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BOSTON MARATHON 2023

Breana Siljander

Bib: 12589•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 48%
Gender (Female)
#0 / 11423
Top 31%
Division (F18-39)
#0 / 4884
Top 49%
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
7:48/mi
24:13
↑ 97↓ 3451.5%
10K· 6.21 mi
7:48/mi
48:26
↑ 79↓ 1380.4%
15K· 9.32 mi
7:57/mi
1:13:08
↑ 67↓ 78
20K· 12.43 mi
8:12/mi
1:38:38
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:44:07
↑ 19↓ 370.5%
25K· 15.53 mi
8:14/mi
2:04:05
↑ 66↓ 880.2%
30K· 18.64 mi
8:22/mi
2:30:06
↑ 181↓ 1480.2%
20M
8:11/mi
2:41:13
↑ 64↓ 500.2%
21M
8:47/mi
2:50:00
↑ 106↓ 241.6%
35K· 21.75 mi
7:48/mi
2:55:50
↑ 17↓ 861.7%
23M
8:08/mi
3:06:01
↑ 23↓ 630.6%
24M
8:02/mi
3:14:03
↓ 821.3%
40K· 24.85 mi
8:00/mi
3:20:53
↓ 200.3%
25.2M
8:45/mi
3:23:54
↑ 13↓ 160.2%
Finish· 26.22 mi
7:48/mi
3:31:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:07
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:47:44
Pace8:13 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:1024:137:4824:13
7:48
-
10K
6.21 mi11:16:2348:267:4824:13
7:48
0:00
15K
9.32 mi11:41:051:13:087:5124:42
7:57
+0:09
20K
12.43 mi12:06:351:38:387:5625:30
8:12
+0:15
Half
13.11 mi12:12:041:44:077:575:29
8:02
-0:10
25K
15.53 mi12:32:022:04:057:5919:58
8:14
+0:12
30K
18.64 mi12:58:032:30:068:0326:01
8:22
+0:08
20M
20.00 mi13:09:102:41:138:0411:07
8:11
-0:11
21M
21.00 mi13:17:572:50:008:068:47
8:47
+0:36
35K
21.75 mi13:23:472:55:508:055:50
7:48
-0:59
23M
23.00 mi13:33:583:06:018:0510:11
8:08
+0:20
24M
24.00 mi13:42:003:14:038:058:02
8:02
-0:06
40K
24.85 mi13:48:503:20:538:056:50
8:00
-0:02
25.2M
25.20 mi13:51:513:23:548:053:01
8:45
+0:45
Finish
26.22 mi13:59:483:31:518:057:57
7:48
-0:57

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

7:48 /mi

Average Pace

8:05 /mi

Slowest Pace

8:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:20:03

94% of race

Time at Steady Pace

11:48

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:05 /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 mi10:52:1024:137:4824:13
7:48
#12310
10K
6.21 mi11:16:2348:267:4824:13
7:48
#12660
15K
9.32 mi11:41:051:13:087:5124:42
7:57
#13103
20K
12.43 mi12:06:351:38:387:5625:30
8:12
#13602
Half
13.11 mi12:12:041:44:077:575:29
8:02
#13649
25K
15.53 mi12:32:022:04:057:5919:58
8:14
#13767
30K
18.64 mi12:58:032:30:068:0326:01
8:22
#13698
20M
20.00 mi13:09:102:41:138:0411:07
8:11
#13517
21M
21.00 mi13:17:572:50:008:068:47
8:47
#13417
35K
21.75 mi13:23:472:55:508:055:50
7:48
#13296
23M
23.00 mi13:33:583:06:018:0510:11
8:08
#13101
24M
24.00 mi13:42:003:14:038:058:02
8:02
#13020
40K
24.85 mi13:48:503:20:538:056:50
8:00
#12889
25.2M
25.20 mi13:51:513:23:548:053:01
8:45
#12863
Finish
26.22 mi13:59:483:31:518:057:57
7:48
#12765
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 mi123103048304814001(Top 53%)4084(Top 36%)4084(Top 84%)
10K6.21 mi3.10 mi12660-3503242-1943242-19413081(Top 49%)3480(Top 30%)3480(Top 71%)
15K9.32 mi3.11 mi13103-4433526-2843526-28414001(Top 53%)4084(Top 36%)4084(Top 84%)
20K12.43 mi3.11 mi13602-4993846-3203846-32015007(Top 56%)4716(Top 41%)4716(Top 97%)
Half13.11 mi0.68 mi13649-473878-323878-3214675(Top 55%)4471(Top 39%)4471(Top 92%)
25K15.53 mi2.42 mi13767-1183968-903968-9014485(Top 54%)4500(Top 39%)4500(Top 92%)
30K18.64 mi3.11 mi13698+693955+133955+1313521(Top 51%)4035(Top 35%)4035(Top 83%)
20M20.00 mi1.36 mi13517+1813869+863869+8611601(Top 44%)3063(Top 27%)3063(Top 63%)
21M21.00 mi1.00 mi13417+1003827+423827+4212182(Top 46%)3503(Top 31%)3503(Top 72%)
35K21.75 mi0.75 mi13296+1213768+593768+5910710(Top 40%)2744(Top 24%)2744(Top 56%)
23M23.00 mi1.25 mi13101+1953680+883680+8810746(Top 40%)2901(Top 25%)2901(Top 59%)
24M24.00 mi1.00 mi13020+813664+163664+1611502(Top 43%)3333(Top 29%)3333(Top 68%)
40K24.85 mi0.85 mi12889+1313607+573607+5710047(Top 38%)2684(Top 23%)2684(Top 55%)
25.2M25.20 mi0.35 mi12863+263601+63601+611104(Top 42%)3262(Top 29%)3262(Top 67%)
Finish26.22 mi1.02 mi12765+983563+383563+3810717(Top 40%)3049(Top 27%)3049(Top 62%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

14001

Females

4084

F18-39

4084

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13081

Females

3480

F18-39

3480

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

14001

Females

4084

F18-39

4084

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15007

Females

4716

F18-39

4716

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

14675

Females

4471

F18-39

4471

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

14485

Females

4500

F18-39

4500

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

13521

Females

4035

F18-39

4035

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

11601

Females

3063

F18-39

3063

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

12182

Females

3503

F18-39

3503

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

10710

Females

2744

F18-39

2744

35K→23M

21.8 - 23.0 mi

Top 40%
×5story building
+23ft-63ft

Overall

10746

Females

2901

F18-39

2901

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

11502

Females

3333

F18-39

3333

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10047

Females

2684

F18-39

2684

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11104

Females

3262

F18-39

3262

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

10717

Females

3049

F18-39

3049

Passing Analysis

Category:
Athletes Passed
1728
Passed By
2183
Net Change
-455
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12310
5K → 10K174524-350#12310#12660
10K → 15K70513-443#12660#13103
15K → 20K73572-499#13103#13602
20K → Half1360-47#13602#13649
Half → 25K98216-118#13649#13767
25K → 30K217148+69#13767#13698
30K → 20M19514+181#13698#13517
20M → 21M14646+100#13517#13417
21M → 35K1287+121#13417#13296
35K → 23M20914+195#13296#13101
23M → 24M10322+81#13101#13020
24M → 40K14514+131#13020#12889
40K → 25.2M3711+26#12889#12863
25.2M → Finish12022+98#12863#12765
TOTALS17282183-455
📊

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