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BOSTON MARATHON 2023

Kelsey Primis

Bib: 27150•F

GA

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
28:38
Rank: #21262
Start → 5K
28:38 | 9:13/mi
10K· 6.21 mi
54:27
Rank: #19475 (+1787)
5K → 10K
25:49 | 8:19/mi
15K· 9.32 mi
1:20:05
Rank: #18440 (+1035)
10K → 15K
25:38 | 8:15/mi
20K· 12.43 mi
1:46:05
Rank: #17802 (+638)
15K → 20K
26:00 | 8:22/mi
Half· 13.11 mi
1:51:48
Rank: #17736 (+66)
20K → Half
5:43 | 8:23/mi
25K· 15.53 mi
2:12:37
Rank: #17559 (+177)
Half → 25K
20:49 | 8:35/mi
30K· 18.64 mi
2:39:55
Rank: #17235 (+324)
25K → 30K
27:18 | 8:47/mi
20M
2:52:00
Rank: #17136 (+99)
30K → 20M
12:05 | 8:54/mi
21M
3:02:25
Rank: #17303 (-167)
20M → 21M
10:25 | 10:25/mi
35K· 21.75 mi
3:08:50
Rank: #17241 (+62)
21M → 35K
6:25 | 8:35/mi
23M
3:19:59
Rank: #17139 (+102)
35K → 23M
11:09 | 8:54/mi
24M
3:28:46
Rank: #17083 (+56)
23M → 24M
8:47 | 8:47/mi
40K· 24.85 mi
3:36:59
Rank: #17171 (-88)
24M → 40K
8:13 | 9:37/mi
25.2M
3:40:24
Rank: #17185 (-14)
40K → 25.2M
3:25 | 9:54/mi
Finish· 26.22 mi
3:49:35
Rank: #17253 (-68)
25.2M → Finish
9:11 | 9:01/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:48
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time1:57:47
Pace8:59 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:2328:389:1328:38
9:13
-
10K
6.21 mi12:15:1254:278:4625:49
8:19
-0:54
15K
9.32 mi12:40:501:20:058:3625:38
8:15
-0:04
20K
12.43 mi13:06:501:46:058:3226:00
8:22
+0:07
Half
13.11 mi13:12:331:51:488:325:43
8:23
+0:01
25K
15.53 mi13:33:222:12:378:3220:49
8:35
+0:12
30K
18.64 mi14:00:402:39:558:3527:18
8:47
+0:12
20M
20.00 mi14:12:452:52:008:3612:05
8:54
+0:07
21M
21.00 mi14:23:103:02:258:4110:25
10:25
+1:31
35K
21.75 mi14:29:353:08:508:416:25
8:35
-1:50
23M
23.00 mi14:40:443:19:598:4211:09
8:54
+0:19
24M
24.00 mi14:49:313:28:468:428:47
8:47
-0:07
40K
24.85 mi14:57:443:36:598:448:13
9:37
+0:50
25.2M
25.20 mi15:01:093:40:248:453:25
9:54
+0:17
Finish
26.22 mi15:10:203:49:358:469:11
9:01
-0:53

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

8:15 /mi

Average Pace

8:46 /mi

Slowest Pace

10:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:10

36% of race

Time at Steady Pace

1:35:44

42% of race

Time at Slower Pace

50:41

22% of race

Average Pace: 8:45 /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 mi11:49:2328:389:1328:38
9:13
#21262
10K
6.21 mi12:15:1254:278:4625:49
8:19
#19475
15K
9.32 mi12:40:501:20:058:3625:38
8:15
#18440
20K
12.43 mi13:06:501:46:058:3226:00
8:22
#17802
Half
13.11 mi13:12:331:51:488:325:43
8:23
#17736
25K
15.53 mi13:33:222:12:378:3220:49
8:35
#17559
30K
18.64 mi14:00:402:39:558:3527:18
8:47
#17235
20M
20.00 mi14:12:452:52:008:3612:05
8:54
#17136
21M
21.00 mi14:23:103:02:258:4110:25
10:25
#17303
35K
21.75 mi14:29:353:08:508:416:25
8:35
#17241
23M
23.00 mi14:40:443:19:598:4211:09
8:54
#17139
24M
24.00 mi14:49:313:28:468:428:47
8:47
#17083
40K
24.85 mi14:57:443:36:598:448:13
9:37
#17171
25.2M
25.20 mi15:01:093:40:248:453:25
9:54
#17185
Finish
26.22 mi15:10:203:49:358:469:11
9:01
#17253
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi212628505850516239(Top 61%)5435(Top 48%)5435(Top 111%)
10K6.21 mi3.10 mi19475+17877446+10597446+105917009(Top 64%)5879(Top 51%)5879(Top 120%)
15K9.32 mi3.11 mi18440+10356774+6726774+67216239(Top 61%)5435(Top 48%)5435(Top 111%)
20K12.43 mi3.11 mi17802+6386405+3696405+36916064(Top 60%)5392(Top 47%)5392(Top 110%)
Half13.11 mi0.68 mi17736+666369+366369+3617058(Top 64%)5937(Top 52%)5937(Top 122%)
25K15.53 mi2.42 mi17559+1776270+996270+9916749(Top 63%)5869(Top 51%)5869(Top 120%)
30K18.64 mi3.11 mi17235+3246100+1706100+17015988(Top 60%)5493(Top 48%)5493(Top 112%)
20M20.00 mi1.36 mi17136+996058+426058+4215994(Top 60%)5576(Top 49%)5576(Top 114%)
21M21.00 mi1.00 mi17303-1676178-1206178-12019313(Top 73%)7521(Top 66%)7521(Top 154%)
35K21.75 mi0.75 mi17241+626149+296149+2915779(Top 59%)5574(Top 49%)5574(Top 114%)
23M23.00 mi1.25 mi17139+1026099+506099+5015593(Top 59%)5512(Top 48%)5512(Top 113%)
24M24.00 mi1.00 mi17083+566093+66093+616133(Top 61%)5883(Top 52%)5883(Top 120%)
40K24.85 mi0.85 mi17171-886156-636156-6318728(Top 70%)7337(Top 64%)7337(Top 150%)
25.2M25.20 mi0.35 mi17185-146167-116167-1117063(Top 64%)6455(Top 57%)6455(Top 132%)
Finish26.22 mi1.02 mi17253-686216-496216-4918048(Top 68%)6929(Top 61%)6929(Top 142%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

16239

Females

5435

F18-39

5435

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

17009

Females

5879

F18-39

5879

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

16239

Females

5435

F18-39

5435

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

16064

Females

5392

F18-39

5392

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

17058

Females

5937

F18-39

5937

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

16749

Females

5869

F18-39

5869

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

15988

Females

5493

F18-39

5493

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

15994

Females

5576

F18-39

5576

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

19313

Females

7521

F18-39

7521

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

15779

Females

5574

F18-39

5574

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

15593

Females

5512

F18-39

5512

23M→24M

23.0 - 24.0 mi

Top 61%
×6stories
+12ft-82ft

Overall

16133

Females

5883

F18-39

5883

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18728

Females

7337

F18-39

7337

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

17063

Females

6455

F18-39

6455

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2stories
+22ft-21ft

Overall

18048

Females

6929

F18-39

6929

Passing Analysis

Category:
Athletes Passed
4700
Passed By
691
Net Change
+4009
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21262
5K → 10K17947+1787#21262#19475
10K → 15K104712+1035#19475#18440
15K → 20K6479+638#18440#17802
20K → Half737+66#17802#17736
Half → 25K21538+177#17736#17559
25K → 30K35228+324#17559#17235
30K → 20M13132+99#17235#17136
20M → 21M43210-167#17136#17303
21M → 35K8018+62#17303#17241
35K → 23M13533+102#17241#17139
23M → 24M9236+56#17139#17083
24M → 40K32120-88#17083#17171
40K → 25.2M2034-14#17171#17185
25.2M → Finish39107-68#17185#17253
TOTALS4700691+4009
📊

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