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BOSTON MARATHON 2023

Katherine Nyholm

Bib: 8590•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 20%
Gender (Female)
#0 / 11423
Top 4%
Division (F18-39)
#0 / 4884
Top 7%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:22
Rank: #5396
Start → 5K
6:53/mi
21:22 split
10K· 6.21 mi
42:57
Rank: #5916 (-520)
5K → 10K
6:57/mi
21:35 split
15K· 9.32 mi
1:04:25
Rank: #5941 (-25)
10K → 15K
6:55/mi
21:28 split
20K· 12.43 mi
1:26:07
Rank: #5911 (+30)
15K → 20K
6:59/mi
21:42 split
Half· 13.11 mi
1:30:47
Rank: #5888 (+23)
20K → Half
6:50/mi
4:40 split
25K· 15.53 mi
1:48:02
Rank: #5938 (-50)
Half → 25K
7:07/mi
17:15 split
30K· 18.64 mi
2:10:36
Rank: #5850 (+88)
25K → 30K
7:16/mi
22:34 split
20M
2:20:22
Rank: #5759 (+91)
30K → 20M
7:11/mi
9:46 split
21M
2:28:03
Rank: #5713 (+46)
20M → 21M
7:41/mi
7:41 split
35K· 21.75 mi
2:33:11
Rank: #5653 (+60)
21M → 35K
6:52/mi
5:08 split
23M
2:42:07
Rank: #5518 (+135)
35K → 23M
7:08/mi
8:56 split
24M
2:49:06
Rank: #5426 (+92)
23M → 24M
6:59/mi
6:59 split
40K· 24.85 mi
2:55:09
Rank: #5321 (+105)
24M → 40K
7:05/mi
6:03 split
25.2M
2:57:49
Rank: #5295 (+26)
40K → 25.2M
7:44/mi
2:40 split
Finish· 26.22 mi
3:04:55
Rank: #5243 (+52)
25.2M → Finish
6:58/mi
7:06 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:47
Pace6:55 /mi
2nd Half
Distance13.11 mi
Time1:34:08
Pace7:11 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:3021:226:5321:22
6:53
-
10K
6.21 mi11:08:0542:576:5521:35
6:57
+0:04
15K
9.32 mi11:29:331:04:256:5521:28
6:55
-0:02
20K
12.43 mi11:51:151:26:076:5621:42
6:59
+0:04
Half
13.11 mi11:55:551:30:476:554:40
6:50
-0:09
25K
15.53 mi12:13:101:48:026:5717:15
7:07
+0:17
30K
18.64 mi12:35:442:10:367:0022:34
7:16
+0:09
20M
20.00 mi12:45:302:20:227:019:46
7:11
-0:05
21M
21.00 mi12:53:112:28:037:037:41
7:41
+0:30
35K
21.75 mi12:58:192:33:117:035:08
6:52
-0:49
23M
23.00 mi13:07:152:42:077:038:56
7:08
+0:16
24M
24.00 mi13:14:142:49:067:036:59
6:59
-0:09
40K
24.85 mi13:20:172:55:097:036:03
7:05
+0:06
25.2M
25.20 mi13:22:572:57:497:032:40
7:44
+0:39
Finish
26.22 mi13:30:033:04:557:037:06
6:58
-0:46

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

6:50 /mi

Average Pace

7:03 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:34

94% of race

Time at Steady Pace

10:21

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:03 /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 mi10:46:3021:226:5321:22
6:53
#5396
10K
6.21 mi11:08:0542:576:5521:35
6:57
#5916
15K
9.32 mi11:29:331:04:256:5521:28
6:55
#5941
20K
12.43 mi11:51:151:26:076:5621:42
6:59
#5911
Half
13.11 mi11:55:551:30:476:554:40
6:50
#5888
25K
15.53 mi12:13:101:48:026:5717:15
7:07
#5938
30K
18.64 mi12:35:442:10:367:0022:34
7:16
#5850
20M
20.00 mi12:45:302:20:227:019:46
7:11
#5759
21M
21.00 mi12:53:112:28:037:037:41
7:41
#5713
35K
21.75 mi12:58:192:33:117:035:08
6:52
#5653
23M
23.00 mi13:07:152:42:077:038:56
7:08
#5518
24M
24.00 mi13:14:142:49:067:036:59
6:59
#5426
40K
24.85 mi13:20:172:55:097:036:03
7:05
#5321
25.2M
25.20 mi13:22:572:57:497:032:40
7:44
#5295
Finish
26.22 mi13:30:033:04:557:037:06
6:58
#5243
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi53964044046034(Top 23%)539(Top 5%)539(Top 11%)
10K6.21 mi3.10 mi5916-520488-84488-846472(Top 24%)633(Top 6%)633(Top 13%)
15K9.32 mi3.11 mi5941-25504-16504-166034(Top 23%)539(Top 5%)539(Top 11%)
20K12.43 mi3.11 mi5911+30499+5499+55898(Top 22%)499(Top 4%)499(Top 10%)
Half13.11 mi0.68 mi5888+23490+9490+95676(Top 21%)451(Top 4%)451(Top 9%)
25K15.53 mi2.42 mi5938-50500-10500-106196(Top 23%)604(Top 5%)604(Top 12%)
30K18.64 mi3.11 mi5850+88495+5495+55847(Top 22%)583(Top 5%)583(Top 12%)
20M20.00 mi1.36 mi5759+91485+10485+105068(Top 19%)470(Top 4%)470(Top 10%)
21M21.00 mi1.00 mi5713+46480+5480+55545(Top 21%)673(Top 6%)673(Top 14%)
35K21.75 mi0.75 mi5653+60470+10470+104612(Top 17%)419(Top 4%)419(Top 9%)
23M23.00 mi1.25 mi5518+135462+8462+84505(Top 17%)416(Top 4%)416(Top 9%)
24M24.00 mi1.00 mi5426+92454+8454+84630(Top 17%)475(Top 4%)475(Top 10%)
40K24.85 mi0.85 mi5321+105448+6448+64279(Top 16%)470(Top 4%)470(Top 10%)
25.2M25.20 mi0.35 mi5295+26449-1449-15092(Top 19%)737(Top 6%)737(Top 15%)
Finish26.22 mi1.02 mi5243+52444+5444+55033(Top 19%)731(Top 6%)731(Top 15%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6034

Females

539

F18-39

539

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6472

Females

633

F18-39

633

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6034

Females

539

F18-39

539

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

5898

Females

499

F18-39

499

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5676

Females

451

F18-39

451

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6196

Females

604

F18-39

604

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

5847

Females

583

F18-39

583

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5068

Females

470

F18-39

470

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5545

Females

673

F18-39

673

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4612

Females

419

F18-39

419

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4505

Females

416

F18-39

416

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4630

Females

475

F18-39

475

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4279

Females

470

F18-39

470

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5092

Females

737

F18-39

737

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

5033

Females

731

F18-39

731

Passing Analysis

Category:
Athletes Passed
1257
Passed By
1104
Net Change
+153
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5396
5K → 10K48568-520#5396#5916
10K → 15K119144-25#5916#5941
15K → 20K11282+30#5941#5911
20K → Half3714+23#5911#5888
Half → 25K57107-50#5888#5938
25K → 30K16274+88#5938#5850
30K → 20M11322+91#5850#5759
20M → 21M7529+46#5759#5713
21M → 35K644+60#5713#5653
35K → 23M14813+135#5653#5518
23M → 24M1019+92#5518#5426
24M → 40K1105+105#5426#5321
40K → 25.2M348+26#5321#5295
25.2M → Finish7725+52#5295#5243
TOTALS12571104+153
📊

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