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BOSTON MARATHON 2023

Brittany Downs

Bib: 15183•F

OH

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
8:46/mi
27:13
↑ 97↓ 3451.5%
10K· 6.21 mi
8:35/mi
53:52
↑ 79↓ 1380.4%
15K· 9.32 mi
8:58/mi
1:21:42
↑ 67↓ 78
20K· 12.43 mi
9:16/mi
1:50:28
↑ 106↓ 860.1%
Half· 13.11 mi
8:27/mi
1:56:14
↑ 19↓ 370.5%
25K· 15.53 mi
8:58/mi
2:17:59
↑ 66↓ 880.2%
30K· 18.64 mi
9:07/mi
2:46:19
↑ 181↓ 1480.2%
20M
8:51/mi
2:58:20
↑ 64↓ 500.2%
21M
9:46/mi
3:08:06
↑ 106↓ 241.6%
35K· 21.75 mi
8:33/mi
3:14:30
↑ 17↓ 861.7%
23M
8:58/mi
3:25:43
↑ 23↓ 630.6%
24M
8:39/mi
3:34:22
↓ 821.3%
40K· 24.85 mi
9:16/mi
3:42:17
↓ 200.3%
25.2M
9:37/mi
3:45:36
↑ 13↓ 160.2%
Finish· 26.22 mi
8:19/mi
3:54:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:14
Pace8:52 /mi
2nd Half
Distance13.11 mi
Time1:57:50
Pace8:59 /mi
📊Positive Split: 1.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:1427:138:4627:13
8:46
-
10K
6.21 mi11:24:5353:528:4026:39
8:35
-0:11
15K
9.32 mi11:52:431:21:428:4627:50
8:58
+0:23
20K
12.43 mi12:21:291:50:288:5328:46
9:16
+0:18
Half
13.11 mi12:27:151:56:148:525:46
8:27
-0:49
25K
15.53 mi12:49:002:17:598:5321:45
8:58
+0:31
30K
18.64 mi13:17:202:46:198:5528:20
9:07
+0:09
20M
20.00 mi13:29:212:58:208:5512:01
8:51
-0:16
21M
21.00 mi13:39:073:08:068:579:46
9:46
+0:55
35K
21.75 mi13:45:313:14:308:576:24
8:33
-1:13
23M
23.00 mi13:56:443:25:438:5711:13
8:58
+0:25
24M
24.00 mi14:05:233:34:228:568:39
8:39
-0:19
40K
24.85 mi14:13:183:42:178:577:55
9:16
+0:37
25.2M
25.20 mi14:16:373:45:368:573:19
9:37
+0:21
Finish
26.22 mi14:25:053:54:048:568:28
8:19
-1:18

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

8:19 /mi

Average Pace

8:56 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:04:18

79% of race

Time at Steady Pace

49:46

21% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:56 /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 mi10:58:1427:138:4627:13
8:46
#19241
10K
6.21 mi11:24:5353:528:4026:39
8:35
#18941
15K
9.32 mi11:52:431:21:428:4627:50
8:58
#19427
20K
12.43 mi12:21:291:50:288:5328:46
9:16
#19809
Half
13.11 mi12:27:151:56:148:525:46
8:27
#19697
25K
15.53 mi12:49:002:17:598:5321:45
8:58
#19530
30K
18.64 mi13:17:202:46:198:5528:20
9:07
#19219
20M
20.00 mi13:29:212:58:208:5512:01
8:51
#18956
21M
21.00 mi13:39:073:08:068:579:46
9:46
#18841
35K
21.75 mi13:45:313:14:308:576:24
8:33
#18708
23M
23.00 mi13:56:443:25:438:5711:13
8:58
#18545
24M
24.00 mi14:05:233:34:228:568:39
8:39
#18410
40K
24.85 mi14:13:183:42:178:577:55
9:16
#18366
25.2M
25.20 mi14:16:373:45:368:573:19
9:37
#18327
Finish
26.22 mi14:25:053:54:048:568:28
8:19
#18184
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi192417352735220309(Top 76%)7846(Top 69%)7846(Top 161%)
10K6.21 mi3.10 mi18941+3007109+2437109+24318733(Top 70%)6920(Top 61%)6920(Top 142%)
15K9.32 mi3.11 mi19427-4867408-2997408-29920309(Top 76%)7846(Top 69%)7846(Top 161%)
20K12.43 mi3.11 mi19809-3827605-1977605-19720819(Top 78%)8120(Top 71%)8120(Top 166%)
Half13.11 mi0.68 mi19697+1127531+747531+7417520(Top 66%)6203(Top 54%)6203(Top 127%)
25K15.53 mi2.42 mi19530+1677437+947437+9418823(Top 71%)7025(Top 61%)7025(Top 144%)
30K18.64 mi3.11 mi19219+3117267+1707267+17017803(Top 67%)6527(Top 57%)6527(Top 134%)
20M20.00 mi1.36 mi18956+2637135+1327135+13215705(Top 59%)5404(Top 47%)5404(Top 111%)
21M21.00 mi1.00 mi18841+1157076+597076+5917145(Top 64%)6280(Top 55%)6280(Top 129%)
35K21.75 mi0.75 mi18708+1337002+747002+7415656(Top 59%)5515(Top 48%)5515(Top 113%)
23M23.00 mi1.25 mi18545+1636921+816921+8115870(Top 60%)5670(Top 50%)5670(Top 116%)
24M24.00 mi1.00 mi18410+1356860+616860+6115414(Top 58%)5495(Top 48%)5495(Top 113%)
40K24.85 mi0.85 mi18366+446847+136847+1317366(Top 65%)6609(Top 58%)6609(Top 135%)
25.2M25.20 mi0.35 mi18327+396829+186829+1815824(Top 59%)5780(Top 51%)5780(Top 118%)
Finish26.22 mi1.02 mi18184+1436758+716758+7114199(Top 53%)4860(Top 43%)4860(Top 100%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

20309

Females

7846

F18-39

7846

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

18733

Females

6920

F18-39

6920

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

20309

Females

7846

F18-39

7846

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

20819

Females

8120

F18-39

8120

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

17520

Females

6203

F18-39

6203

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

18823

Females

7025

F18-39

7025

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

17803

Females

6527

F18-39

6527

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

15705

Females

5404

F18-39

5404

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

17145

Females

6280

F18-39

6280

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

15656

Females

5515

F18-39

5515

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

15870

Females

5670

F18-39

5670

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

15414

Females

5495

F18-39

5495

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

17366

Females

6609

F18-39

6609

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15824

Females

5780

F18-39

5780

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

14199

Females

4860

F18-39

4860

Passing Analysis

Category:
Athletes Passed
2449
Passed By
1392
Net Change
+1057
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19241
5K → 10K526226+300#19241#18941
10K → 15K51537-486#18941#19427
15K → 20K70452-382#19427#19809
20K → Half1164+112#19809#19697
Half → 25K20639+167#19697#19530
25K → 30K34938+311#19530#19219
30K → 20M2674+263#19219#18956
20M → 21M14328+115#18956#18841
21M → 35K1385+133#18841#18708
35K → 23M18017+163#18708#18545
23M → 24M1416+135#18545#18410
24M → 40K6925+44#18410#18366
40K → 25.2M434+39#18366#18327
25.2M → Finish1507+143#18327#18184
TOTALS24491392+1057
📊

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