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BOSTON MARATHON 2023

Ellen Moss

Bib: 18421•F

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 48%
Masters (Masters Women)
#0 / 6539
Top 37%
Division (F40-44)
#0 / 1878
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
8:23/mi
26:02
↑ 97↓ 3451.5%
10K· 6.21 mi
8:37/mi
52:47
↑ 79↓ 1380.4%
15K· 9.32 mi
8:18/mi
1:18:35
↑ 67↓ 78
20K· 12.43 mi
9:39/mi
1:48:33
↑ 106↓ 860.1%
Half· 13.11 mi
8:10/mi
1:54:07
↑ 19↓ 370.5%
25K· 15.53 mi
8:18/mi
2:14:14
↑ 66↓ 880.2%
30K· 18.64 mi
8:45/mi
2:41:24
↑ 181↓ 1480.2%
20M
8:40/mi
2:53:11
↑ 64↓ 500.2%
21M
8:42/mi
3:01:53
↑ 106↓ 241.6%
35K· 21.75 mi
7:56/mi
3:07:49
↑ 17↓ 861.7%
23M
8:09/mi
3:18:01
↑ 23↓ 630.6%
24M
7:59/mi
3:26:00
↓ 821.3%
40K· 24.85 mi
8:10/mi
3:32:59
↓ 200.3%
25.2M
10:52/mi
3:36:44
↑ 13↓ 160.2%
Finish· 26.22 mi
7:31/mi
3:44:24
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:54:07
Pace8:42 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:50:17
Pace8:25 /mi
📊Negative Split: 3.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4026:028:2326:02
8:23
-
10K
6.21 mi11:47:2552:478:3026:45
8:37
+0:14
15K
9.32 mi12:13:131:18:358:2625:48
8:18
-0:19
20K
12.43 mi12:43:111:48:338:4429:58
9:39
+1:21
Half
13.11 mi12:48:451:54:078:425:34
8:10
-1:29
25K
15.53 mi13:08:522:14:148:3820:07
8:18
+0:08
30K
18.64 mi13:36:022:41:248:3927:10
8:45
+0:27
20M
20.00 mi13:47:492:53:118:4011:47
8:40
-0:05
21M
21.00 mi13:56:313:01:538:408:42
8:42
+0:02
35K
21.75 mi14:02:273:07:498:385:56
7:56
-0:46
23M
23.00 mi14:12:393:18:018:3710:12
8:09
+0:13
24M
24.00 mi14:20:383:26:008:357:59
7:59
-0:10
40K
24.85 mi14:27:373:32:598:346:59
8:10
+0:11
25.2M
25.20 mi14:31:223:36:448:363:45
10:52
+2:42
Finish
26.22 mi14:39:023:44:248:347:40
7:31
-3:21

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

7:31 /mi

Average Pace

8:34 /mi

Slowest Pace

10:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

7:40

3% of race

Time at Steady Pace

2:27:09

66% of race

Time at Slower Pace

1:09:35

31% of race

Average Pace: 8:34 /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 mi11:20:4026:028:2326:02
8:23
#16736
10K
6.21 mi11:47:2552:478:3026:45
8:37
#17877
15K
9.32 mi12:13:131:18:358:2625:48
8:18
#17401
20K
12.43 mi12:43:111:48:338:4429:58
9:39
#18990
Half
13.11 mi12:48:451:54:078:425:34
8:10
#18819
25K
15.53 mi13:08:522:14:148:3820:07
8:18
#18210
30K
18.64 mi13:36:022:41:248:3927:10
8:45
#17705
20M
20.00 mi13:47:492:53:118:4011:47
8:40
#17482
21M
21.00 mi13:56:313:01:538:408:42
8:42
#17163
35K
21.75 mi14:02:273:07:498:385:56
7:56
#16970
23M
23.00 mi14:12:393:18:018:3710:12
8:09
#16634
24M
24.00 mi14:20:383:26:008:357:59
7:59
#16403
40K
24.85 mi14:27:373:32:598:346:59
8:10
#16195
25.2M
25.20 mi14:31:223:36:448:363:45
10:52
#16287
Finish
26.22 mi14:39:023:44:248:347:40
7:31
#16021
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi167365751575116571(Top 62%)5643(Top 49%)5643(Top 300%)
10K6.21 mi3.10 mi17877-11416451-7006451-70018891(Top 71%)7018(Top 61%)7018(Top 374%)
15K9.32 mi3.11 mi17401+4766157+2946157+29416571(Top 62%)5643(Top 49%)5643(Top 300%)
20K12.43 mi3.11 mi18990-15897116-9597116-95921986(Top 83%)8789(Top 77%)8789(Top 468%)
Half13.11 mi0.68 mi18819+1717014+1027014+10215572(Top 58%)5044(Top 44%)5044(Top 269%)
25K15.53 mi2.42 mi18210+6096652+3626652+36214964(Top 56%)4816(Top 42%)4816(Top 256%)
30K18.64 mi3.11 mi17705+5056379+2736379+27315756(Top 59%)5358(Top 47%)5358(Top 285%)
20M20.00 mi1.36 mi17482+2236267+1126267+11214709(Top 55%)4836(Top 42%)4836(Top 258%)
21M21.00 mi1.00 mi17163+3196088+1796088+17911714(Top 44%)3265(Top 29%)3265(Top 174%)
35K21.75 mi0.75 mi16970+1935972+1165972+11611697(Top 44%)3276(Top 29%)3276(Top 174%)
23M23.00 mi1.25 mi16634+3365809+1635809+16310856(Top 41%)2958(Top 26%)2958(Top 158%)
24M24.00 mi1.00 mi16403+2315690+1195690+11911174(Top 42%)3198(Top 28%)3198(Top 170%)
40K24.85 mi0.85 mi16195+2085591+995591+9911207(Top 42%)3277(Top 29%)3277(Top 174%)
25.2M25.20 mi0.35 mi16287-925650-595650-5920168(Top 76%)8137(Top 71%)8137(Top 433%)
Finish26.22 mi1.02 mi16021+2665502+1485502+1488775(Top 33%)2155(Top 19%)2155(Top 115%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

16571

Females

5643

F40-44

5643

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

18891

Females

7018

F40-44

7018

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

16571

Females

5643

F40-44

5643

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

21986

Females

8789

F40-44

8789

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

15572

Females

5044

F40-44

5044

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

14964

Females

4816

F40-44

4816

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

15756

Females

5358

F40-44

5358

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14709

Females

4836

F40-44

4836

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11714

Females

3265

F40-44

3265

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

11697

Females

3276

F40-44

3276

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

10856

Females

2958

F40-44

2958

23M→24M

23.0 - 24.0 mi

Top 42%
×6story building
+12ft-82ft

Overall

11174

Females

3198

F40-44

3198

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11207

Females

3277

F40-44

3277

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20168

Females

8137

F40-44

8137

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

8775

Females

2155

F40-44

2155

Passing Analysis

Category:
Athletes Passed
3692
Passed By
2977
Net Change
+715
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16736
5K → 10K521193-1141#16736#17877
10K → 15K52852+476#17877#17401
15K → 20K141603-1589#17401#18990
20K → Half1710+171#18990#18819
Half → 25K6112+609#18819#18210
25K → 30K5149+505#18210#17705
30K → 20M2329+223#17705#17482
20M → 21M3212+319#17482#17163
21M → 35K1930+193#17163#16970
35K → 23M3382+336#16970#16634
23M → 24M2343+231#16634#16403
24M → 40K2091+208#16403#16195
40K → 25.2M799-92#16195#16287
25.2M → Finish2682+266#16287#16021
TOTALS36922977+715
📊

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