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BOSTON MARATHON 2023

Margaret Kuhn

MD

Bib: 23431 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
Top 19%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:38/mi
26:48
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:40/mi
53:43
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:30/mi
1:20:06
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:44/mi
1:47:13
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:34/mi
1:53:04
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:47/mi
2:14:22
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:09/mi
2:42:47
↑ 181↓ 1480.2%
138 ft elev
20M
9:24/mi
2:55:33
↑ 64↓ 500.2%
148 ft elev
21M
10:12/mi
3:05:45
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:52/mi
3:12:23
↑ 17↓ 861.7%
156 ft elev
23M
9:38/mi
3:24:27
↑ 23↓ 630.6%
116 ft elev
24M
9:13/mi
3:33:40
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:23/mi
3:41:41
↓ 200.3%
20 ft elev
25.2M
10:18/mi
3:45:14
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:59/mi
3:54:23
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:53:048:37 /mi⚡ faster
2nd Half
2:01:199:15 /mi+7.3%
Positive split — 7.3% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:1726:488:3826:48
8:38
-
10K
6.21 mi11:50:1253:438:3926:55
8:40
+0:02
15K
9.32 mi12:16:351:20:068:3626:23
8:30
-0:10
20K
12.43 mi12:43:421:47:138:3827:07
8:44
+0:14
Half
13.11 mi12:49:331:53:048:375:51
8:34
-0:10
25K
15.53 mi13:10:512:14:228:3921:18
8:47
+0:13
30K
18.64 mi13:39:162:42:478:4428:25
9:09
+0:22
20M
20.00 mi13:52:022:55:338:4712:46
9:24
+0:15
21M
21.00 mi14:02:143:05:458:5110:12
10:12
+0:48
35K
21.75 mi14:08:523:12:238:516:38
8:52
-1:20
23M
23.00 mi14:20:563:24:278:5312:04
9:38
+0:46
24M
24.00 mi14:30:093:33:408:549:13
9:13
-0:25
40K
24.85 mi14:38:103:41:418:558:01
9:23
+0:10
25.2M
25.20 mi14:41:433:45:148:563:33
10:18
+0:55
Finish
26.22 mi14:50:523:54:238:579:09
8:59
-1:19

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

8:30 /mi

Average Pace

8:57 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

1:25:57

37% of race

Time at Steady Pace

1:41:50

43% of race

Time at Slower Pace

46:36

20% of race

Average Pace: 8:56 /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 mi11:23:1726:488:3826:48
8:38
#18401
10K
6.21 mi11:50:1253:438:3926:55
8:40
#18776
15K
9.32 mi12:16:351:20:068:3626:23
8:30
#18454
20K
12.43 mi12:43:421:47:138:3827:07
8:44
#18376
Half
13.11 mi12:49:331:53:048:375:51
8:34
#18354
25K
15.53 mi13:10:512:14:228:3921:18
8:47
#18266
30K
18.64 mi13:39:162:42:478:4428:25
9:09
#18176
20M
20.00 mi13:52:022:55:338:4712:46
9:24
#18195
21M
21.00 mi14:02:143:05:458:5110:12
10:12
#18260
35K
21.75 mi14:08:523:12:238:516:38
8:52
#18207
23M
23.00 mi14:20:563:24:278:5312:04
9:38
#18256
24M
24.00 mi14:30:093:33:408:549:13
9:13
#18255
40K
24.85 mi14:38:103:41:418:558:01
9:23
#18256
25.2M
25.20 mi14:41:433:45:148:563:33
10:18
#18263
Finish
26.22 mi14:50:523:54:238:579:09
8:59
#18244
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi18401681368131777163776377
10K6.21 mi3.10 mi18776-3756995-1826995-1821922272137213
15K9.32 mi3.11 mi18454+3226784+2116784+2111777163776377
20K12.43 mi3.11 mi18376+786736+486736+481830266756675
Half13.11 mi0.68 mi18354+226718+186718+181823566306630
25K15.53 mi2.42 mi18266+886689+296689+291788965116511
30K18.64 mi3.11 mi18176+906676+136676+131791866036603
20M20.00 mi1.36 mi18195-196696-206696-201844769956995
21M21.00 mi1.00 mi18260-656756-606756-601872571807180
35K21.75 mi0.75 mi18207+536730+266730+261732064606460
23M23.00 mi1.25 mi18256-496762-326762-321887173347334
24M24.00 mi1.00 mi18255+16775-136775-131813469706970
40K24.85 mi0.85 mi18256-16790-156790-151787368816881
25.2M25.20 mi0.35 mi18263-76796-66796-61848272157215
Finish26.22 mi1.02 mi18244+196791+56791+51790168636863

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17771

Females

6377

F60-64

6377

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19222

Females

7213

F60-64

7213

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17771

Females

6377

F60-64

6377

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

18302

Females

6675

F60-64

6675

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

18235

Females

6630

F60-64

6630

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17889

Females

6511

F60-64

6511

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

17918

Females

6603

F60-64

6603

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18447

Females

6995

F60-64

6995

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

18725

Females

7180

F60-64

7180

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

17320

Females

6460

F60-64

6460

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

18871

Females

7334

F60-64

7334

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

18134

Females

6970

F60-64

6970

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17873

Females

6881

F60-64

6881

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18482

Females

7215

F60-64

7215

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

17901

Females

6863

F60-64

6863

Passing Analysis

Category:
Athletes Passed
1662
Passed By
1505
Net Change
+157
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18401
5K → 10K172547-375#18401#18776
10K → 15K38664+322#18776#18454
15K → 20K197119+78#18454#18376
20K → Half4422+22#18376#18354
Half → 25K16476+88#18354#18266
25K → 30K230140+90#18266#18176
30K → 20M7493-19#18176#18195
20M → 21M72137-65#18195#18260
21M → 35K7926+53#18260#18207
35K → 23M60109-49#18207#18256
23M → 24M5049+1#18256#18255
24M → 40K5758-1#18255#18256
40K → 25.2M2330-7#18256#18263
25.2M → Finish5435+19#18263#18244
TOTALS16621505+157

Passing Charts

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