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BOSTON MARATHON 2023

Karyn Nyholm

Bib: 16020•F

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0:00
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 38%
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
25:35
Rank: #15693
Start → 5K
8:14/mi
25:35 split
10K· 6.21 mi
50:02
Rank: #14759 (+934)
5K → 10K
7:52/mi
24:27 split
15K· 9.32 mi
1:14:29
Rank: #14300 (+459)
10K → 15K
7:52/mi
24:27 split
20K· 12.43 mi
1:39:24
Rank: #14099 (+201)
15K → 20K
8:01/mi
24:55 split
Half· 13.11 mi
1:44:43
Rank: #14011 (+88)
20K → Half
7:48/mi
5:19 split
25K· 15.53 mi
2:04:09
Rank: #13808 (+203)
Half → 25K
8:01/mi
19:26 split
30K· 18.64 mi
2:29:34
Rank: #13468 (+340)
25K → 30K
8:11/mi
25:25 split
20M
2:40:58
Rank: #13410 (+58)
30K → 20M
8:23/mi
11:24 split
21M
2:49:46
Rank: #13335 (+75)
20M → 21M
8:48/mi
8:48 split
35K· 21.75 mi
2:55:41
Rank: #13241 (+94)
21M → 35K
7:55/mi
5:55 split
23M
3:06:22
Rank: #13219 (+22)
35K → 23M
8:32/mi
10:41 split
24M
3:15:17
Rank: #13402 (-183)
23M → 24M
8:55/mi
8:55 split
40K· 24.85 mi
3:24:37
Rank: #13995 (-593)
24M → 40K
10:55/mi
9:20 split
25.2M
3:28:09
Rank: #14091 (-96)
40K → 25.2M
10:15/mi
3:32 split
Finish· 26.22 mi
3:36:47
Rank: #14127 (-36)
25.2M → Finish
8:28/mi
8:38 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:43
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:52:04
Pace8:33 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:5825:358:1425:35
8:14
-
10K
6.21 mi11:41:2550:028:0324:27
7:52
-0:22
15K
9.32 mi12:05:521:14:297:5924:27
7:52
0:00
20K
12.43 mi12:30:471:39:248:0024:55
8:01
+0:09
Half
13.11 mi12:36:061:44:437:595:19
7:48
-0:13
25K
15.53 mi12:55:322:04:098:0019:26
8:01
+0:13
30K
18.64 mi13:20:572:29:348:0125:25
8:11
+0:10
20M
20.00 mi13:32:212:40:588:0311:24
8:23
+0:12
21M
21.00 mi13:41:092:49:468:058:48
8:48
+0:25
35K
21.75 mi13:47:042:55:418:055:55
7:55
-0:53
23M
23.00 mi13:57:453:06:228:0610:41
8:32
+0:37
24M
24.00 mi14:06:403:15:178:088:55
8:55
+0:23
40K
24.85 mi14:16:003:24:378:149:20
10:55
+2:00
25.2M
25.20 mi14:19:323:28:098:163:32
10:15
-0:40
Finish
26.22 mi14:28:103:36:478:168:38
8:28
-1:47

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

7:48 /mi

Average Pace

8:16 /mi

Slowest Pace

10:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:06:12

86% of race

Time at Slower Pace

30:35

14% 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 mi11:16:5825:358:1425:35
8:14
#15693
10K
6.21 mi11:41:2550:028:0324:27
7:52
#14759
15K
9.32 mi12:05:521:14:297:5924:27
7:52
#14300
20K
12.43 mi12:30:471:39:248:0024:55
8:01
#14099
Half
13.11 mi12:36:061:44:437:595:19
7:48
#14011
25K
15.53 mi12:55:322:04:098:0019:26
8:01
#13808
30K
18.64 mi13:20:572:29:348:0125:25
8:11
#13468
20M
20.00 mi13:32:212:40:588:0311:24
8:23
#13410
21M
21.00 mi13:41:092:49:468:058:48
8:48
#13335
35K
21.75 mi13:47:042:55:418:055:55
7:55
#13241
23M
23.00 mi13:57:453:06:228:0610:41
8:32
#13219
24M
24.00 mi14:06:403:15:178:088:55
8:55
#13402
40K
24.85 mi14:16:003:24:378:149:20
10:55
#13995
25.2M
25.20 mi14:19:323:28:098:163:32
10:15
#14091
Finish
26.22 mi14:28:103:36:478:168:38
8:28
#14127
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi156935090509013280(Top 50%)3655(Top 32%)3655(Top 75%)
10K6.21 mi3.10 mi14759+9344501+5894501+58913736(Top 52%)3883(Top 34%)3883(Top 80%)
15K9.32 mi3.11 mi14300+4594234+2674234+26713280(Top 50%)3655(Top 32%)3655(Top 75%)
20K12.43 mi3.11 mi14099+2014146+884146+8813625(Top 51%)3895(Top 34%)3895(Top 80%)
Half13.11 mi0.68 mi14011+884092+544092+5412768(Top 48%)3374(Top 30%)3374(Top 69%)
25K15.53 mi2.42 mi13808+2033995+973995+9712891(Top 48%)3574(Top 31%)3574(Top 73%)
30K18.64 mi3.11 mi13468+3403823+1723823+17212223(Top 46%)3320(Top 29%)3320(Top 68%)
20M20.00 mi1.36 mi13410+583807+163807+1612992(Top 49%)3861(Top 34%)3861(Top 79%)
21M21.00 mi1.00 mi13335+753773+343773+3412290(Top 46%)3567(Top 31%)3567(Top 73%)
35K21.75 mi0.75 mi13241+943737+363737+3611541(Top 43%)3181(Top 28%)3181(Top 65%)
23M23.00 mi1.25 mi13219+223745-83745-813451(Top 51%)4314(Top 38%)4314(Top 88%)
24M24.00 mi1.00 mi13402-1833873-1283873-12816848(Top 63%)6263(Top 55%)6263(Top 128%)
40K24.85 mi0.85 mi13995-5934266-3934266-39322181(Top 83%)9225(Top 81%)9225(Top 189%)
25.2M25.20 mi0.35 mi14091-964334-684334-6818279(Top 69%)7088(Top 62%)7088(Top 145%)
Finish26.22 mi1.02 mi14127-364376-424376-4215253(Top 57%)5396(Top 47%)5396(Top 110%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

13280

Females

3655

F18-39

3655

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

13736

Females

3883

F18-39

3883

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

13280

Females

3655

F18-39

3655

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

13625

Females

3895

F18-39

3895

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

12768

Females

3374

F18-39

3374

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

12891

Females

3574

F18-39

3574

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

12223

Females

3320

F18-39

3320

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

12992

Females

3861

F18-39

3861

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

12290

Females

3567

F18-39

3567

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

11541

Females

3181

F18-39

3181

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13451

Females

4314

F18-39

4314

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

16848

Females

6263

F18-39

6263

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

22181

Females

9225

F18-39

9225

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

18279

Females

7088

F18-39

7088

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15253

Females

5396

F18-39

5396

Passing Analysis

Category:
Athletes Passed
3023
Passed By
1457
Net Change
+1566
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15693
5K → 10K98955+934#15693#14759
10K → 15K50041+459#14759#14300
15K → 20K28281+201#14300#14099
20K → Half957+88#14099#14011
Half → 25K24037+203#14011#13808
25K → 30K38343+340#13808#13468
30K → 20M11052+58#13468#13410
20M → 21M12550+75#13410#13335
21M → 35K10713+94#13335#13241
35K → 23M10482+22#13241#13219
23M → 24M29212-183#13219#13402
24M → 40K5598-593#13402#13995
40K → 25.2M11107-96#13995#14091
25.2M → Finish4379-36#14091#14127
TOTALS30231457+1566
📊

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