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BOSTON MARATHON 2023

Katherine Corliss

Bib: 25060•F

CT

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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:43/mi
33:18
↑ 97↓ 3451.5%
10K· 6.21 mi
10:52/mi
1:07:03
↑ 79↓ 1380.4%
15K· 9.32 mi
10:51/mi
1:40:45
↑ 67↓ 78
20K· 12.43 mi
10:53/mi
2:14:33
↑ 106↓ 860.1%
Half· 13.11 mi
10:48/mi
2:21:55
↑ 19↓ 370.5%
25K· 15.53 mi
11:33/mi
2:49:55
↑ 66↓ 880.2%
30K· 18.64 mi
12:47/mi
3:29:39
↑ 181↓ 1480.2%
20M
12:50/mi
3:47:05
↑ 64↓ 500.2%
21M
13:30/mi
4:00:35
↑ 106↓ 241.6%
35K· 21.75 mi
13:01/mi
4:10:19
↑ 17↓ 861.7%
23M
12:40/mi
4:26:11
↑ 23↓ 630.6%
24M
11:56/mi
4:38:07
↓ 821.3%
40K· 24.85 mi
12:20/mi
4:48:40
↓ 200.3%
25.2M
12:40/mi
4:53:02
↑ 13↓ 160.2%
Finish· 26.22 mi
10:58/mi
5:04:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:21:55
Pace10:50 /mi
2nd Half
Distance13.11 mi
Time2:42:18
Pace12:23 /mi
📊Positive Split: 14.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:0733:1810:4333:18
10:43
-
10K
6.21 mi12:29:521:07:0310:4733:45
10:52
+0:09
15K
9.32 mi13:03:341:40:4510:4933:42
10:51
-0:01
20K
12.43 mi13:37:222:14:3310:5033:48
10:53
+0:02
Half
13.11 mi13:44:442:21:5510:507:22
10:48
-0:05
25K
15.53 mi14:12:442:49:5510:5628:00
11:33
+0:45
30K
18.64 mi14:52:283:29:3911:1539:44
12:47
+1:14
20M
20.00 mi15:09:543:47:0511:2117:26
12:50
+0:03
21M
21.00 mi15:23:244:00:3511:2713:30
13:30
+0:40
35K
21.75 mi15:33:084:10:1911:319:44
13:01
-0:29
23M
23.00 mi15:49:004:26:1111:3415:52
12:40
-0:21
24M
24.00 mi16:00:564:38:0711:3511:56
11:56
-0:44
40K
24.85 mi16:11:294:48:4011:3710:33
12:20
+0:24
25.2M
25.20 mi16:15:514:53:0211:384:22
12:40
+0:20
Finish
26.22 mi16:27:025:04:1311:3711:11
10:58
-1:42

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

10:43 /mi

Average Pace

11:37 /mi

Slowest Pace

13:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:06

50% of race

Time at Steady Pace

50:29

17% of race

Time at Slower Pace

1:40:38

33% of race

Average Pace: 11:36 /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 mi11:56:0733:1810:4333:18
10:43
#25235
10K
6.21 mi12:29:521:07:0310:4733:45
10:52
#25254
15K
9.32 mi13:03:341:40:4510:4933:42
10:51
#25154
20K
12.43 mi13:37:222:14:3310:5033:48
10:53
#24954
Half
13.11 mi13:44:442:21:5510:507:22
10:48
#24943
25K
15.53 mi14:12:442:49:5510:5628:00
11:33
#24913
30K
18.64 mi14:52:283:29:3911:1539:44
12:47
#25032
20M
20.00 mi15:09:543:47:0511:2117:26
12:50
#25038
21M
21.00 mi15:23:244:00:3511:2713:30
13:30
#25045
35K
21.75 mi15:33:084:10:1911:319:44
13:01
#25074
23M
23.00 mi15:49:004:26:1111:3415:52
12:40
#25076
24M
24.00 mi16:00:564:38:0711:3511:56
11:56
#25071
40K
24.85 mi16:11:294:48:4011:3710:33
12:20
#25059
25.2M
25.20 mi16:15:514:53:0211:384:22
12:40
#25039
Finish
26.22 mi16:27:025:04:1311:3711:11
10:58
#25013
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25235105681056825007(Top 94%)10466(Top 92%)10466(Top 214%)
10K6.21 mi3.10 mi25254-1910575-710575-725289(Top 95%)10603(Top 93%)10603(Top 217%)
15K9.32 mi3.11 mi25154+10010528+4710528+4725007(Top 94%)10466(Top 92%)10466(Top 214%)
20K12.43 mi3.11 mi24954+20010432+9610432+9624449(Top 92%)10178(Top 89%)10178(Top 208%)
Half13.11 mi0.68 mi24943+1110426+610426+624684(Top 93%)10311(Top 90%)10311(Top 211%)
25K15.53 mi2.42 mi24913+3010420+610420+624733(Top 93%)10361(Top 91%)10361(Top 212%)
30K18.64 mi3.11 mi25032-11910502-8210502-8225243(Top 95%)10705(Top 94%)10705(Top 219%)
20M20.00 mi1.36 mi25038-610519-1710519-1725030(Top 94%)10615(Top 93%)10615(Top 217%)
21M21.00 mi1.00 mi25045-710529-1010529-1024589(Top 92%)10392(Top 91%)10392(Top 213%)
35K21.75 mi0.75 mi25074-2910558-2910558-2925566(Top 96%)10927(Top 96%)10927(Top 224%)
23M23.00 mi1.25 mi25076-210565-710565-724772(Top 93%)10518(Top 92%)10518(Top 215%)
24M24.00 mi1.00 mi25071+510566-110566-124439(Top 92%)10400(Top 91%)10400(Top 213%)
40K24.85 mi0.85 mi25059+1210565+110565+124276(Top 91%)10323(Top 90%)10323(Top 211%)
25.2M25.20 mi0.35 mi25039+2010555+1010555+1023566(Top 89%)9972(Top 87%)9972(Top 204%)
Finish26.22 mi1.02 mi25013+2610547+810547+823936(Top 90%)10132(Top 89%)10132(Top 207%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21story building
+97ft-345ft

Overall

25007

Females

10466

F18-39

10466

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

25289

Females

10603

F18-39

10603

10K→15K

6.2 - 9.3 mi

Top 94%
×3story building
+67ft-78ft

Overall

25007

Females

10466

F18-39

10466

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

24449

Females

10178

F18-39

10178

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

24684

Females

10311

F18-39

10311

Half→25K

13.1 - 15.5 mi

Top 93%
×4story building
+66ft-88ft

Overall

24733

Females

10361

F18-39

10361

25K→30K

15.5 - 18.6 mi

Top 95%
×9story building
+181ft-148ft

Overall

25243

Females

10705

F18-39

10705

30K→20M

18.6 - 20.0 mi

Top 94%
×5story building
+64ft-50ft

Overall

25030

Females

10615

F18-39

10615

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

24589

Females

10392

F18-39

10392

21M→35K

21.0 - 21.8 mi

Top 96%
×7story building
+17ft-86ft

Overall

25566

Females

10927

F18-39

10927

35K→23M

21.8 - 23.0 mi

Top 93%
×5story building
+23ft-63ft

Overall

24772

Females

10518

F18-39

10518

23M→24M

23.0 - 24.0 mi

Top 92%
×6story building
+12ft-82ft

Overall

24439

Females

10400

F18-39

10400

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

24276

Females

10323

F18-39

10323

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1story
+13ft-16ft

Overall

23566

Females

9972

F18-39

9972

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2story building
+22ft-21ft

Overall

23936

Females

10132

F18-39

10132

Passing Analysis

Category:
Athletes Passed
912
Passed By
690
Net Change
+222
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25235
5K → 10K155174-19#25235#25254
10K → 15K15858+100#25254#25154
15K → 20K22626+200#25154#24954
20K → Half209+11#24954#24943
Half → 25K8555+30#24943#24913
25K → 30K51170-119#24913#25032
30K → 20M4248-6#25032#25038
20M → 21M2936-7#25038#25045
21M → 35K1847-29#25045#25074
35K → 23M2729-2#25074#25076
23M → 24M2217+5#25076#25071
24M → 40K2917+12#25071#25059
40K → 25.2M200+20#25059#25039
25.2M → Finish304+26#25039#25013
TOTALS912690+222
📊

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