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BOSTON MARATHON 2023

Tracy Larson

Bib: 7668•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 17%
Masters (Masters Women)
#0 / 6539
Top 7%
Division (F40-44)
#0 / 1878
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:14
Rank: #9457
Start → 5K
23:14 | 7:29/mi
10K· 6.21 mi
46:43
Rank: #10216 (-759)
5K → 10K
23:29 | 7:34/mi
15K· 9.32 mi
1:10:19
Rank: #10448 (-232)
10K → 15K
23:36 | 7:36/mi
20K· 12.43 mi
1:34:13
Rank: #10536 (-88)
15K → 20K
23:54 | 7:42/mi
Half· 13.11 mi
1:39:24
Rank: #10568 (-32)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:58:08
Rank: #10520 (+48)
Half → 25K
18:44 | 7:44/mi
30K· 18.64 mi
2:22:34
Rank: #10347 (+173)
25K → 30K
24:26 | 7:52/mi
20M
2:33:10
Rank: #10227 (+120)
30K → 20M
10:36 | 7:48/mi
21M
2:41:12
Rank: #10025 (+202)
20M → 21M
8:02 | 8:02/mi
35K· 21.75 mi
2:46:50
Rank: #9953 (+72)
21M → 35K
5:38 | 7:32/mi
23M
2:56:47
Rank: #9896 (+57)
35K → 23M
9:57 | 7:57/mi
24M
3:04:30
Rank: #9835 (+61)
23M → 24M
7:43 | 7:43/mi
40K· 24.85 mi
3:11:09
Rank: #9765 (+70)
24M → 40K
6:39 | 7:47/mi
25.2M
3:14:00
Rank: #9711 (+54)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:21:38
Rank: #9631 (+80)
25.2M → Finish
7:38 | 7:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:24
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:42:14
Pace7:48 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:1623:147:2923:14
7:29
-
10K
6.21 mi10:50:4546:437:3123:29
7:34
+0:05
15K
9.32 mi11:14:211:10:197:3323:36
7:36
+0:02
20K
12.43 mi11:38:151:34:137:3523:54
7:42
+0:06
Half
13.11 mi11:43:261:39:247:355:11
7:36
-0:06
25K
15.53 mi12:02:101:58:087:3618:44
7:44
+0:08
30K
18.64 mi12:26:362:22:347:3924:26
7:52
+0:08
20M
20.00 mi12:37:122:33:107:3910:36
7:48
-0:04
21M
21.00 mi12:45:142:41:127:418:02
8:02
+0:14
35K
21.75 mi12:50:522:46:507:405:38
7:32
-0:30
23M
23.00 mi13:00:492:56:477:419:57
7:57
+0:25
24M
24.00 mi13:08:323:04:307:417:43
7:43
-0:14
40K
24.85 mi13:15:113:11:097:416:39
7:47
+0:04
25.2M
25.20 mi13:18:023:14:007:422:51
8:16
+0:29
Finish
26.22 mi13:25:403:21:387:427:38
7:29
-0:47

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

7:29 /mi

Average Pace

7:42 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:18:47

99% of race

Time at Steady Pace

2:51

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:41 /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 mi10:27:1623:147:2923:14
7:29
#9457
10K
6.21 mi10:50:4546:437:3123:29
7:34
#10216
15K
9.32 mi11:14:211:10:197:3323:36
7:36
#10448
20K
12.43 mi11:38:151:34:137:3523:54
7:42
#10536
Half
13.11 mi11:43:261:39:247:355:11
7:36
#10568
25K
15.53 mi12:02:101:58:087:3618:44
7:44
#10520
30K
18.64 mi12:26:362:22:347:3924:26
7:52
#10347
20M
20.00 mi12:37:122:33:107:3910:36
7:48
#10227
21M
21.00 mi12:45:142:41:127:418:02
8:02
#10025
35K
21.75 mi12:50:522:46:507:405:38
7:32
#9953
23M
23.00 mi13:00:492:56:477:419:57
7:57
#9896
24M
24.00 mi13:08:323:04:307:417:43
7:43
#9835
40K
24.85 mi13:15:113:11:097:416:39
7:47
#9765
25.2M
25.20 mi13:18:023:14:007:422:51
8:16
#9711
Finish
26.22 mi13:25:403:21:387:427:38
7:29
#9631
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi94571602160210989(Top 41%)2333(Top 20%)2333(Top 124%)
10K6.21 mi3.10 mi10216-7591935-3331935-33310950(Top 41%)2286(Top 20%)2286(Top 122%)
15K9.32 mi3.11 mi10448-2322039-1042039-10410989(Top 41%)2333(Top 20%)2333(Top 124%)
20K12.43 mi3.11 mi10536-882089-502089-5010864(Top 41%)2339(Top 20%)2339(Top 125%)
Half13.11 mi0.68 mi10568-322101-122101-1211020(Top 41%)2362(Top 21%)2362(Top 126%)
25K15.53 mi2.42 mi10520+482105-42105-410504(Top 39%)2227(Top 19%)2227(Top 119%)
30K18.64 mi3.11 mi10347+1732074+312074+319864(Top 37%)2097(Top 18%)2097(Top 112%)
20M20.00 mi1.36 mi10227+1202034+402034+408890(Top 33%)1757(Top 15%)1757(Top 94%)
21M21.00 mi1.00 mi10025+2021963+711963+717594(Top 29%)1360(Top 12%)1360(Top 72%)
35K21.75 mi0.75 mi9953+721946+171946+178783(Top 33%)1816(Top 16%)1816(Top 97%)
23M23.00 mi1.25 mi9896+571950-41950-49410(Top 35%)2219(Top 19%)2219(Top 118%)
24M24.00 mi1.00 mi9835+611951-11951-19213(Top 35%)2201(Top 19%)2201(Top 117%)
40K24.85 mi0.85 mi9765+701953-21953-28564(Top 32%)1966(Top 17%)1966(Top 105%)
25.2M25.20 mi0.35 mi9711+541935+181935+188163(Top 31%)1890(Top 17%)1890(Top 101%)
Finish26.22 mi1.02 mi9631+801929+61929+68506(Top 32%)2027(Top 18%)2027(Top 108%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

10989

Females

2333

F40-44

2333

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10950

Females

2286

F40-44

2286

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

10989

Females

2333

F40-44

2333

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

10864

Females

2339

F40-44

2339

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

11020

Females

2362

F40-44

2362

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

10504

Females

2227

F40-44

2227

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9864

Females

2097

F40-44

2097

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

8890

Females

1757

F40-44

1757

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7594

Females

1360

F40-44

1360

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8783

Females

1816

F40-44

1816

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9410

Females

2219

F40-44

2219

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9213

Females

2201

F40-44

2201

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8564

Females

1966

F40-44

1966

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8163

Females

1890

F40-44

1890

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8506

Females

2027

F40-44

2027

Passing Analysis

Category:
Athletes Passed
1631*
Passed By
1804
Net Change
-174
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9457
5K → 10K81839-759#9457#10216
10K → 15K108340-232#10216#10448
15K → 20K120208-88#10448#10536
20K → Half2355-32#10536#10568
Half → 25K14597+48#10568#10520
25K → 30K24774+173#10520#10347
30K → 20M145*25+120#10347#10227
20M → 21M2097+202#10227#10025
21M → 35K83*11+72#10025#9953
35K → 23M10144+57#9953#9896
23M → 24M9029+61#9896#9835
24M → 40K105*35+70#9835#9765
40K → 25.2M628+54#9765#9711
25.2M → Finish112*32+80#9711#9631
TOTALS1631*1804-174

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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