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BOSTON MARATHON 2023

Katarina Nichols

Bib: 16720•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 42%
Gender (Female)
#0 / 11423
Top 24%
Division (F18-39)
#0 / 4884
Top 40%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:32
Rank: #10314
Start → 5K
23:32 | 7:34/mi
10K· 6.21 mi
47:09
Rank: #10829 (-515)
5K → 10K
23:37 | 7:36/mi
15K· 9.32 mi
1:11:07
Rank: #11198 (-369)
10K → 15K
23:58 | 7:43/mi
20K· 12.43 mi
1:35:19
Rank: #11264 (-66)
15K → 20K
24:12 | 7:47/mi
Half· 13.11 mi
1:40:26
Rank: #11206 (+58)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:59:13
Rank: #11100 (+106)
Half → 25K
18:47 | 7:45/mi
30K· 18.64 mi
2:24:02
Rank: #10978 (+122)
25K → 30K
24:49 | 7:59/mi
20M
2:34:59
Rank: #10921 (+57)
30K → 20M
10:57 | 8:03/mi
21M
2:43:33
Rank: #10914 (+7)
20M → 21M
8:34 | 8:34/mi
35K· 21.75 mi
2:49:33
Rank: #10942 (-28)
21M → 35K
6:00 | 8:01/mi
23M
2:59:59
Rank: #10995 (-53)
35K → 23M
10:26 | 8:20/mi
24M
3:08:12
Rank: #11093 (-98)
23M → 24M
8:13 | 8:13/mi
40K· 24.85 mi
3:15:25
Rank: #11141 (-48)
24M → 40K
7:13 | 8:26/mi
25.2M
3:18:29
Rank: #11145 (-4)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:26:46
Rank: #11220 (-75)
25.2M → Finish
8:17 | 8:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:26
Pace7:40 /mi
2nd Half
Distance13.11 mi
Time1:46:20
Pace8:07 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:4723:327:3423:32
7:34
-
10K
6.21 mi11:37:2447:097:3523:37
7:36
+0:02
15K
9.32 mi12:01:221:11:077:3823:58
7:43
+0:07
20K
12.43 mi12:25:341:35:197:4024:12
7:47
+0:04
Half
13.11 mi12:30:411:40:267:405:07
7:30
-0:17
25K
15.53 mi12:49:281:59:137:4018:47
7:45
+0:15
30K
18.64 mi13:14:172:24:027:4424:49
7:59
+0:14
20M
20.00 mi13:25:142:34:597:4510:57
8:03
+0:04
21M
21.00 mi13:33:482:43:337:478:34
8:34
+0:31
35K
21.75 mi13:39:482:49:337:486:00
8:01
-0:33
23M
23.00 mi13:50:142:59:597:5010:26
8:20
+0:19
24M
24.00 mi13:58:273:08:127:518:13
8:13
-0:07
40K
24.85 mi14:05:403:15:257:527:13
8:26
+0:13
25.2M
25.20 mi14:08:443:18:297:533:04
8:54
+0:28
Finish
26.22 mi14:17:013:26:467:548:17
8:08
-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

7:30 /mi

Average Pace

7:54 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:57:29

86% of race

Time at Steady Pace

26:13

13% of race

Time at Slower Pace

3:04

1% of race

Average Pace: 7:53 /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 mi11:13:4723:327:3423:32
7:34
#10314
10K
6.21 mi11:37:2447:097:3523:37
7:36
#10829
15K
9.32 mi12:01:221:11:077:3823:58
7:43
#11198
20K
12.43 mi12:25:341:35:197:4024:12
7:47
#11264
Half
13.11 mi12:30:411:40:267:405:07
7:30
#11206
25K
15.53 mi12:49:281:59:137:4018:47
7:45
#11100
30K
18.64 mi13:14:172:24:027:4424:49
7:59
#10978
20M
20.00 mi13:25:142:34:597:4510:57
8:03
#10921
21M
21.00 mi13:33:482:43:337:478:34
8:34
#10914
35K
21.75 mi13:39:482:49:337:486:00
8:01
#10942
23M
23.00 mi13:50:142:59:597:5010:26
8:20
#10995
24M
24.00 mi13:58:273:08:127:518:13
8:13
#11093
40K
24.85 mi14:05:403:15:257:527:13
8:26
#11141
25.2M
25.20 mi14:08:443:18:297:533:04
8:54
#11145
Finish
26.22 mi14:17:013:26:467:548:17
8:08
#11220
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi103142006200611974(Top 45%)2885(Top 25%)2885(Top 59%)
10K6.21 mi3.10 mi10829-5152241-2352241-23511361(Top 43%)2529(Top 22%)2529(Top 52%)
15K9.32 mi3.11 mi11198-3692438-1972438-19711974(Top 45%)2885(Top 25%)2885(Top 59%)
20K12.43 mi3.11 mi11264-662480-422480-4211660(Top 44%)2771(Top 24%)2771(Top 57%)
Half13.11 mi0.68 mi11206+582444+362444+3610316(Top 39%)2049(Top 18%)2049(Top 42%)
25K15.53 mi2.42 mi11100+1062412+322412+3210698(Top 40%)2340(Top 20%)2340(Top 48%)
30K18.64 mi3.11 mi10978+1222392+202392+2010812(Top 41%)2550(Top 22%)2550(Top 52%)
20M20.00 mi1.36 mi10921+572392239210734(Top 40%)2602(Top 23%)2602(Top 53%)
21M21.00 mi1.00 mi10914+72419-272419-2710895(Top 41%)2811(Top 25%)2811(Top 58%)
35K21.75 mi0.75 mi10942-282446-272446-2712284(Top 46%)3575(Top 31%)3575(Top 73%)
23M23.00 mi1.25 mi10995-532496-502496-5012134(Top 46%)3584(Top 31%)3584(Top 73%)
24M24.00 mi1.00 mi11093-982572-762572-7612733(Top 48%)3973(Top 35%)3973(Top 81%)
40K24.85 mi0.85 mi11141-482621-492621-4912981(Top 49%)4185(Top 37%)4185(Top 86%)
25.2M25.20 mi0.35 mi11145-42637-162637-1611935(Top 45%)3673(Top 32%)3673(Top 75%)
Finish26.22 mi1.02 mi11220-752703-662703-6612983(Top 49%)4199(Top 37%)4199(Top 86%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21stories
+97ft-345ft

Overall

11974

Females

2885

F18-39

2885

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

11361

Females

2529

F18-39

2529

10K→15K

6.2 - 9.3 mi

Top 45%
×3stories
+67ft-78ft

Overall

11974

Females

2885

F18-39

2885

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11660

Females

2771

F18-39

2771

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10316

Females

2049

F18-39

2049

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

10698

Females

2340

F18-39

2340

25K→30K

15.5 - 18.6 mi

Top 41%
×9stories
+181ft-148ft

Overall

10812

Females

2550

F18-39

2550

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

10734

Females

2602

F18-39

2602

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

10895

Females

2811

F18-39

2811

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12284

Females

3575

F18-39

3575

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12134

Females

3584

F18-39

3584

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

12733

Females

3973

F18-39

3973

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

12981

Females

4185

F18-39

4185

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

11935

Females

3673

F18-39

3673

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2stories
+22ft-21ft

Overall

12983

Females

4199

F18-39

4199

Passing Analysis

Category:
Athletes Passed
1286*
Passed By
2192
Net Change
-906
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10314
5K → 10K120635-515#10314#10829
10K → 15K81450-369#10829#11198
15K → 20K142208-66#11198#11264
20K → Half646+58#11264#11206
Half → 25K17872+106#11206#11100
25K → 30K222100+122#11100#10978
30K → 20M118*61+57#10978#10921
20M → 21M7770+7#10921#10914
21M → 35K3967-28#10914#10942
35K → 23M72125-53#10942#10995
23M → 24M42140-98#10995#11093
24M → 40K5098-48#11093#11141
40K → 25.2M3438-4#11141#11145
25.2M → Finish47122-75#11145#11220
TOTALS1286*2192-906

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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