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BOSTON MARATHON 2023

Brianna Karboski

Bib: 11120•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 43%
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
7:31/mi
23:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:29/mi
46:34
↑ 79↓ 1380.4%
15K· 9.32 mi
7:27/mi
1:09:44
↑ 67↓ 78
20K· 12.43 mi
7:40/mi
1:33:32
↑ 106↓ 860.1%
Half· 13.11 mi
7:40/mi
1:38:46
↑ 19↓ 370.5%
25K· 15.53 mi
7:57/mi
1:58:02
↑ 66↓ 880.2%
30K· 18.64 mi
9:35/mi
2:27:49
↑ 181↓ 1480.2%
20M
9:41/mi
2:40:59
↑ 64↓ 500.2%
21M
10:07/mi
2:51:06
↑ 106↓ 241.6%
35K· 21.75 mi
10:15/mi
2:58:46
↑ 17↓ 861.7%
23M
9:57/mi
3:11:13
↑ 23↓ 630.6%
24M
10:05/mi
3:21:18
↓ 821.3%
40K· 24.85 mi
9:11/mi
3:29:09
↓ 200.3%
25.2M
8:54/mi
3:32:13
↑ 13↓ 160.2%
Finish· 26.22 mi
8:12/mi
3:40:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:46
Pace7:32 /mi
2nd Half
Distance13.11 mi
Time2:01:48
Pace9:17 /mi
📊Positive Split: 23.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3623:207:3123:20
7:31
-
10K
6.21 mi11:14:5046:347:3023:14
7:29
-0:02
15K
9.32 mi11:38:001:09:447:2923:10
7:27
-0:02
20K
12.43 mi12:01:481:33:327:3223:48
7:40
+0:13
Half
13.11 mi12:07:021:38:467:325:14
7:40
0:00
25K
15.53 mi12:26:181:58:027:3619:16
7:57
+0:17
30K
18.64 mi12:56:052:27:497:5629:47
9:35
+1:38
20M
20.00 mi13:09:152:40:598:0313:10
9:41
+0:06
21M
21.00 mi13:19:222:51:068:0910:07
10:07
+0:26
35K
21.75 mi13:27:022:58:468:137:40
10:15
+0:08
23M
23.00 mi13:39:293:11:138:1912:27
9:57
-0:18
24M
24.00 mi13:49:343:21:188:2310:05
10:05
+0:08
40K
24.85 mi13:57:253:29:098:257:51
9:11
-0:54
25.2M
25.20 mi14:00:293:32:138:253:04
8:54
-0:17
Finish
26.22 mi14:08:503:40:348:258:21
8:12
-0:42

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

7:27 /mi

Average Pace

8:25 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:23

57% of race

Time at Steady Pace

10:55

5% of race

Time at Slower Pace

1:23:16

38% of race

Average Pace: 8:25 /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 mi10:51:3623:207:3123:20
7:31
#9736
10K
6.21 mi11:14:5046:347:3023:14
7:29
#9983
15K
9.32 mi11:38:001:09:447:2923:10
7:27
#9879
20K
12.43 mi12:01:481:33:327:3223:48
7:40
#10066
Half
13.11 mi12:07:021:38:467:325:14
7:40
#10142
25K
15.53 mi12:26:181:58:027:3619:16
7:57
#10474
30K
18.64 mi12:56:052:27:497:5629:47
9:35
#12730
20M
20.00 mi13:09:152:40:598:0313:10
9:41
#13415
21M
21.00 mi13:19:222:51:068:0910:07
10:07
#13823
35K
21.75 mi13:27:022:58:468:137:40
10:15
#14311
23M
23.00 mi13:39:293:11:138:1912:27
9:57
#14768
24M
24.00 mi13:49:343:21:188:2310:05
10:05
#15126
40K
24.85 mi13:57:253:29:098:257:51
9:11
#15208
25.2M
25.20 mi14:00:293:32:138:253:04
8:54
#15134
Finish
26.22 mi14:08:503:40:348:258:21
8:12
#15084
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9736173017309857(Top 37%)1783(Top 16%)1783(Top 37%)
10K6.21 mi3.10 mi9983-2471836-1061836-10610296(Top 39%)1959(Top 17%)1959(Top 40%)
15K9.32 mi3.11 mi9879+1041776+601776+609857(Top 37%)1783(Top 16%)1783(Top 37%)
20K12.43 mi3.11 mi10066-1871863-871863-8710616(Top 40%)2215(Top 19%)2215(Top 45%)
Half13.11 mi0.68 mi10142-761907-441907-4411750(Top 44%)2794(Top 24%)2794(Top 57%)
25K15.53 mi2.42 mi10474-3322086-1792086-17912308(Top 46%)3262(Top 29%)3262(Top 67%)
30K18.64 mi3.11 mi12730-22563392-13063392-130619742(Top 74%)7612(Top 67%)7612(Top 156%)
20M20.00 mi1.36 mi13415-6853809-4173809-41719526(Top 73%)7587(Top 66%)7587(Top 155%)
21M21.00 mi1.00 mi13823-4084070-2614070-26118453(Top 69%)7021(Top 61%)7021(Top 144%)
35K21.75 mi0.75 mi14311-4884397-3274397-32721877(Top 82%)8976(Top 79%)8976(Top 184%)
23M23.00 mi1.25 mi14768-4574697-3004697-30019816(Top 74%)7852(Top 69%)7852(Top 161%)
24M24.00 mi1.00 mi15126-3584932-2354932-23521027(Top 79%)8557(Top 75%)8557(Top 175%)
40K24.85 mi0.85 mi15208-824998-664998-6617018(Top 64%)6403(Top 56%)6403(Top 131%)
25.2M25.20 mi0.35 mi15134+744967+314967+3112021(Top 45%)3759(Top 33%)3759(Top 77%)
Finish26.22 mi1.02 mi15084+504959+84959+813425(Top 50%)4429(Top 39%)4429(Top 91%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

9857

Females

1783

F18-39

1783

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

10296

Females

1959

F18-39

1959

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

9857

Females

1783

F18-39

1783

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

10616

Females

2215

F18-39

2215

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

11750

Females

2794

F18-39

2794

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

12308

Females

3262

F18-39

3262

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

19742

Females

7612

F18-39

7612

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

19526

Females

7587

F18-39

7587

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

18453

Females

7021

F18-39

7021

21M→35K

21.0 - 21.8 mi

Top 82%
×7story building
+17ft-86ft

Overall

21877

Females

8976

F18-39

8976

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

19816

Females

7852

F18-39

7852

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

21027

Females

8557

F18-39

8557

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

17018

Females

6403

F18-39

6403

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12021

Females

3759

F18-39

3759

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

13425

Females

4429

F18-39

4429

Passing Analysis

Category:
Athletes Passed
899
Passed By
6246
Net Change
-5348
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9736
5K → 10K212459-247#9736#9983
10K → 15K235131+104#9983#9879
15K → 20K109296-187#9879#10066
20K → Half1489-76#10066#10142
Half → 25K54386-332#10142#10474
25K → 30K72263-2256#10474#12730
30K → 20M14699-685#12730#13415
20M → 21M20428-408#13415#13823
21M → 35K2490-488#13823#14311
35K → 23M14471-457#14311#14768
23M → 24M12370-358#14768#15126
24M → 40K39121-82#15126#15208
40K → 25.2M784+74#15208#15134
25.2M → Finish8939+50#15134#15084
TOTALS8996246-5348
📊

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