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BOSTON MARATHON 2023

Lisa Aylstock

Bib: 21260•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 45%
Masters (Masters Women)
#0 / 6539
Top 34%
Division (F50-54)
#0 / 1207
Top 26%
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
8:27/mi
26:14
↑ 97↓ 3451.5%
10K· 6.21 mi
8:21/mi
52:12
↑ 79↓ 1380.4%
15K· 9.32 mi
8:24/mi
1:18:17
↑ 67↓ 78
20K· 12.43 mi
8:24/mi
1:44:24
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:50:06
↑ 19↓ 370.5%
25K· 15.53 mi
8:28/mi
2:10:38
↑ 66↓ 880.2%
30K· 18.64 mi
8:44/mi
2:37:47
↑ 181↓ 1480.2%
20M
8:44/mi
2:49:39
↑ 64↓ 500.2%
21M
8:55/mi
2:58:34
↑ 106↓ 241.6%
35K· 21.75 mi
8:20/mi
3:04:48
↑ 17↓ 861.7%
23M
8:28/mi
3:15:24
↑ 23↓ 630.6%
24M
8:15/mi
3:23:39
↓ 821.3%
40K· 24.85 mi
8:22/mi
3:30:48
↓ 200.3%
25.2M
8:54/mi
3:33:52
↑ 13↓ 160.2%
Finish· 26.22 mi
8:04/mi
3:42:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:06
Pace8:24 /mi
2nd Half
Distance13.11 mi
Time1:51:59
Pace8:33 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:5726:148:2726:14
8:27
-
10K
6.21 mi11:45:5552:128:2425:58
8:21
-0:06
15K
9.32 mi12:12:001:18:178:2426:05
8:24
+0:03
20K
12.43 mi12:38:071:44:248:2426:07
8:24
0:00
Half
13.11 mi12:43:491:50:068:245:42
8:21
-0:03
25K
15.53 mi13:04:212:10:388:2520:32
8:28
+0:07
30K
18.64 mi13:31:302:37:478:2827:09
8:44
+0:16
20M
20.00 mi13:43:222:49:398:2911:52
8:44
0:00
21M
21.00 mi13:52:172:58:348:308:55
8:55
+0:11
35K
21.75 mi13:58:313:04:488:306:14
8:20
-0:35
23M
23.00 mi14:09:073:15:248:3010:36
8:28
+0:08
24M
24.00 mi14:17:223:23:398:298:15
8:15
-0:13
40K
24.85 mi14:24:313:30:488:297:09
8:22
+0:07
25.2M
25.20 mi14:27:353:33:528:293:04
8:54
+0:32
Finish
26.22 mi14:35:483:42:058:298:13
8:04
-0:50

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

8:04 /mi

Average Pace

8:29 /mi

Slowest Pace

8:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:30:06

95% of race

Time at Steady Pace

11:59

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:28 /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 mi11:19:5726:148:2726:14
8:27
#17180
10K
6.21 mi11:45:5552:128:2425:58
8:21
#17218
15K
9.32 mi12:12:001:18:178:2426:05
8:24
#17189
20K
12.43 mi12:38:071:44:248:2426:07
8:24
#16951
Half
13.11 mi12:43:491:50:068:245:42
8:21
#16939
25K
15.53 mi13:04:212:10:388:2520:32
8:28
#16799
30K
18.64 mi13:31:302:37:478:2827:09
8:44
#16558
20M
20.00 mi13:43:222:49:398:2911:52
8:44
#16422
21M
21.00 mi13:52:172:58:348:308:55
8:55
#16216
35K
21.75 mi13:58:313:04:488:306:14
8:20
#16120
23M
23.00 mi14:09:073:15:248:3010:36
8:28
#15931
24M
24.00 mi14:17:223:23:398:298:15
8:15
#15784
40K
24.85 mi14:24:313:30:488:297:09
8:22
#15653
25.2M
25.20 mi14:27:353:33:528:293:04
8:54
#15601
Finish
26.22 mi14:35:483:42:058:298:13
8:04
#15467
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi171806050605017119(Top 64%)5995(Top 52%)5995(Top 497%)
10K6.21 mi3.10 mi17218-386067-176067-1717295(Top 65%)6055(Top 53%)6055(Top 502%)
15K9.32 mi3.11 mi17189+296025+426025+4217119(Top 64%)5995(Top 52%)5995(Top 497%)
20K12.43 mi3.11 mi16951+2385898+1275898+12716285(Top 61%)5521(Top 48%)5521(Top 457%)
Half13.11 mi0.68 mi16939+125890+85890+816856(Top 63%)5802(Top 51%)5802(Top 481%)
25K15.53 mi2.42 mi16799+1405834+565834+5616016(Top 60%)5450(Top 48%)5450(Top 452%)
30K18.64 mi3.11 mi16558+2415717+1175717+11715721(Top 59%)5336(Top 47%)5336(Top 442%)
20M20.00 mi1.36 mi16422+1365659+585659+5815077(Top 57%)5044(Top 44%)5044(Top 418%)
21M21.00 mi1.00 mi16216+2065547+1125547+11212973(Top 49%)3937(Top 34%)3937(Top 326%)
35K21.75 mi0.75 mi16120+965509+385509+3814335(Top 54%)4752(Top 42%)4752(Top 394%)
23M23.00 mi1.25 mi15931+1895422+875422+8713037(Top 49%)4100(Top 36%)4100(Top 340%)
24M24.00 mi1.00 mi15784+1475350+725350+7212986(Top 49%)4138(Top 36%)4138(Top 343%)
40K24.85 mi0.85 mi15653+1315276+745276+7412523(Top 47%)3964(Top 35%)3964(Top 328%)
25.2M25.20 mi0.35 mi15601+525254+225254+2212029(Top 45%)3767(Top 33%)3767(Top 312%)
Finish26.22 mi1.02 mi15467+1345186+685186+6812600(Top 47%)4017(Top 35%)4017(Top 333%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

17119

Females

5995

F50-54

5995

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

17295

Females

6055

F50-54

6055

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

17119

Females

5995

F50-54

5995

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

16285

Females

5521

F50-54

5521

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16856

Females

5802

F50-54

5802

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

16016

Females

5450

F50-54

5450

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

15721

Females

5336

F50-54

5336

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

15077

Females

5044

F50-54

5044

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

12973

Females

3937

F50-54

3937

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

14335

Females

4752

F50-54

4752

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

13037

Females

4100

F50-54

4100

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

12986

Females

4138

F50-54

4138

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12523

Females

3964

F50-54

3964

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12029

Females

3767

F50-54

3767

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

12600

Females

4017

F50-54

4017

Passing Analysis

Category:
Athletes Passed
2524
Passed By
811
Net Change
+1713
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17180
5K → 10K299337-38#17180#17218
10K → 15K199170+29#17218#17189
15K → 20K31274+238#17189#16951
20K → Half3624+12#16951#16939
Half → 25K19050+140#16939#16799
25K → 30K30059+241#16799#16558
30K → 20M15923+136#16558#16422
20M → 21M2159+206#16422#16216
21M → 35K1048+96#16216#16120
35K → 23M20415+189#16120#15931
23M → 24M16215+147#15931#15784
24M → 40K1387+131#15784#15653
40K → 25.2M564+52#15653#15601
25.2M → Finish15016+134#15601#15467
TOTALS2524811+1713
📊

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