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BOSTON MARATHON 2023

Brittany Kelland

Bib: 9298•F

CO

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 19%
Gender (Female)
#0 / 11423
Top 4%
Division (F18-39)
#0 / 4884
Top 7%
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
6:51/mi
21:18
↑ 97↓ 3451.5%
10K· 6.21 mi
6:56/mi
42:50
↑ 79↓ 1380.4%
15K· 9.32 mi
6:56/mi
1:04:24
↑ 67↓ 78
20K· 12.43 mi
6:58/mi
1:26:04
↑ 106↓ 860.1%
Half· 13.11 mi
6:56/mi
1:30:48
↑ 19↓ 370.5%
25K· 15.53 mi
7:10/mi
1:48:10
↑ 66↓ 880.2%
30K· 18.64 mi
7:23/mi
2:11:06
↑ 181↓ 1480.2%
20M
7:15/mi
2:20:57
↑ 64↓ 500.2%
21M
7:29/mi
2:28:26
↑ 106↓ 241.6%
35K· 21.75 mi
6:52/mi
2:33:34
↑ 17↓ 861.7%
23M
7:01/mi
2:42:21
↑ 23↓ 630.6%
24M
7:00/mi
2:49:21
↓ 821.3%
40K· 24.85 mi
6:46/mi
2:55:08
↓ 200.3%
25.2M
7:03/mi
2:57:34
↑ 13↓ 160.2%
Finish· 26.22 mi
5:56/mi
3:03:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:48
Pace6:56 /mi
2nd Half
Distance13.11 mi
Time1:32:49
Pace7:05 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:4721:186:5121:18
6:51
-
10K
6.21 mi11:08:1942:506:5421:32
6:56
+0:05
15K
9.32 mi11:29:531:04:246:5521:34
6:56
0:00
20K
12.43 mi11:51:331:26:046:5621:40
6:58
+0:02
Half
13.11 mi11:56:171:30:486:564:44
6:56
-0:02
25K
15.53 mi12:13:391:48:106:5817:22
7:10
+0:14
30K
18.64 mi12:36:352:11:067:0222:56
7:23
+0:13
20M
20.00 mi12:46:262:20:577:039:51
7:15
-0:08
21M
21.00 mi12:53:552:28:267:047:29
7:29
+0:14
35K
21.75 mi12:59:032:33:347:045:08
6:52
-0:37
23M
23.00 mi13:07:502:42:217:048:47
7:01
+0:09
24M
24.00 mi13:14:502:49:217:037:00
7:00
-0:01
40K
24.85 mi13:20:372:55:087:035:47
6:46
-0:14
25.2M
25.20 mi13:23:032:57:347:032:26
7:03
+0:17
Finish
26.22 mi13:29:063:03:377:006:03
5:56
-1:07

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

5:56 /mi

Average Pace

7:00 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

11:50

6% of race

Time at Steady Pace

1:54:09

62% of race

Time at Slower Pace

57:38

31% of race

Average Pace: 7:00 /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 mi10:46:4721:186:5121:18
6:51
#5202
10K
6.21 mi11:08:1942:506:5421:32
6:56
#5772
15K
9.32 mi11:29:531:04:246:5521:34
6:56
#5922
20K
12.43 mi11:51:331:26:046:5621:40
6:58
#5878
Half
13.11 mi11:56:171:30:486:564:44
6:56
#5898
25K
15.53 mi12:13:391:48:106:5817:22
7:10
#5992
30K
18.64 mi12:36:352:11:067:0222:56
7:23
#6013
20M
20.00 mi12:46:262:20:577:039:51
7:15
#5937
21M
21.00 mi12:53:552:28:267:047:29
7:29
#5807
35K
21.75 mi12:59:032:33:347:045:08
6:52
#5752
23M
23.00 mi13:07:502:42:217:048:47
7:01
#5577
24M
24.00 mi13:14:502:49:217:037:00
7:00
#5491
40K
24.85 mi13:20:372:55:087:035:47
6:46
#5314
25.2M
25.20 mi13:23:032:57:347:032:26
7:03
#5249
Finish
26.22 mi13:29:063:03:377:006:03
5:56
#4977
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi52023733736223(Top 23%)575(Top 5%)575(Top 12%)
10K6.21 mi3.10 mi5772-570465-92465-926367(Top 24%)605(Top 5%)605(Top 12%)
15K9.32 mi3.11 mi5922-150498-33498-336223(Top 23%)575(Top 5%)575(Top 12%)
20K12.43 mi3.11 mi5878+44492+6492+65844(Top 22%)489(Top 4%)489(Top 10%)
Half13.11 mi0.68 mi5898-20494-2494-26253(Top 23%)553(Top 5%)553(Top 11%)
25K15.53 mi2.42 mi5992-94509-15509-156465(Top 24%)682(Top 6%)682(Top 14%)
30K18.64 mi3.11 mi6013-21530-21530-216509(Top 24%)761(Top 7%)761(Top 16%)
20M20.00 mi1.36 mi5937+76525+5525+55381(Top 20%)538(Top 5%)538(Top 11%)
21M21.00 mi1.00 mi5807+130504+21504+214521(Top 17%)402(Top 4%)402(Top 8%)
35K21.75 mi0.75 mi5752+55497+7497+74607(Top 17%)414(Top 4%)414(Top 8%)
23M23.00 mi1.25 mi5577+175471+26471+263891(Top 15%)305(Top 3%)305(Top 6%)
24M24.00 mi1.00 mi5491+86468+3468+34700(Top 18%)488(Top 4%)488(Top 10%)
40K24.85 mi0.85 mi5314+177447+21447+212698(Top 10%)208(Top 2%)208(Top 4%)
25.2M25.20 mi0.35 mi5249+65438+9438+92025(Top 8%)137(Top 1%)137(Top 3%)
Finish26.22 mi1.02 mi4977+272400+38400+38606(Top 2%)31(Top 0.3%)31(Top 0.6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21story building
+97ft-345ft

Overall

6223

Females

575

F18-39

575

5K→10K

3.1 - 6.2 mi

Top 24%
×5story building
+79ft-138ft

Overall

6367

Females

605

F18-39

605

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+67ft-78ft

Overall

6223

Females

575

F18-39

575

15K→20K

9.3 - 12.4 mi

Top 22%
×5story building
+106ft-86ft

Overall

5844

Females

489

F18-39

489

20K→Half

12.4 - 13.1 mi

Top 23%
×2story building
+19ft-37ft

Overall

6253

Females

553

F18-39

553

Half→25K

13.1 - 15.5 mi

Top 24%
×4story building
+66ft-88ft

Overall

6465

Females

682

F18-39

682

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6509

Females

761

F18-39

761

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5381

Females

538

F18-39

538

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4521

Females

402

F18-39

402

21M→35K

21.0 - 21.8 mi

Top 17%
×7story building
+17ft-86ft

Overall

4607

Females

414

F18-39

414

35K→23M

21.8 - 23.0 mi

Top 15%
×5story building
+23ft-63ft

Overall

3891

Females

305

F18-39

305

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

4700

Females

488

F18-39

488

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2698

Females

208

F18-39

208

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2025

Females

137

F18-39

137

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2story building
+22ft-21ft

Overall

606

Females

31

F18-39

31

Passing Analysis

Category:
Athletes Passed
1512
Passed By
1287
Net Change
+225
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5202
5K → 10K52622-570#5202#5772
10K → 15K66216-150#5772#5922
15K → 20K12581+44#5922#5878
20K → Half1434-20#5878#5898
Half → 25K46140-94#5898#5992
25K → 30K121142-21#5992#6013
30K → 20M9822+76#6013#5937
20M → 21M1366+130#5937#5807
21M → 35K627+55#5807#5752
35K → 23M1816+175#5752#5577
23M → 24M9610+86#5577#5491
24M → 40K1781+177#5491#5314
40K → 25.2M650+65#5314#5249
25.2M → Finish2720+272#5249#4977
TOTALS15121287+225
📊

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