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BOSTON MARATHON 2023

Annie Lu

Bib: 18493•F

GA

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
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
8:13/mi
25:33
↑ 97↓ 3451.5%
10K· 6.21 mi
8:06/mi
50:43
↑ 79↓ 1380.4%
15K· 9.32 mi
8:13/mi
1:16:15
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:42:44
↑ 106↓ 860.1%
Half· 13.11 mi
8:45/mi
1:48:42
↑ 19↓ 370.5%
25K· 15.53 mi
9:02/mi
2:10:35
↑ 66↓ 880.2%
30K· 18.64 mi
10:09/mi
2:42:08
↑ 181↓ 1480.2%
20M
9:36/mi
2:55:11
↑ 64↓ 500.2%
21M
10:31/mi
3:05:42
↑ 106↓ 241.6%
35K· 21.75 mi
9:20/mi
3:12:41
↑ 17↓ 861.7%
23M
9:23/mi
3:24:26
↑ 23↓ 630.6%
24M
8:47/mi
3:33:13
↓ 821.3%
40K· 24.85 mi
9:05/mi
3:40:59
↓ 200.3%
25.2M
9:54/mi
3:44:24
↑ 13↓ 160.2%
Finish· 26.22 mi
8:31/mi
3:53:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:42
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time2:04:23
Pace9:29 /mi
📊Positive Split: 14.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2725:338:1325:33
8:13
-
10K
6.21 mi11:41:3750:438:1025:10
8:06
-0:07
15K
9.32 mi12:07:091:16:158:1125:32
8:13
+0:07
20K
12.43 mi12:33:381:42:448:1626:29
8:31
+0:18
Half
13.11 mi12:39:361:48:428:175:58
8:45
+0:14
25K
15.53 mi13:01:292:10:358:2421:53
9:02
+0:17
30K
18.64 mi13:33:022:42:088:4231:33
10:09
+1:07
20M
20.00 mi13:46:052:55:118:4613:03
9:36
-0:33
21M
21.00 mi13:56:363:05:428:5110:31
10:31
+0:55
35K
21.75 mi14:03:353:12:418:526:59
9:20
-1:11
23M
23.00 mi14:15:203:24:268:5311:45
9:23
+0:03
24M
24.00 mi14:24:073:33:138:538:47
8:47
-0:36
40K
24.85 mi14:31:533:40:598:537:46
9:05
+0:18
25.2M
25.20 mi14:35:183:44:248:543:25
9:54
+0:49
Finish
26.22 mi14:43:593:53:058:548:41
8:31
-1:23

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

8:06 /mi

Average Pace

8:54 /mi

Slowest Pace

10:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:25

48% of race

Time at Steady Pace

1:03:08

27% of race

Time at Slower Pace

58:32

25% of race

Average Pace: 8:53 /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 mi11:16:2725:338:1325:33
8:13
#15633
10K
6.21 mi11:41:3750:438:1025:10
8:06
#15566
15K
9.32 mi12:07:091:16:158:1125:32
8:13
#15686
20K
12.43 mi12:33:381:42:448:1626:29
8:31
#16036
Half
13.11 mi12:39:361:48:428:175:58
8:45
#16233
25K
15.53 mi13:01:292:10:358:2421:53
9:02
#16784
30K
18.64 mi13:33:022:42:088:4231:33
10:09
#17961
20M
20.00 mi13:46:052:55:118:4613:03
9:36
#18095
21M
21.00 mi13:56:363:05:428:5110:31
10:31
#18248
35K
21.75 mi14:03:353:12:418:526:59
9:20
#18271
23M
23.00 mi14:15:203:24:268:5311:45
9:23
#18251
24M
24.00 mi14:24:073:33:138:538:47
8:47
#18166
40K
24.85 mi14:31:533:40:598:537:46
9:05
#18108
25.2M
25.20 mi14:35:183:44:248:543:25
9:54
#18093
Finish
26.22 mi14:43:593:53:058:548:41
8:31
#17994
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi156335062506216006(Top 60%)5306(Top 46%)5306(Top 440%)
10K6.21 mi3.10 mi15566+675009+535009+5315532(Top 58%)4976(Top 44%)4976(Top 412%)
15K9.32 mi3.11 mi15686-1205090-815090-8116006(Top 60%)5306(Top 46%)5306(Top 440%)
20K12.43 mi3.11 mi16036-3505327-2375327-23717023(Top 64%)5938(Top 52%)5938(Top 492%)
Half13.11 mi0.68 mi16233-1975448-1215448-12119208(Top 72%)7199(Top 63%)7199(Top 596%)
25K15.53 mi2.42 mi16784-5515825-3775825-37719092(Top 72%)7179(Top 63%)7179(Top 595%)
30K18.64 mi3.11 mi17961-11776542-7176542-71721428(Top 80%)8588(Top 75%)8588(Top 712%)
20M20.00 mi1.36 mi18095-1346642-1006642-10019240(Top 72%)7418(Top 65%)7418(Top 615%)
21M21.00 mi1.00 mi18248-1536748-1066748-10619648(Top 74%)7729(Top 68%)7729(Top 640%)
35K21.75 mi0.75 mi18271-236760-126760-1219299(Top 72%)7540(Top 66%)7540(Top 625%)
23M23.00 mi1.25 mi18251+206757+36757+317892(Top 67%)6803(Top 60%)6803(Top 564%)
24M24.00 mi1.00 mi18166+856725+326725+3216140(Top 61%)5890(Top 52%)5890(Top 488%)
40K24.85 mi0.85 mi18108+586702+236702+2316592(Top 62%)6182(Top 54%)6182(Top 512%)
25.2M25.20 mi0.35 mi18093+156697+56697+517072(Top 64%)6464(Top 57%)6464(Top 536%)
Finish26.22 mi1.02 mi17994+996649+486649+4815581(Top 59%)5586(Top 49%)5586(Top 463%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

16006

Females

5306

F50-54

5306

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

15532

Females

4976

F50-54

4976

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

16006

Females

5306

F50-54

5306

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

17023

Females

5938

F50-54

5938

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

19208

Females

7199

F50-54

7199

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

19092

Females

7179

F50-54

7179

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

21428

Females

8588

F50-54

8588

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

19240

Females

7418

F50-54

7418

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

19648

Females

7729

F50-54

7729

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

19299

Females

7540

F50-54

7540

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17892

Females

6803

F50-54

6803

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16140

Females

5890

F50-54

5890

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16592

Females

6182

F50-54

6182

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

17072

Females

6464

F50-54

6464

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15581

Females

5586

F50-54

5586

Passing Analysis

Category:
Athletes Passed
1156
Passed By
3517
Net Change
-2361
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15633
5K → 10K321254+67#15633#15566
10K → 15K137257-120#15566#15686
15K → 20K80430-350#15686#16036
20K → Half10207-197#16036#16233
Half → 25K33584-551#16233#16784
25K → 30K191196-1177#16784#17961
30K → 20M50184-134#17961#18095
20M → 21M56209-153#18095#18248
21M → 35K3760-23#18248#18271
35K → 23M9171+20#18271#18251
23M → 24M9813+85#18251#18166
24M → 40K7719+58#18166#18108
40K → 25.2M3015+15#18108#18093
25.2M → Finish11718+99#18093#17994
TOTALS11563517-2361
📊

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