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BOSTON MARATHON 2023

Lisa Lk Chan

Bib: 12542•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 49%
Gender (Female)
#0 / 11423
Top 33%
Masters (Masters Women)
#0 / 6539
Top 19%
Division (F50-54)
#0 / 1207
Top 12%
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
7:37/mi
23:40
↑ 97↓ 3451.5%
10K· 6.21 mi
7:43/mi
47:40
↑ 79↓ 1380.4%
15K· 9.32 mi
7:33/mi
1:11:06
↑ 67↓ 78
20K· 12.43 mi
7:42/mi
1:35:01
↑ 106↓ 860.1%
Half· 13.11 mi
7:39/mi
1:40:14
↑ 19↓ 370.5%
25K· 15.53 mi
8:03/mi
1:59:46
↑ 66↓ 880.2%
30K· 18.64 mi
8:18/mi
2:25:34
↑ 181↓ 1480.2%
20M
8:22/mi
2:36:56
↑ 64↓ 500.2%
21M
10:03/mi
2:46:59
↑ 106↓ 241.6%
35K· 21.75 mi
8:15/mi
2:53:09
↑ 17↓ 861.7%
23M
8:55/mi
3:04:19
↑ 23↓ 630.6%
24M
8:26/mi
3:12:45
↓ 821.3%
40K· 24.85 mi
10:18/mi
3:21:33
↓ 200.3%
25.2M
8:33/mi
3:24:30
↑ 13↓ 160.2%
Finish· 26.22 mi
8:18/mi
3:32:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:14
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:52:43
Pace8:36 /mi
📊Positive Split: 12.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0923:407:3723:40
7:37
-
10K
6.21 mi11:38:0947:407:4024:00
7:43
+0:06
15K
9.32 mi12:01:351:11:067:3823:26
7:33
-0:10
20K
12.43 mi12:25:301:35:017:3923:55
7:42
+0:09
Half
13.11 mi12:30:431:40:147:395:13
7:39
-0:03
25K
15.53 mi12:50:151:59:467:4319:32
8:03
+0:24
30K
18.64 mi13:16:032:25:347:4925:48
8:18
+0:15
20M
20.00 mi13:27:252:36:567:5111:22
8:22
+0:04
21M
21.00 mi13:37:282:46:597:5710:03
10:03
+1:41
35K
21.75 mi13:43:382:53:097:586:10
8:15
-1:48
23M
23.00 mi13:54:483:04:198:0111:10
8:55
+0:40
24M
24.00 mi14:03:143:12:458:028:26
8:26
-0:29
40K
24.85 mi14:12:023:21:338:078:48
10:18
+1:52
25.2M
25.20 mi14:14:593:24:308:072:57
8:33
-1:45
Finish
26.22 mi14:23:263:32:578:088:27
8:18
-0:15

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

7:33 /mi

Average Pace

8:08 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:14

47% of race

Time at Steady Pace

1:22:42

39% of race

Time at Slower Pace

30:01

14% of race

Average Pace: 8:07 /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 mi11:14:0923:407:3723:40
7:37
#10708
10K
6.21 mi11:38:0947:407:4024:00
7:43
#11547
15K
9.32 mi12:01:351:11:067:3823:26
7:33
#11182
20K
12.43 mi12:25:301:35:017:3923:55
7:42
#11080
Half
13.11 mi12:30:431:40:147:395:13
7:39
#11094
25K
15.53 mi12:50:151:59:467:4319:32
8:03
#11389
30K
18.64 mi13:16:032:25:347:4925:48
8:18
#11700
20M
20.00 mi13:27:252:36:567:5111:22
8:22
#11766
21M
21.00 mi13:37:282:46:597:5710:03
10:03
#12273
35K
21.75 mi13:43:382:53:097:586:10
8:15
#12328
23M
23.00 mi13:54:483:04:198:0111:10
8:55
#12553
24M
24.00 mi14:03:143:12:458:028:26
8:26
#12624
40K
24.85 mi14:12:023:21:338:078:48
10:18
#13070
25.2M
25.20 mi14:14:593:24:308:072:57
8:33
#13018
Finish
26.22 mi14:23:263:32:578:088:27
8:18
#13043
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi107082187218710546(Top 40%)2109(Top 18%)2109(Top 175%)
10K6.21 mi3.10 mi11547-8392630-4432630-44312490(Top 47%)3146(Top 28%)3146(Top 261%)
15K9.32 mi3.11 mi11182+3652430+2002430+20010546(Top 40%)2109(Top 18%)2109(Top 175%)
20K12.43 mi3.11 mi11080+1022372+582372+5810925(Top 41%)2374(Top 21%)2374(Top 197%)
Half13.11 mi0.68 mi11094-142383-112383-1111512(Top 43%)2653(Top 23%)2653(Top 220%)
25K15.53 mi2.42 mi11389-2952585-2022585-20213206(Top 50%)3749(Top 33%)3749(Top 311%)
30K18.64 mi3.11 mi11700-3112809-2242809-22413063(Top 49%)3792(Top 33%)3792(Top 314%)
20M20.00 mi1.36 mi11766-662863-542863-5412802(Top 48%)3743(Top 33%)3743(Top 310%)
21M21.00 mi1.00 mi12273-5073162-2993162-29918206(Top 68%)6871(Top 60%)6871(Top 569%)
35K21.75 mi0.75 mi12328-553212-503212-5013760(Top 52%)4423(Top 39%)4423(Top 366%)
23M23.00 mi1.25 mi12553-2253357-1453357-14515628(Top 59%)5526(Top 48%)5526(Top 458%)
24M24.00 mi1.00 mi12624-713426-693426-6914087(Top 53%)4714(Top 41%)4714(Top 391%)
40K24.85 mi0.85 mi13070-4463715-2893715-28920718(Top 78%)8445(Top 74%)8445(Top 700%)
25.2M25.20 mi0.35 mi13018+523697+183697+189989(Top 38%)2705(Top 24%)2705(Top 224%)
Finish26.22 mi1.02 mi13043-253724-273724-2714072(Top 53%)4776(Top 42%)4776(Top 396%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

10546

Females

2109

F50-54

2109

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

12490

Females

3146

F50-54

3146

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

10546

Females

2109

F50-54

2109

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

10925

Females

2374

F50-54

2374

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

11512

Females

2653

F50-54

2653

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13206

Females

3749

F50-54

3749

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

13063

Females

3792

F50-54

3792

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

12802

Females

3743

F50-54

3743

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

18206

Females

6871

F50-54

6871

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

13760

Females

4423

F50-54

4423

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

15628

Females

5526

F50-54

5526

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

14087

Females

4714

F50-54

4714

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20718

Females

8445

F50-54

8445

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

9989

Females

2705

F50-54

2705

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

14072

Females

4776

F50-54

4776

Passing Analysis

Category:
Athletes Passed
1207
Passed By
3542
Net Change
-2335
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10708
5K → 10K83922-839#10708#11547
10K → 15K41853+365#11547#11182
15K → 20K206104+102#11182#11080
20K → Half2135-14#11080#11094
Half → 25K50345-295#11094#11389
25K → 30K105416-311#11389#11700
30K → 20M78144-66#11700#11766
20M → 21M11518-507#11766#12273
21M → 35K3085-55#12273#12328
35K → 23M33258-225#12328#12553
23M → 24M52123-71#12553#12624
24M → 40K8454-446#12624#13070
40K → 25.2M597+52#13070#13018
25.2M → Finish5378-25#13018#13043
TOTALS12073542-2335
📊

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