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BOSTON MARATHON 2023

Kathleen Cliffe

Bib: 12014•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 31%
Gender (Female)
#0 / 11423
Top 12%
Division (F18-39)
#0 / 4884
Top 22%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:46
Rank: #6296
Start → 5K
7:00/mi
21:46 split
10K· 6.21 mi
43:20
Rank: #6356 (-60)
5K → 10K
6:56/mi
21:34 split
15K· 9.32 mi
1:05:12
Rank: #6485 (-129)
10K → 15K
7:02/mi
21:52 split
20K· 12.43 mi
1:27:45
Rank: #6712 (-227)
15K → 20K
7:15/mi
22:33 split
Half· 13.11 mi
1:32:41
Rank: #6768 (-56)
20K → Half
7:14/mi
4:56 split
25K· 15.53 mi
1:50:42
Rank: #6930 (-162)
Half → 25K
7:26/mi
18:01 split
30K· 18.64 mi
2:14:58
Rank: #7243 (-313)
25K → 30K
7:49/mi
24:16 split
20M
2:25:51
Rank: #7393 (-150)
30K → 20M
8:01/mi
10:53 split
21M
2:34:25
Rank: #7546 (-153)
20M → 21M
8:34/mi
8:34 split
35K· 21.75 mi
2:40:15
Rank: #7622 (-76)
21M → 35K
7:48/mi
5:50 split
23M
2:50:30
Rank: #7792 (-170)
35K → 23M
8:11/mi
10:15 split
24M
2:58:35
Rank: #7955 (-163)
23M → 24M
8:05/mi
8:05 split
40K· 24.85 mi
3:05:36
Rank: #8061 (-106)
24M → 40K
8:12/mi
7:01 split
25.2M
3:08:40
Rank: #8116 (-55)
40K → 25.2M
8:54/mi
3:04 split
Finish· 26.22 mi
3:16:46
Rank: #8226 (-110)
25.2M → Finish
7:57/mi
8:06 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:41
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:44:05
Pace7:56 /mi
📊Positive Split: 12.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:3221:467:0021:46
7:00
-
10K
6.21 mi11:11:0643:206:5821:34
6:56
-0:04
15K
9.32 mi11:32:581:05:127:0021:52
7:02
+0:06
20K
12.43 mi11:55:311:27:457:0422:33
7:15
+0:13
Half
13.11 mi12:00:271:32:417:044:56
7:14
-0:01
25K
15.53 mi12:18:281:50:427:0818:01
7:26
+0:12
30K
18.64 mi12:42:442:14:587:1424:16
7:49
+0:23
20M
20.00 mi12:53:372:25:517:1810:53
8:01
+0:12
21M
21.00 mi13:02:112:34:257:218:34
8:34
+0:33
35K
21.75 mi13:08:012:40:157:225:50
7:48
-0:46
23M
23.00 mi13:18:162:50:307:2510:15
8:11
+0:23
24M
24.00 mi13:26:212:58:357:268:05
8:05
-0:06
40K
24.85 mi13:33:223:05:367:287:01
8:12
+0:07
25.2M
25.20 mi13:36:263:08:407:293:04
8:54
+0:42
Finish
26.22 mi13:44:323:16:467:318:06
7:57
-0:57

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

6:56 /mi

Average Pace

7:31 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:42

56% of race

Time at Steady Pace

57:10

29% of race

Time at Slower Pace

28:54

15% of race

Average Pace: 7:30 /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 mi10:49:3221:467:0021:46
7:00
#6296
10K
6.21 mi11:11:0643:206:5821:34
6:56
#6356
15K
9.32 mi11:32:581:05:127:0021:52
7:02
#6485
20K
12.43 mi11:55:311:27:457:0422:33
7:15
#6712
Half
13.11 mi12:00:271:32:417:044:56
7:14
#6768
25K
15.53 mi12:18:281:50:427:0818:01
7:26
#6930
30K
18.64 mi12:42:442:14:587:1424:16
7:49
#7243
20M
20.00 mi12:53:372:25:517:1810:53
8:01
#7393
21M
21.00 mi13:02:112:34:257:218:34
8:34
#7546
35K
21.75 mi13:08:012:40:157:225:50
7:48
#7622
23M
23.00 mi13:18:162:50:307:2510:15
8:11
#7792
24M
24.00 mi13:26:212:58:357:268:05
8:05
#7955
40K
24.85 mi13:33:223:05:367:287:01
8:12
#8061
25.2M
25.20 mi13:36:263:08:407:293:04
8:54
#8116
Finish
26.22 mi13:44:323:16:467:318:06
7:57
#8226
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi62965545546812(Top 26%)707(Top 6%)707(Top 14%)
10K6.21 mi3.10 mi6356-60588-34588-346450(Top 24%)629(Top 6%)629(Top 13%)
15K9.32 mi3.11 mi6485-129621-33621-336812(Top 26%)707(Top 6%)707(Top 14%)
20K12.43 mi3.11 mi6712-227679-58679-587509(Top 28%)937(Top 8%)937(Top 19%)
Half13.11 mi0.68 mi6768-56686-7686-78151(Top 31%)1157(Top 10%)1157(Top 24%)
25K15.53 mi2.42 mi6930-162734-48734-488272(Top 31%)1282(Top 11%)1282(Top 26%)
30K18.64 mi3.11 mi7243-313840-106840-1069452(Top 36%)1904(Top 17%)1904(Top 39%)
20M20.00 mi1.36 mi7393-150913-73913-7310330(Top 39%)2376(Top 21%)2376(Top 49%)
21M21.00 mi1.00 mi7546-153991-78991-7810873(Top 41%)2789(Top 24%)2789(Top 57%)
35K21.75 mi0.75 mi7622-761019-281019-2810641(Top 40%)2675(Top 23%)2675(Top 55%)
23M23.00 mi1.25 mi7792-1701108-891108-8911104(Top 42%)3058(Top 27%)3058(Top 63%)
24M24.00 mi1.00 mi7955-1631192-841192-8411826(Top 44%)3488(Top 31%)3488(Top 71%)
40K24.85 mi0.85 mi8061-1061247-551247-5511409(Top 43%)3357(Top 29%)3357(Top 69%)
25.2M25.20 mi0.35 mi8116-551276-291276-2911909(Top 45%)3647(Top 32%)3647(Top 75%)
Finish26.22 mi1.02 mi8226-1101343-671343-6711737(Top 44%)3557(Top 31%)3557(Top 73%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21story building
+97ft-345ft

Overall

6812

Females

707

F18-39

707

5K→10K

3.1 - 6.2 mi

Top 24%
×5story building
+79ft-138ft

Overall

6450

Females

629

F18-39

629

10K→15K

6.2 - 9.3 mi

Top 26%
×3story building
+67ft-78ft

Overall

6812

Females

707

F18-39

707

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7509

Females

937

F18-39

937

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8151

Females

1157

F18-39

1157

Half→25K

13.1 - 15.5 mi

Top 31%
×4story building
+66ft-88ft

Overall

8272

Females

1282

F18-39

1282

25K→30K

15.5 - 18.6 mi

Top 36%
×9story building
+181ft-148ft

Overall

9452

Females

1904

F18-39

1904

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10330

Females

2376

F18-39

2376

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10873

Females

2789

F18-39

2789

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

10641

Females

2675

F18-39

2675

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

11104

Females

3058

F18-39

3058

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

11826

Females

3488

F18-39

3488

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11409

Females

3357

F18-39

3357

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

11909

Females

3647

F18-39

3647

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

11737

Females

3557

F18-39

3557

Passing Analysis

Category:
Athletes Passed
591
Passed By
2521
Net Change
-1930
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6296
5K → 10K159219-60#6296#6356
10K → 15K73202-129#6356#6485
15K → 20K47274-227#6485#6712
20K → Half763-56#6712#6768
Half → 25K40202-162#6768#6930
25K → 30K39352-313#6930#7243
30K → 20M34184-150#7243#7393
20M → 21M27180-153#7393#7546
21M → 35K1995-76#7546#7622
35K → 23M41211-170#7622#7792
23M → 24M31194-163#7792#7955
24M → 40K27133-106#7955#8061
40K → 25.2M2176-55#8061#8116
25.2M → Finish26136-110#8116#8226
TOTALS5912521-1930
📊

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