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BOSTON MARATHON 2023

Katherine Schlager

Bib: 25571•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:02
Rank: #22568
Start → 5K
30:02 | 9:40/mi
10K· 6.21 mi
1:00:23
Rank: #22958 (-390)
5K → 10K
30:21 | 9:46/mi
15K· 9.32 mi
1:31:30
Rank: #23190 (-232)
10K → 15K
31:07 | 10:01/mi
20K· 12.43 mi
2:04:51
Rank: #23531 (-341)
15K → 20K
33:21 | 10:44/mi
Half· 13.11 mi
2:11:48
Rank: #23528 (+3)
20K → Half
6:57 | 10:11/mi
25K· 15.53 mi
2:37:29
Rank: #23486 (+42)
Half → 25K
25:41 | 10:36/mi
30K· 18.64 mi
3:12:34
Rank: #23501 (-15)
25K → 30K
35:05 | 11:18/mi
20M
3:28:07
Rank: #23492 (+9)
30K → 20M
15:33 | 11:27/mi
21M
3:41:39
Rank: #23587 (-95)
20M → 21M
13:32 | 13:32/mi
35K· 21.75 mi
3:49:44
Rank: #23567 (+20)
21M → 35K
8:05 | 10:48/mi
23M
4:04:19
Rank: #23575 (-8)
35K → 23M
14:35 | 11:39/mi
24M
4:14:35
Rank: #23510 (+65)
23M → 24M
10:16 | 10:16/mi
40K· 24.85 mi
4:25:52
Rank: #23616 (-106)
24M → 40K
11:17 | 13:12/mi
25.2M
4:29:48
Rank: #23590 (+26)
40K → 25.2M
3:56 | 11:24/mi
Finish· 26.22 mi
4:40:02
Rank: #23539 (+51)
25.2M → Finish
10:14 | 10:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:48
Pace10:03 /mi
2nd Half
Distance13.11 mi
Time2:28:14
Pace11:18 /mi
📊Positive Split: 12.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:5230:029:4030:02
9:40
-
10K
6.21 mi12:16:131:00:239:4330:21
9:46
+0:06
15K
9.32 mi12:47:201:31:309:4931:07
10:01
+0:15
20K
12.43 mi13:20:412:04:5110:0333:21
10:44
+0:43
Half
13.11 mi13:27:382:11:4810:036:57
10:11
-0:33
25K
15.53 mi13:53:192:37:2910:0825:41
10:36
+0:25
30K
18.64 mi14:28:243:12:3410:2035:05
11:18
+0:42
20M
20.00 mi14:43:573:28:0710:2415:33
11:27
+0:09
21M
21.00 mi14:57:293:41:3910:3313:32
13:32
+2:05
35K
21.75 mi15:05:343:49:4410:348:05
10:48
-2:44
23M
23.00 mi15:20:094:04:1910:3714:35
11:39
+0:51
24M
24.00 mi15:30:254:14:3510:3610:16
10:16
-1:23
40K
24.85 mi15:41:424:25:5210:4211:17
13:12
+2:56
25.2M
25.20 mi15:45:384:29:4810:423:56
11:24
-1:48
Finish
26.22 mi15:55:524:40:0210:4110:14
10:03
-1:21

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

9:40 /mi

Average Pace

10:41 /mi

Slowest Pace

13:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:44

36% of race

Time at Steady Pace

1:24:20

30% of race

Time at Slower Pace

1:33:58

34% of race

Average Pace: 10:41 /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 mi11:45:5230:029:4030:02
9:40
#22568
10K
6.21 mi12:16:131:00:239:4330:21
9:46
#22958
15K
9.32 mi12:47:201:31:309:4931:07
10:01
#23190
20K
12.43 mi13:20:412:04:5110:0333:21
10:44
#23531
Half
13.11 mi13:27:382:11:4810:036:57
10:11
#23528
25K
15.53 mi13:53:192:37:2910:0825:41
10:36
#23486
30K
18.64 mi14:28:243:12:3410:2035:05
11:18
#23501
20M
20.00 mi14:43:573:28:0710:2415:33
11:27
#23492
21M
21.00 mi14:57:293:41:3910:3313:32
13:32
#23587
35K
21.75 mi15:05:343:49:4410:348:05
10:48
#23567
23M
23.00 mi15:20:094:04:1910:3714:35
11:39
#23575
24M
24.00 mi15:30:254:14:3510:3610:16
10:16
#23510
40K
24.85 mi15:41:424:25:5210:4211:17
13:12
#23616
25.2M
25.20 mi15:45:384:29:4810:423:56
11:24
#23590
Finish
26.22 mi15:55:524:40:0210:4110:14
10:03
#23539
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi225689170917023532(Top 88%)9625(Top 84%)9625(Top 197%)
10K6.21 mi3.10 mi22958-3909339-1699339-16923214(Top 87%)9455(Top 83%)9455(Top 194%)
15K9.32 mi3.11 mi23190-2329450-1119450-11123532(Top 88%)9625(Top 84%)9625(Top 197%)
20K12.43 mi3.11 mi23531-3419627-1779627-17724227(Top 91%)10048(Top 88%)10048(Top 206%)
Half13.11 mi0.68 mi23528+39620+79620+723661(Top 89%)9717(Top 85%)9717(Top 199%)
25K15.53 mi2.42 mi23486+429613+79613+723343(Top 88%)9584(Top 84%)9584(Top 196%)
30K18.64 mi3.11 mi23501-159645-329645-3223571(Top 89%)9770(Top 86%)9770(Top 200%)
20M20.00 mi1.36 mi23492+99654-99654-923439(Top 88%)9755(Top 85%)9755(Top 200%)
21M21.00 mi1.00 mi23587-959712-589712-5824622(Top 92%)10413(Top 91%)10413(Top 213%)
35K21.75 mi0.75 mi23567+209704+89704+822957(Top 86%)9573(Top 84%)9573(Top 196%)
23M23.00 mi1.25 mi23575-89710-69710-623505(Top 88%)9856(Top 86%)9856(Top 202%)
24M24.00 mi1.00 mi23510+659691+199691+1921504(Top 81%)8854(Top 78%)8854(Top 181%)
40K24.85 mi0.85 mi23616-1069758-679758-6725105(Top 94%)10729(Top 94%)10729(Top 220%)
25.2M25.20 mi0.35 mi23590+269743+159743+1521402(Top 80%)8821(Top 77%)8821(Top 181%)
Finish26.22 mi1.02 mi23539+519730+139730+1321893(Top 82%)9064(Top 79%)9064(Top 186%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21stories
+97ft-345ft

Overall

23532

Females

9625

F18-39

9625

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

23214

Females

9455

F18-39

9455

10K→15K

6.2 - 9.3 mi

Top 88%
×3stories
+67ft-78ft

Overall

23532

Females

9625

F18-39

9625

15K→20K

9.3 - 12.4 mi

Top 91%
×5stories
+106ft-86ft

Overall

24227

Females

10048

F18-39

10048

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

23661

Females

9717

F18-39

9717

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

23343

Females

9584

F18-39

9584

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

23571

Females

9770

F18-39

9770

30K→20M

18.6 - 20.0 mi

Top 88%
×5stories
+64ft-50ft

Overall

23439

Females

9755

F18-39

9755

20M→21M

20.0 - 21.0 mi

Top 92%
×8stories
+106ft-24ft

Overall

24622

Females

10413

F18-39

10413

21M→35K

21.0 - 21.8 mi

Top 86%
×7stories
+17ft-86ft

Overall

22957

Females

9573

F18-39

9573

35K→23M

21.8 - 23.0 mi

Top 88%
×5stories
+23ft-63ft

Overall

23505

Females

9856

F18-39

9856

23M→24M

23.0 - 24.0 mi

Top 81%
×6stories
+12ft-82ft

Overall

21504

Females

8854

F18-39

8854

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

25105

Females

10729

F18-39

10729

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21402

Females

8821

F18-39

8821

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2stories
+22ft-21ft

Overall

21893

Females

9064

F18-39

9064

Passing Analysis

Category:
Athletes Passed
740
Passed By
1711
Net Change
-971
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22568
5K → 10K102492-390#22568#22958
10K → 15K63295-232#22958#23190
15K → 20K34375-341#23190#23531
20K → Half2926+3#23531#23528
Half → 25K11068+42#23528#23486
25K → 30K99114-15#23486#23501
30K → 20M5849+9#23501#23492
20M → 21M9104-95#23492#23587
21M → 35K3212+20#23587#23567
35K → 23M4149-8#23567#23575
23M → 24M705+65#23575#23510
24M → 40K8114-106#23510#23616
40K → 25.2M271+26#23616#23590
25.2M → Finish587+51#23590#23539
TOTALS7401711-971
📊

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