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BOSTON MARATHON 2023

Isabel Norris

Bib: 11693•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 17%
Division (F18-39)
#0 / 4884
Top 31%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:38
Rank: #8039
Start → 5K
22:38 | 7:17/mi
10K· 6.21 mi
45:11
Rank: #8272 (-233)
5K → 10K
22:33 | 7:15/mi
15K· 9.32 mi
1:07:57
Rank: #8394 (-122)
10K → 15K
22:46 | 7:20/mi
20K· 12.43 mi
1:31:27
Rank: #8692 (-298)
15K → 20K
23:30 | 7:34/mi
Half· 13.11 mi
1:36:30
Rank: #8716 (-24)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:55:04
Rank: #8888 (-172)
Half → 25K
18:34 | 7:39/mi
30K· 18.64 mi
2:19:33
Rank: #9062 (-174)
25K → 30K
24:29 | 7:53/mi
20M
2:30:43
Rank: #9245 (-183)
30K → 20M
11:10 | 8:13/mi
21M
2:39:22
Rank: #9338 (-93)
20M → 21M
8:39 | 8:39/mi
35K· 21.75 mi
2:44:55
Rank: #9266 (+72)
21M → 35K
5:33 | 7:25/mi
23M
2:54:55
Rank: #9258 (+8)
35K → 23M
10:00 | 7:59/mi
24M
3:02:58
Rank: #9328 (-70)
23M → 24M
8:03 | 8:03/mi
40K· 24.85 mi
3:10:19
Rank: #9499 (-171)
24M → 40K
7:21 | 8:36/mi
25.2M
3:13:38
Rank: #9590 (-91)
40K → 25.2M
3:19 | 9:37/mi
Finish· 26.22 mi
3:21:56
Rank: #9705 (-115)
25.2M → Finish
8:18 | 8:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:30
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:45:26
Pace8:03 /mi
📊Positive Split: 9.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:2322:387:1722:38
7:17
-
10K
6.21 mi11:11:5645:117:1622:33
7:15
-0:02
15K
9.32 mi11:34:421:07:577:1722:46
7:20
+0:05
20K
12.43 mi11:58:121:31:277:2223:30
7:34
+0:14
Half
13.11 mi12:03:151:36:307:225:03
7:24
-0:10
25K
15.53 mi12:21:491:55:047:2418:34
7:39
+0:15
30K
18.64 mi12:46:182:19:337:2924:29
7:53
+0:14
20M
20.00 mi12:57:282:30:437:3211:10
8:13
+0:20
21M
21.00 mi13:06:072:39:227:358:39
8:39
+0:26
35K
21.75 mi13:11:402:44:557:355:33
7:25
-1:14
23M
23.00 mi13:21:402:54:557:3610:00
7:59
+0:34
24M
24.00 mi13:29:433:02:587:378:03
8:03
+0:04
40K
24.85 mi13:37:043:10:197:397:21
8:36
+0:33
25.2M
25.20 mi13:40:233:13:387:413:19
9:37
+1:01
Finish
26.22 mi13:48:413:21:567:428:18
8:09
-1:28

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

7:15 /mi

Average Pace

7:42 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:03

51% of race

Time at Steady Pace

1:09:24

34% of race

Time at Slower Pace

30:29

15% of race

Average Pace: 7:42 /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 mi10:49:2322:387:1722:38
7:17
#8039
10K
6.21 mi11:11:5645:117:1622:33
7:15
#8272
15K
9.32 mi11:34:421:07:577:1722:46
7:20
#8394
20K
12.43 mi11:58:121:31:277:2223:30
7:34
#8692
Half
13.11 mi12:03:151:36:307:225:03
7:24
#8716
25K
15.53 mi12:21:491:55:047:2418:34
7:39
#8888
30K
18.64 mi12:46:182:19:337:2924:29
7:53
#9062
20M
20.00 mi12:57:282:30:437:3211:10
8:13
#9245
21M
21.00 mi13:06:072:39:227:358:39
8:39
#9338
35K
21.75 mi13:11:402:44:557:355:33
7:25
#9266
23M
23.00 mi13:21:402:54:557:3610:00
7:59
#9258
24M
24.00 mi13:29:433:02:587:378:03
8:03
#9328
40K
24.85 mi13:37:043:10:197:397:21
8:36
#9499
25.2M
25.20 mi13:40:233:13:387:413:19
9:37
#9590
Finish
26.22 mi13:48:413:21:567:428:18
8:09
#9705
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8039102810288806(Top 33%)1371(Top 12%)1371(Top 28%)
10K6.21 mi3.10 mi8272-2331132-1041132-1048549(Top 32%)1249(Top 11%)1249(Top 26%)
15K9.32 mi3.11 mi8394-1221178-461178-468806(Top 33%)1371(Top 12%)1371(Top 28%)
20K12.43 mi3.11 mi8692-2981312-1341312-1349823(Top 37%)1833(Top 16%)1833(Top 38%)
Half13.11 mi0.68 mi8716-241326-141326-149504(Top 36%)1684(Top 15%)1684(Top 34%)
25K15.53 mi2.42 mi8888-1721406-801406-809982(Top 37%)1994(Top 17%)1994(Top 41%)
30K18.64 mi3.11 mi9062-1741513-1071513-1079987(Top 38%)2154(Top 19%)2154(Top 44%)
20M20.00 mi1.36 mi9245-1831614-1011614-10111812(Top 44%)3158(Top 28%)3158(Top 65%)
21M21.00 mi1.00 mi9338-931670-561670-5611357(Top 43%)3055(Top 27%)3055(Top 63%)
35K21.75 mi0.75 mi9266+721657+131657+138001(Top 30%)1508(Top 13%)1508(Top 31%)
23M23.00 mi1.25 mi9258+81682-251682-259666(Top 36%)2330(Top 20%)2330(Top 48%)
24M24.00 mi1.00 mi9328-701724-421724-4211588(Top 44%)3366(Top 29%)3366(Top 69%)
40K24.85 mi0.85 mi9499-1711826-1021826-10213931(Top 52%)4694(Top 41%)4694(Top 96%)
25.2M25.20 mi0.35 mi9590-911879-531879-5315739(Top 59%)5695(Top 50%)5695(Top 117%)
Finish26.22 mi1.02 mi9705-1151968-891968-8913072(Top 49%)4241(Top 37%)4241(Top 87%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8806

Females

1371

F18-39

1371

5K→10K

3.1 - 6.2 mi

Top 32%
×5stories
+79ft-138ft

Overall

8549

Females

1249

F18-39

1249

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8806

Females

1371

F18-39

1371

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9823

Females

1833

F18-39

1833

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9504

Females

1684

F18-39

1684

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9982

Females

1994

F18-39

1994

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

9987

Females

2154

F18-39

2154

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

11812

Females

3158

F18-39

3158

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

11357

Females

3055

F18-39

3055

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8001

Females

1508

F18-39

1508

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9666

Females

2330

F18-39

2330

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

11588

Females

3366

F18-39

3366

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

13931

Females

4694

F18-39

4694

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15739

Females

5695

F18-39

5695

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2stories
+22ft-21ft

Overall

13072

Females

4241

F18-39

4241

Passing Analysis

Category:
Athletes Passed
850
Passed By
2516
Net Change
-1666
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8039
5K → 10K121354-233#8039#8272
10K → 15K95217-122#8272#8394
15K → 20K62360-298#8394#8692
20K → Half1943-24#8692#8716
Half → 25K50222-172#8716#8888
25K → 30K120294-174#8888#9062
30K → 20M38221-183#9062#9245
20M → 21M62155-93#9245#9338
21M → 35K8210+72#9338#9266
35K → 23M8577+8#9266#9258
23M → 24M44114-70#9258#9328
24M → 40K24195-171#9328#9499
40K → 25.2M14105-91#9499#9590
25.2M → Finish34149-115#9590#9705
TOTALS8502516-1666
📊

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