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BOSTON MARATHON 2023

Katherine Nehring

Bib: 27873•F

NY

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
9:22/mi
29:06
↑ 97↓ 3451.5%
10K· 6.21 mi
8:51/mi
56:35
↑ 79↓ 1380.4%
15K· 9.32 mi
8:47/mi
1:23:52
↑ 67↓ 78
20K· 12.43 mi
8:49/mi
1:51:16
↑ 106↓ 860.1%
Half· 13.11 mi
8:42/mi
1:57:12
↑ 19↓ 370.5%
25K· 15.53 mi
8:55/mi
2:18:48
↑ 66↓ 880.2%
30K· 18.64 mi
9:10/mi
2:47:18
↑ 181↓ 1480.2%
20M
9:19/mi
2:59:58
↑ 64↓ 500.2%
21M
9:51/mi
3:09:49
↑ 106↓ 241.6%
35K· 21.75 mi
8:47/mi
3:16:23
↑ 17↓ 861.7%
23M
9:06/mi
3:27:47
↑ 23↓ 630.6%
24M
8:58/mi
3:36:45
↓ 821.3%
40K· 24.85 mi
9:07/mi
3:44:33
↓ 200.3%
25.2M
9:54/mi
3:47:58
↑ 13↓ 160.2%
Finish· 26.22 mi
8:45/mi
3:56:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:12
Pace8:56 /mi
2nd Half
Distance13.11 mi
Time1:59:41
Pace9:08 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:4129:069:2229:06
9:22
-
10K
6.21 mi12:17:1056:359:0627:29
8:51
-0:31
15K
9.32 mi12:44:271:23:529:0027:17
8:47
-0:04
20K
12.43 mi13:11:511:51:168:5727:24
8:49
+0:02
Half
13.11 mi13:17:471:57:128:565:56
8:42
-0:07
25K
15.53 mi13:39:232:18:488:5621:36
8:55
+0:13
30K
18.64 mi14:07:532:47:188:5828:30
9:10
+0:15
20M
20.00 mi14:20:332:59:589:0012:40
9:19
+0:09
21M
21.00 mi14:30:243:09:499:029:51
9:51
+0:32
35K
21.75 mi14:36:583:16:239:026:34
8:47
-1:04
23M
23.00 mi14:48:223:27:479:0211:24
9:06
+0:19
24M
24.00 mi14:57:203:36:459:028:58
8:58
-0:08
40K
24.85 mi15:05:083:44:339:027:48
9:07
+0:09
25.2M
25.20 mi15:08:333:47:589:033:25
9:54
+0:47
Finish
26.22 mi15:17:283:56:539:028:55
8:45
-1:09

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

8:42 /mi

Average Pace

9:02 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:43:37

94% of race

Time at Steady Pace

13:16

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:02 /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 mi11:49:4129:069:2229:06
9:22
#21709
10K
6.21 mi12:17:1056:359:0627:29
8:51
#21084
15K
9.32 mi12:44:271:23:529:0027:17
8:47
#20562
20K
12.43 mi13:11:511:51:168:5727:24
8:49
#20128
Half
13.11 mi13:17:471:57:128:565:56
8:42
#20083
25K
15.53 mi13:39:232:18:488:5621:36
8:55
#19808
30K
18.64 mi14:07:532:47:188:5828:30
9:10
#19473
20M
20.00 mi14:20:332:59:589:0012:40
9:19
#19358
21M
21.00 mi14:30:243:09:499:029:51
9:51
#19221
35K
21.75 mi14:36:583:16:239:026:34
8:47
#19154
23M
23.00 mi14:48:223:27:479:0211:24
9:06
#18999
24M
24.00 mi14:57:203:36:459:028:58
8:58
#18911
40K
24.85 mi15:05:083:44:339:027:48
9:07
#18824
25.2M
25.20 mi15:08:333:47:589:033:25
9:54
#18799
Finish
26.22 mi15:17:283:56:539:028:55
8:45
#18754
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi217098744874419411(Top 73%)7336(Top 64%)7336(Top 150%)
10K6.21 mi3.10 mi21084+6258358+3868358+38620167(Top 76%)7797(Top 68%)7797(Top 160%)
15K9.32 mi3.11 mi20562+5228054+3048054+30419411(Top 73%)7336(Top 64%)7336(Top 150%)
20K12.43 mi3.11 mi20128+4347786+2687786+26818794(Top 71%)6963(Top 61%)6963(Top 143%)
Half13.11 mi0.68 mi20083+457762+247762+2418975(Top 71%)7074(Top 62%)7074(Top 145%)
25K15.53 mi2.42 mi19808+2757612+1507612+15018517(Top 70%)6860(Top 60%)6860(Top 140%)
30K18.64 mi3.11 mi19473+3357411+2017411+20118052(Top 68%)6684(Top 59%)6684(Top 137%)
20M20.00 mi1.36 mi19358+1157360+517360+5118122(Top 68%)6808(Top 60%)6808(Top 139%)
21M21.00 mi1.00 mi19221+1377294+667294+6617470(Top 66%)6472(Top 57%)6472(Top 133%)
35K21.75 mi0.75 mi19154+677265+297265+2916871(Top 63%)6215(Top 54%)6215(Top 127%)
23M23.00 mi1.25 mi18999+1557183+827183+8216594(Top 62%)6083(Top 53%)6083(Top 125%)
24M24.00 mi1.00 mi18911+887144+397144+3917110(Top 64%)6427(Top 56%)6427(Top 132%)
40K24.85 mi0.85 mi18824+877108+367108+3616769(Top 63%)6281(Top 55%)6281(Top 129%)
25.2M25.20 mi0.35 mi18799+257105+37105+317082(Top 64%)6474(Top 57%)6474(Top 133%)
Finish26.22 mi1.02 mi18754+457081+247081+2416801(Top 63%)6264(Top 55%)6264(Top 128%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

19411

Females

7336

F18-39

7336

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

20167

Females

7797

F18-39

7797

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

19411

Females

7336

F18-39

7336

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

18794

Females

6963

F18-39

6963

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

18975

Females

7074

F18-39

7074

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18517

Females

6860

F18-39

6860

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

18052

Females

6684

F18-39

6684

30K→20M

18.6 - 20.0 mi

Top 68%
×5story building
+64ft-50ft

Overall

18122

Females

6808

F18-39

6808

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17470

Females

6472

F18-39

6472

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16871

Females

6215

F18-39

6215

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

16594

Females

6083

F18-39

6083

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

17110

Females

6427

F18-39

6427

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16769

Females

6281

F18-39

6281

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

17082

Females

6474

F18-39

6474

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

16801

Females

6264

F18-39

6264

Passing Analysis

Category:
Athletes Passed
3284
Passed By
329
Net Change
+2955
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21709
5K → 10K69772+625#21709#21084
10K → 15K55129+522#21084#20562
15K → 20K45521+434#20562#20128
20K → Half5712+45#20128#20083
Half → 25K29823+275#20083#19808
25K → 30K36833+335#19808#19473
30K → 20M14025+115#19473#19358
20M → 21M15518+137#19358#19221
21M → 35K7912+67#19221#19154
35K → 23M16914+155#19154#18999
23M → 24M10618+88#18999#18911
24M → 40K9912+87#18911#18824
40K → 25.2M3611+25#18824#18799
25.2M → Finish7429+45#18799#18754
TOTALS3284329+2955
📊

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