top 78%)8173(Top 72%)8173(Top 677%)
15K9.32 mi3.11 mi20575+88062+198062+1920657(Top 78%)8047(Top 70%)8047(Top 667%)
20K12.43 mi3.11 mi21284-7098425-3638425-36322712(Top 85%)9197(Top 81%)9197(Top 762%)
Half13.11 mi0.68 mi21418-1348502-778502-7723415(Top 88%)9582(Top 84%)9582(Top 794%)
25K15.53 mi2.42 mi21855-4378744-2428744-24223424(Top 88%)9626(Top 84%)9626(Top 798%)
30K18.64 mi3.11 mi22373-5189050-3069050-30623813(Top 89%)9906(Top 87%)9906(Top 821%)
20M20.00 mi1.36 mi22495-1229133-839133-8323720(Top 89%)9912(Top 87%)9912(Top 821%)
21M21.00 mi1.00 mi22577-829183-509183-5023542(Top 88%)9833(Top 86%)9833(Top 815%)
35K21.75 mi0.75 mi22675-989248-659248-6524355(Top 91%)10311(Top 90%)10311(Top 854%)
23M23.00 mi1.25 mi22849-1749350-1029350-10224864(Top 93%)10569(Top 93%)10569(Top 876%)
24M24.00 mi1.00 mi22951-1029414-649414-6424752(Top 93%)10558(Top 92%)10558(Top 875%)
40K24.85 mi0.85 mi23032-819463-499463-4924441(Top 92%)10410(Top 91%)10410(Top 862%)
25.2M25.20 mi0.35 mi23076-449484-219484-2124561(Top 92%)10461(Top 92%)10461(Top 867%)
Finish26.22 mi1.02 mi23100-249502-189502-1823926(Top 90%)10122(Top 89%)10122(Top 839%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

20657

Females

8047

F50-54

8047

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

20829

Females

8173

F50-54

8173

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

20657

Females

8047

F50-54

8047

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

22712

Females

9197

F50-54

9197

20K→Half

12.4 - 13.1 mi

Top 88%
×2stories
+19ft-37ft

Overall

23415

Females

9582

F50-54

9582

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

23424

Females

9626

F50-54

9626

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

23813

Females

9906

F50-54

9906

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

23720

Females

9912

F50-54

9912

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

23542

Females

9833

F50-54

9833

21M→35K

21.0 - 21.8 mi

Top 91%
×7stories
+17ft-86ft

Overall

24355

Females

10311

F50-54

10311

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

24864

Females

10569

F50-54

10569

23M→24M

23.0 - 24.0 mi

Top 93%
×6stories
+12ft-82ft

Overall

24752

Females

10558

F50-54

10558

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

24441

Females

10410

F50-54

10410

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

24561

Females

10461

F50-54

10461

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2stories
+22ft-21ft

Overall

23926

Females

10122

F50-54

10122

Passing Analysis

Category:
Athletes Passed
607
Passed By
3336
Net Change
-2729
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20371
5K → 10K198410-212#20371#20583
10K → 15K179171+8#20583#20575
15K → 20K24733-709#20575#21284
20K → Half4138-134#21284#21418
Half → 25K18455-437#21418#21855
25K → 30K35553-518#21855#22373
30K → 20M22144-122#22373#22495
20M → 21M30112-82#22495#22577
21M → 35K17115-98#22577#22675
35K → 23M13187-174#22675#22849
23M → 24M16118-102#22849#22951
24M → 40K20101-81#22951#23032
40K → 25.2M448-44#23032#23076
25.2M → Finish2751-24#23076#23100
TOTALS6073336-2729
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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