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BOSTON MARATHON 2023

Leslie Althoff

Bib: 20737•F

IA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 41%
Division (F40-44)
#0 / 1878
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:05
Rank: #16860
Start → 5K
26:05 | 8:24/mi
10K· 6.21 mi
52:04
Rank: #17066 (-206)
5K → 10K
25:59 | 8:22/mi
15K· 9.32 mi
1:18:53
Rank: #17620 (-554)
10K → 15K
26:49 | 8:38/mi
20K· 12.43 mi
1:45:01
Rank: #17256 (+364)
15K → 20K
26:08 | 8:25/mi
Half· 13.11 mi
1:50:45
Rank: #17247 (+9)
20K → Half
5:44 | 8:24/mi
25K· 15.53 mi
2:11:44
Rank: #17210 (+37)
Half → 25K
20:59 | 8:39/mi
30K· 18.64 mi
2:39:30
Rank: #17097 (+113)
25K → 30K
27:46 | 8:56/mi
20M
2:51:51
Rank: #17081 (+16)
30K → 20M
12:21 | 9:05/mi
21M
3:01:23
Rank: #17008 (+73)
20M → 21M
9:32 | 9:32/mi
35K· 21.75 mi
3:07:54
Rank: #16993 (+15)
21M → 35K
6:31 | 8:43/mi
23M
3:18:40
Rank: #16811 (+182)
35K → 23M
10:46 | 8:36/mi
24M
3:27:12
Rank: #16708 (+103)
23M → 24M
8:32 | 8:32/mi
40K· 24.85 mi
3:34:59
Rank: #16711 (-3)
24M → 40K
7:47 | 9:06/mi
25.2M
3:38:17
Rank: #16678 (+33)
40K → 25.2M
3:18 | 9:34/mi
Finish· 26.22 mi
3:46:55
Rank: #16601 (+77)
25.2M → Finish
8:38 | 8:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:45
Pace8:27 /mi
2nd Half
Distance13.11 mi
Time1:56:10
Pace8:52 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:2326:058:2426:05
8:24
-
10K
6.21 mi11:44:2252:048:2325:59
8:22
-0:02
15K
9.32 mi12:11:111:18:538:2826:49
8:38
+0:16
20K
12.43 mi12:37:191:45:018:2726:08
8:25
-0:13
Half
13.11 mi12:43:031:50:458:275:44
8:24
-0:01
25K
15.53 mi13:04:022:11:448:2920:59
8:39
+0:15
30K
18.64 mi13:31:482:39:308:3327:46
8:56
+0:17
20M
20.00 mi13:44:092:51:518:3612:21
9:05
+0:09
21M
21.00 mi13:53:413:01:238:389:32
9:32
+0:27
35K
21.75 mi14:00:123:07:548:386:31
8:43
-0:49
23M
23.00 mi14:10:583:18:408:3810:46
8:36
-0:07
24M
24.00 mi14:19:303:27:128:388:32
8:32
-0:04
40K
24.85 mi14:27:173:34:598:397:47
9:06
+0:34
25.2M
25.20 mi14:30:353:38:178:403:18
9:34
+0:28
Finish
26.22 mi14:39:133:46:558:408:38
8:28
-1:06

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

8:22 /mi

Average Pace

8:40 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:34:05

94% of race

Time at Steady Pace

12:50

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:39 /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 mi11:18:2326:058:2426:05
8:24
#16860
10K
6.21 mi11:44:2252:048:2325:59
8:22
#17066
15K
9.32 mi12:11:111:18:538:2826:49
8:38
#17620
20K
12.43 mi12:37:191:45:018:2726:08
8:25
#17256
Half
13.11 mi12:43:031:50:458:275:44
8:24
#17247
25K
15.53 mi13:04:022:11:448:2920:59
8:39
#17210
30K
18.64 mi13:31:482:39:308:3327:46
8:56
#17097
20M
20.00 mi13:44:092:51:518:3612:21
9:05
#17081
21M
21.00 mi13:53:413:01:238:389:32
9:32
#17008
35K
21.75 mi14:00:123:07:548:386:31
8:43
#16993
23M
23.00 mi14:10:583:18:408:3810:46
8:36
#16811
24M
24.00 mi14:19:303:27:128:388:32
8:32
#16708
40K
24.85 mi14:27:173:34:598:397:47
9:06
#16711
25.2M
25.20 mi14:30:353:38:178:403:18
9:34
#16678
Finish
26.22 mi14:39:133:46:558:408:38
8:28
#16601
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi168605833583318630(Top 70%)6873(Top 60%)6873(Top 366%)
10K6.21 mi3.10 mi17066-2065960-1275960-12717338(Top 65%)6086(Top 53%)6086(Top 324%)
15K9.32 mi3.11 mi17620-5546286-3266286-32618630(Top 70%)6873(Top 60%)6873(Top 366%)
20K12.43 mi3.11 mi17256+3646083+2036083+20316326(Top 61%)5547(Top 49%)5547(Top 295%)
Half13.11 mi0.68 mi17247+96077+66077+617191(Top 65%)6007(Top 53%)6007(Top 320%)
25K15.53 mi2.42 mi17210+376068+96068+917136(Top 64%)6079(Top 53%)6079(Top 324%)
30K18.64 mi3.11 mi17097+1136024+446024+4416856(Top 63%)5983(Top 52%)5983(Top 319%)
20M20.00 mi1.36 mi17081+166018+66018+617001(Top 64%)6161(Top 54%)6161(Top 328%)
21M21.00 mi1.00 mi17008+735994+245994+2416137(Top 61%)5704(Top 50%)5704(Top 304%)
35K21.75 mi0.75 mi16993+155989+55989+516487(Top 62%)5986(Top 52%)5986(Top 319%)
23M23.00 mi1.25 mi16811+1825907+825907+8213824(Top 52%)4529(Top 40%)4529(Top 241%)
24M24.00 mi1.00 mi16708+1035865+425865+4214711(Top 55%)5079(Top 44%)5079(Top 270%)
40K24.85 mi0.85 mi16711-35887-225887-2216663(Top 63%)6216(Top 54%)6216(Top 331%)
25.2M25.20 mi0.35 mi16678+335875+125875+1215570(Top 58%)5631(Top 49%)5631(Top 300%)
Finish26.22 mi1.02 mi16601+775840+355840+3515271(Top 57%)5414(Top 47%)5414(Top 288%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

18630

Females

6873

F40-44

6873

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

17338

Females

6086

F40-44

6086

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

18630

Females

6873

F40-44

6873

15K→20K

9.3 - 12.4 mi

Top 61%
×5stories
+106ft-86ft

Overall

16326

Females

5547

F40-44

5547

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

17191

Females

6007

F40-44

6007

Half→25K

13.1 - 15.5 mi

Top 64%
×4stories
+66ft-88ft

Overall

17136

Females

6079

F40-44

6079

25K→30K

15.5 - 18.6 mi

Top 63%
×9stories
+181ft-148ft

Overall

16856

Females

5983

F40-44

5983

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

17001

Females

6161

F40-44

6161

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

16137

Females

5704

F40-44

5704

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

16487

Females

5986

F40-44

5986

35K→23M

21.8 - 23.0 mi

Top 52%
×5stories
+23ft-63ft

Overall

13824

Females

4529

F40-44

4529

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

14711

Females

5079

F40-44

5079

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16663

Females

6216

F40-44

6216

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15570

Females

5631

F40-44

5631

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

15271

Females

5414

F40-44

5414

Passing Analysis

Category:
Athletes Passed
1844
Passed By
1585
Net Change
+259
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16860
5K → 10K220426-206#16860#17066
10K → 15K62616-554#17066#17620
15K → 20K40036+364#17620#17256
20K → Half3526+9#17256#17247
Half → 25K13598+37#17247#17210
25K → 30K221108+113#17210#17097
30K → 20M8266+16#17097#17081
20M → 21M12148+73#17081#17008
21M → 35K5338+15#17008#16993
35K → 23M19210+182#16993#16811
23M → 24M12017+103#16811#16708
24M → 40K5760-3#16708#16711
40K → 25.2M4411+33#16711#16678
25.2M → Finish10225+77#16678#16601
TOTALS18441585+259
📊

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