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BOSTON MARATHON 2023

Erin Nomland

Bib: 12843•F

PA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 41%
Gender (Female)
#0 / 11423
Top 23%
Division (F18-39)
#0 / 4884
Top 38%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:06
Rank: #9120
Start → 5K
23:06 | 7:26/mi
10K· 6.21 mi
45:56
Rank: #9138 (-18)
5K → 10K
22:50 | 7:21/mi
15K· 9.32 mi
1:09:28
Rank: #9640 (-502)
10K → 15K
23:32 | 7:34/mi
20K· 12.43 mi
1:33:40
Rank: #10166 (-526)
15K → 20K
24:12 | 7:47/mi
Half· 13.11 mi
1:38:58
Rank: #10288 (-122)
20K → Half
5:18 | 7:46/mi
25K· 15.53 mi
1:57:54
Rank: #10407 (-119)
Half → 25K
18:56 | 7:49/mi
30K· 18.64 mi
2:22:59
Rank: #10531 (-124)
25K → 30K
25:05 | 8:04/mi
20M
2:34:13
Rank: #10644 (-113)
30K → 20M
11:14 | 8:16/mi
21M
2:42:29
Rank: #10520 (+124)
20M → 21M
8:16 | 8:16/mi
35K· 21.75 mi
2:48:24
Rank: #10524 (-4)
21M → 35K
5:55 | 7:55/mi
23M
2:58:54
Rank: #10626 (-102)
35K → 23M
10:30 | 8:23/mi
24M
3:07:33
Rank: #10856 (-230)
23M → 24M
8:39 | 8:39/mi
40K· 24.85 mi
3:14:55
Rank: #10988 (-132)
24M → 40K
7:22 | 8:37/mi
25.2M
3:17:56
Rank: #10964 (+24)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:25:57
Rank: #10962 (+2)
25.2M → Finish
8:01 | 7:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:58
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:46:59
Pace8:10 /mi
📊Positive Split: 8.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5223:067:2623:06
7:26
-
10K
6.21 mi11:13:4245:567:2422:50
7:21
-0:05
15K
9.32 mi11:37:141:09:287:2723:32
7:34
+0:13
20K
12.43 mi12:01:261:33:407:3224:12
7:47
+0:13
Half
13.11 mi12:06:441:38:587:335:18
7:46
-0:01
25K
15.53 mi12:25:401:57:547:3518:56
7:49
+0:03
30K
18.64 mi12:50:452:22:597:4025:05
8:04
+0:15
20M
20.00 mi13:01:592:34:137:4311:14
8:16
+0:12
21M
21.00 mi13:10:152:42:297:448:16
8:16
0:00
35K
21.75 mi13:16:102:48:247:455:55
7:55
-0:21
23M
23.00 mi13:26:402:58:547:4710:30
8:23
+0:28
24M
24.00 mi13:35:193:07:337:498:39
8:39
+0:16
40K
24.85 mi13:42:413:14:557:517:22
8:37
-0:02
25.2M
25.20 mi13:45:423:17:567:513:01
8:45
+0:08
Finish
26.22 mi13:53:433:25:577:528:01
7:52
-0:53

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

7:21 /mi

Average Pace

7:52 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:36:55

76% of race

Time at Steady Pace

46:01

22% of race

Time at Slower Pace

3:01

1% of race

Average Pace: 7:51 /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 mi10:50:5223:067:2623:06
7:26
#9120
10K
6.21 mi11:13:4245:567:2422:50
7:21
#9138
15K
9.32 mi11:37:141:09:287:2723:32
7:34
#9640
20K
12.43 mi12:01:261:33:407:3224:12
7:47
#10166
Half
13.11 mi12:06:441:38:587:335:18
7:46
#10288
25K
15.53 mi12:25:401:57:547:3518:56
7:49
#10407
30K
18.64 mi12:50:452:22:597:4025:05
8:04
#10531
20M
20.00 mi13:01:592:34:137:4311:14
8:16
#10644
21M
21.00 mi13:10:152:42:297:448:16
8:16
#10520
35K
21.75 mi13:16:102:48:247:455:55
7:55
#10524
23M
23.00 mi13:26:402:58:547:4710:30
8:23
#10626
24M
24.00 mi13:35:193:07:337:498:39
8:39
#10856
40K
24.85 mi13:42:413:14:557:517:22
8:37
#10988
25.2M
25.20 mi13:45:423:17:567:513:01
8:45
#10964
Finish
26.22 mi13:53:433:25:577:528:01
7:52
#10962
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi91201442144210806(Top 41%)2236(Top 20%)2236(Top 46%)
10K6.21 mi3.10 mi9138-181469-271469-279244(Top 35%)1517(Top 13%)1517(Top 31%)
15K9.32 mi3.11 mi9640-5021678-2091678-20910806(Top 41%)2236(Top 20%)2236(Top 46%)
20K12.43 mi3.11 mi10166-5261910-2321910-23211658(Top 44%)2769(Top 24%)2769(Top 57%)
Half13.11 mi0.68 mi10288-1221969-591969-5912464(Top 47%)3167(Top 28%)3167(Top 65%)
25K15.53 mi2.42 mi10407-1192050-812050-8111169(Top 42%)2571(Top 23%)2571(Top 53%)
30K18.64 mi3.11 mi10531-1242170-1202170-12011467(Top 43%)2881(Top 25%)2881(Top 59%)
20M20.00 mi1.36 mi10644-1132253-832253-8312184(Top 46%)3392(Top 30%)3392(Top 69%)
21M21.00 mi1.00 mi10520+1242214+392214+398963(Top 34%)1922(Top 17%)1922(Top 39%)
35K21.75 mi0.75 mi10524-42230-162230-1611479(Top 43%)3119(Top 27%)3119(Top 64%)
23M23.00 mi1.25 mi10626-1022316-862316-8612498(Top 47%)3788(Top 33%)3788(Top 78%)
24M24.00 mi1.00 mi10856-2302456-1402456-14015365(Top 58%)5446(Top 48%)5446(Top 112%)
40K24.85 mi0.85 mi10988-1322548-922548-9214055(Top 53%)4766(Top 42%)4766(Top 98%)
25.2M25.20 mi0.35 mi10964+242550-22550-211062(Top 42%)3220(Top 28%)3220(Top 66%)
Finish26.22 mi1.02 mi10962+22571-212571-2111174(Top 42%)3280(Top 29%)3280(Top 67%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

10806

Females

2236

F18-39

2236

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9244

Females

1517

F18-39

1517

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

10806

Females

2236

F18-39

2236

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11658

Females

2769

F18-39

2769

20K→Half

12.4 - 13.1 mi

Top 47%
×2stories
+19ft-37ft

Overall

12464

Females

3167

F18-39

3167

Half→25K

13.1 - 15.5 mi

Top 42%
×4stories
+66ft-88ft

Overall

11169

Females

2571

F18-39

2571

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11467

Females

2881

F18-39

2881

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

12184

Females

3392

F18-39

3392

20M→21M

20.0 - 21.0 mi

Top 34%
×8stories
+106ft-24ft

Overall

8963

Females

1922

F18-39

1922

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

11479

Females

3119

F18-39

3119

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

12498

Females

3788

F18-39

3788

23M→24M

23.0 - 24.0 mi

Top 58%
×6stories
+12ft-82ft

Overall

15365

Females

5446

F18-39

5446

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14055

Females

4766

F18-39

4766

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11062

Females

3220

F18-39

3220

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2stories
+22ft-21ft

Overall

11174

Females

3280

F18-39

3280

Passing Analysis

Category:
Athletes Passed
1057*
Passed By
2898
Net Change
-1842
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9120
5K → 10K267285-18#9120#9138
10K → 15K45547-502#9138#9640
15K → 20K47572-526#9640#10166
20K → Half4126-122#10166#10288
Half → 25K107226-119#10288#10407
25K → 30K123247-124#10407#10531
30K → 20M49*162-113#10531#10644
20M → 21M14420+124#10644#10520
21M → 35K4650-4#10520#10524
35K → 23M56158-102#10524#10626
23M → 24M26256-230#10626#10856
24M → 40K29161-132#10856#10988
40K → 25.2M4723+24#10988#10964
25.2M → Finish6765+2#10964#10962
TOTALS1057*2898-1842

* 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