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BOSTON MARATHON 2023

Kathrine Littlejohn

MA

Bib: 18215 F

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

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:09/mi
25:19
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:01/mi
50:12
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:56/mi
1:14:50
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:01/mi
1:39:44
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:01/mi
1:45:12
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:05/mi
2:04:49
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:21/mi
2:30:46
↑ 181↓ 1480.2%
138 ft elev
20M
8:33/mi
2:42:23
↑ 64↓ 500.2%
148 ft elev
21M
8:57/mi
2:51:20
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:39/mi
2:57:48
↑ 17↓ 861.7%
156 ft elev
23M
8:39/mi
3:08:38
↑ 23↓ 630.6%
116 ft elev
24M
8:41/mi
3:17:19
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:49/mi
3:24:51
↓ 200.3%
20 ft elev
25.2M
10:44/mi
3:28:33
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:15/mi
3:36:57
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:12
Pace8:01 /mi
2nd Half
Distance13.11 mi
Time1:51:45
Pace8:31 /mi
📊Positive Split: 6.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2525:198:0925:19
8:09
-
10K
6.21 mi11:41:1850:128:0524:53
8:01
-0:08
15K
9.32 mi12:05:561:14:508:0224:38
7:56
-0:05
20K
12.43 mi12:30:501:39:448:0224:54
8:01
+0:05
Half
13.11 mi12:36:181:45:128:015:28
8:01
0:00
25K
15.53 mi12:55:552:04:498:0219:37
8:05
+0:04
30K
18.64 mi13:21:522:30:468:0525:57
8:21
+0:16
20M
20.00 mi13:33:292:42:238:0711:37
8:33
+0:12
21M
21.00 mi13:42:262:51:208:108:57
8:57
+0:24
35K
21.75 mi13:48:542:57:488:116:28
8:39
-0:18
23M
23.00 mi13:59:443:08:388:1210:50
8:39
0:00
24M
24.00 mi14:08:253:17:198:138:41
8:41
+0:02
40K
24.85 mi14:15:573:24:518:157:32
8:49
+0:08
25.2M
25.20 mi14:19:393:28:338:173:42
10:44
+1:55
Finish
26.22 mi14:28:033:36:578:178:24
8:15
-2:29

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

7:56 /mi

Average Pace

8:17 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

24:38

11% of race

Time at Steady Pace

2:52:08

79% of race

Time at Slower Pace

20:11

9% of race

Average Pace: 8:16 /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 mi11:16:2525:198:0925:19
8:09
#15075
10K
6.21 mi11:41:1850:128:0524:53
8:01
#14970
15K
9.32 mi12:05:561:14:508:0224:38
7:56
#14556
20K
12.43 mi12:30:501:39:448:0224:54
8:01
#14288
Half
13.11 mi12:36:181:45:128:015:28
8:01
#14301
25K
15.53 mi12:55:552:04:498:0219:37
8:05
#14155
30K
18.64 mi13:21:522:30:468:0525:57
8:21
#14011
20M
20.00 mi13:33:292:42:238:0711:37
8:33
#13995
21M
21.00 mi13:42:262:51:208:108:57
8:57
#13907
35K
21.75 mi13:48:542:57:488:116:28
8:39
#13982
23M
23.00 mi13:59:443:08:388:1210:50
8:39
#13977
24M
24.00 mi14:08:253:17:198:138:41
8:41
#14032
40K
24.85 mi14:15:573:24:518:157:32
8:49
#14070
25.2M
25.20 mi14:19:393:28:338:173:42
10:44
#14213
Finish
26.22 mi14:28:033:36:578:178:24
8:15
#14179
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi150754694469413825(Top 52%)3984(Top 35%)3984(Top 82%)
10K6.21 mi3.10 mi14970+1054634+604634+6014877(Top 56%)4594(Top 40%)4594(Top 94%)
15K9.32 mi3.11 mi14556+4144382+2524382+25213825(Top 52%)3984(Top 35%)3984(Top 82%)
20K12.43 mi3.11 mi14288+2684248+1344248+13413578(Top 51%)3864(Top 34%)3864(Top 79%)
Half13.11 mi0.68 mi14301-134260-124260-1214544(Top 55%)4413(Top 39%)4413(Top 90%)
25K15.53 mi2.42 mi14155+1464199+614199+6113470(Top 51%)3909(Top 34%)3909(Top 80%)
30K18.64 mi3.11 mi14011+1444153+464153+4613372(Top 50%)3961(Top 35%)3961(Top 81%)
20M20.00 mi1.36 mi13995+164166-134166-1313939(Top 52%)4373(Top 38%)4373(Top 90%)
21M21.00 mi1.00 mi13907+884121+454121+4513148(Top 49%)4029(Top 35%)4029(Top 82%)
35K21.75 mi0.75 mi13982-754187-664187-6616103(Top 60%)5742(Top 50%)5742(Top 118%)
23M23.00 mi1.25 mi13977+54218-314218-3114095(Top 53%)4670(Top 41%)4670(Top 96%)
24M24.00 mi1.00 mi14032-554271-534271-5315574(Top 59%)5564(Top 49%)5564(Top 114%)
40K24.85 mi0.85 mi14070-384316-454316-4515146(Top 57%)5376(Top 47%)5376(Top 110%)
25.2M25.20 mi0.35 mi14213-1434418-1024418-10219790(Top 74%)7931(Top 69%)7931(Top 162%)
Finish26.22 mi1.02 mi14179+344411+74411+713743(Top 52%)4602(Top 40%)4602(Top 94%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

13825

Females

3984

F18-39

3984

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

14877

Females

4594

F18-39

4594

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

13825

Females

3984

F18-39

3984

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

13578

Females

3864

F18-39

3864

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

14544

Females

4413

F18-39

4413

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

13470

Females

3909

F18-39

3909

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

13372

Females

3961

F18-39

3961

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

13939

Females

4373

F18-39

4373

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13148

Females

4029

F18-39

4029

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

16103

Females

5742

F18-39

5742

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

14095

Females

4670

F18-39

4670

23M→24M

23.0 - 24.0 mi

Top 59%
×6story building
+12ft-82ft

Overall

15574

Females

5564

F18-39

5564

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15146

Females

5376

F18-39

5376

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19790

Females

7931

F18-39

7931

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

13743

Females

4602

F18-39

4602

Passing Analysis

Category:
Athletes Passed
2171
Passed By
1275
Net Change
+896
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15075
5K → 10K346241+105#15075#14970
10K → 15K46349+414#14970#14556
15K → 20K32254+268#14556#14288
20K → Half2235-13#14288#14301
Half → 25K21064+146#14301#14155
25K → 30K265121+144#14155#14011
30K → 20M10084+16#14011#13995
20M → 21M13749+88#13995#13907
21M → 35K30105-75#13907#13982
35K → 23M8883+5#13982#13977
23M → 24M46101-55#13977#14032
24M → 40K5795-38#14032#14070
40K → 25.2M1144-143#14070#14213
25.2M → Finish8450+34#14213#14179
TOTALS21711275+896
📊

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