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BOSTON MARATHON 2023

Amy Balash

Bib: 22313•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Masters (Masters Women)
#0 / 6539
Top 16%
Division (F45-49)
#0 / 1817
Top 17%
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
8:04/mi
25:04
↑ 97↓ 3451.5%
10K· 6.21 mi
7:55/mi
49:40
↑ 79↓ 1380.4%
15K· 9.32 mi
7:54/mi
1:14:12
↑ 67↓ 78
20K· 12.43 mi
7:45/mi
1:38:16
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:43:33
↑ 19↓ 370.5%
25K· 15.53 mi
7:45/mi
2:02:21
↑ 66↓ 880.2%
30K· 18.64 mi
8:07/mi
2:27:35
↑ 181↓ 1480.2%
20M
8:14/mi
2:38:46
↑ 64↓ 500.2%
21M
8:53/mi
2:47:39
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:53:33
↑ 17↓ 861.7%
23M
8:20/mi
3:03:59
↑ 23↓ 630.6%
24M
8:05/mi
3:12:04
↓ 821.3%
40K· 24.85 mi
8:26/mi
3:19:17
↓ 200.3%
25.2M
9:20/mi
3:22:30
↑ 13↓ 160.2%
Finish· 26.22 mi
8:17/mi
3:30:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:33
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:47:23
Pace8:11 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3525:048:0425:04
8:04
-
10K
6.21 mi11:45:1149:408:0024:36
7:55
-0:09
15K
9.32 mi12:09:431:14:127:5824:32
7:54
-0:01
20K
12.43 mi12:33:471:38:167:5424:04
7:45
-0:09
Half
13.11 mi12:39:041:43:337:545:17
7:45
0:00
25K
15.53 mi12:57:522:02:217:5318:48
7:45
0:00
30K
18.64 mi13:23:062:27:357:5525:14
8:07
+0:22
20M
20.00 mi13:34:172:38:467:5611:11
8:14
+0:07
21M
21.00 mi13:43:102:47:397:598:53
8:53
+0:39
35K
21.75 mi13:49:042:53:337:595:54
7:53
-1:00
23M
23.00 mi13:59:303:03:598:0010:26
8:20
+0:27
24M
24.00 mi14:07:353:12:048:008:05
8:05
-0:15
40K
24.85 mi14:14:483:19:178:017:13
8:26
+0:21
25.2M
25.20 mi14:18:013:22:308:023:13
9:20
+0:54
Finish
26.22 mi14:26:273:30:568:038:26
8:17
-1:03

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

7:45 /mi

Average Pace

8:03 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

48:09

23% of race

Time at Steady Pace

2:13:02

63% of race

Time at Slower Pace

29:45

14% of race

Average Pace: 8:03 /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 mi11:20:3525:048:0425:04
8:04
#14479
10K
6.21 mi11:45:1149:408:0024:36
7:55
#14347
15K
9.32 mi12:09:431:14:127:5824:32
7:54
#14059
20K
12.43 mi12:33:471:38:167:5424:04
7:45
#13389
Half
13.11 mi12:39:041:43:337:545:17
7:45
#13311
25K
15.53 mi12:57:522:02:217:5318:48
7:45
#12828
30K
18.64 mi13:23:062:27:357:5525:14
8:07
#12610
20M
20.00 mi13:34:172:38:467:5611:11
8:14
#12542
21M
21.00 mi13:43:102:47:397:598:53
8:53
#12522
35K
21.75 mi13:49:042:53:337:595:54
7:53
#12471
23M
23.00 mi13:59:303:03:598:0010:26
8:20
#12447
24M
24.00 mi14:07:353:12:048:008:05
8:05
#12398
40K
24.85 mi14:14:483:19:178:017:13
8:26
#12434
25.2M
25.20 mi14:18:013:22:308:023:13
9:20
#12465
Finish
26.22 mi14:26:273:30:568:038:26
8:17
#12518
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi144794311431113507(Top 51%)3780(Top 33%)3780(Top 208%)
10K6.21 mi3.10 mi14347+1324253+584253+5814134(Top 53%)4130(Top 36%)4130(Top 227%)
15K9.32 mi3.11 mi14059+2884094+1594094+15913507(Top 51%)3780(Top 33%)3780(Top 208%)
20K12.43 mi3.11 mi13389+6703715+3793715+37911293(Top 42%)2573(Top 23%)2573(Top 142%)
Half13.11 mi0.68 mi13311+783670+453670+4512312(Top 46%)3104(Top 27%)3104(Top 171%)
25K15.53 mi2.42 mi12828+4833415+2553415+25510762(Top 40%)2375(Top 21%)2375(Top 131%)
30K18.64 mi3.11 mi12610+2183325+903325+9011814(Top 44%)3074(Top 27%)3074(Top 169%)
20M20.00 mi1.36 mi12542+683298+273298+2711909(Top 45%)3225(Top 28%)3225(Top 177%)
21M21.00 mi1.00 mi12522+203311-133311-1312773(Top 48%)3824(Top 33%)3824(Top 210%)
35K21.75 mi0.75 mi12471+513298+133298+1311347(Top 43%)3054(Top 27%)3054(Top 168%)
23M23.00 mi1.25 mi12447+243298329812148(Top 46%)3598(Top 31%)3598(Top 198%)
24M24.00 mi1.00 mi12398+493293+53293+511854(Top 45%)3516(Top 31%)3516(Top 194%)
40K24.85 mi0.85 mi12434-363331-383331-3812994(Top 49%)4198(Top 37%)4198(Top 231%)
25.2M25.20 mi0.35 mi12465-313367-363367-3614339(Top 54%)4909(Top 43%)4909(Top 270%)
Finish26.22 mi1.02 mi12518-533417-503417-5013954(Top 52%)4705(Top 41%)4705(Top 259%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

13507

Females

3780

F45-49

3780

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14134

Females

4130

F45-49

4130

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

13507

Females

3780

F45-49

3780

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11293

Females

2573

F45-49

2573

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12312

Females

3104

F45-49

3104

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

10762

Females

2375

F45-49

2375

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

11814

Females

3074

F45-49

3074

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

11909

Females

3225

F45-49

3225

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

12773

Females

3824

F45-49

3824

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

11347

Females

3054

F45-49

3054

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

12148

Females

3598

F45-49

3598

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

11854

Females

3516

F45-49

3516

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

12994

Females

4198

F45-49

4198

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14339

Females

4909

F45-49

4909

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

13954

Females

4705

F45-49

4705

Passing Analysis

Category:
Athletes Passed
2881
Passed By
920
Net Change
+1961
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14479
5K → 10K361229+132#14479#14347
10K → 15K35971+288#14347#14059
15K → 20K6755+670#14059#13389
20K → Half879+78#13389#13311
Half → 25K4852+483#13311#12828
25K → 30K29678+218#12828#12610
30K → 20M14375+68#12610#12542
20M → 21M10282+20#12542#12522
21M → 35K7019+51#12522#12471
35K → 23M9167+24#12471#12447
23M → 24M8637+49#12447#12398
24M → 40K4682-36#12398#12434
40K → 25.2M2859-31#12434#12465
25.2M → Finish52105-53#12465#12518
TOTALS2881920+1961
📊

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