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BOSTON MARATHON 2023

Amy Anderson

Bib: 20336•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
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
8:56/mi
27:44
↑ 97↓ 3451.5%
10K· 6.21 mi
9:39/mi
57:44
↑ 79↓ 1380.4%
15K· 9.32 mi
9:06/mi
1:26:00
↑ 67↓ 78
20K· 12.43 mi
9:17/mi
1:54:49
↑ 106↓ 860.1%
Half· 13.11 mi
9:36/mi
2:01:22
↑ 19↓ 370.5%
25K· 15.53 mi
9:24/mi
2:24:09
↑ 66↓ 880.2%
30K· 18.64 mi
9:29/mi
2:53:37
↑ 181↓ 1480.2%
20M
9:41/mi
3:06:46
↑ 64↓ 500.2%
21M
10:20/mi
3:17:06
↑ 106↓ 241.6%
35K· 21.75 mi
9:19/mi
3:24:04
↑ 17↓ 861.7%
23M
9:39/mi
3:36:09
↑ 23↓ 630.6%
24M
9:47/mi
3:45:56
↓ 821.3%
40K· 24.85 mi
9:13/mi
3:53:49
↓ 200.3%
25.2M
9:37/mi
3:57:08
↑ 13↓ 160.2%
Finish· 26.22 mi
8:33/mi
4:05:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:22
Pace9:15 /mi
2nd Half
Distance13.11 mi
Time2:04:29
Pace9:30 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1727:448:5627:44
8:56
-
10K
6.21 mi11:50:1757:449:1730:00
9:39
+0:43
15K
9.32 mi12:18:331:26:009:1428:16
9:06
-0:33
20K
12.43 mi12:47:221:54:499:1428:49
9:17
+0:11
Half
13.11 mi12:53:552:01:229:156:33
9:36
+0:19
25K
15.53 mi13:16:422:24:099:1722:47
9:24
-0:12
30K
18.64 mi13:46:102:53:379:1929:28
9:29
+0:05
20M
20.00 mi13:59:193:06:469:2013:09
9:41
+0:12
21M
21.00 mi14:09:393:17:069:2310:20
10:20
+0:39
35K
21.75 mi14:16:373:24:049:236:58
9:19
-1:01
23M
23.00 mi14:28:423:36:099:2412:05
9:39
+0:20
24M
24.00 mi14:38:293:45:569:259:47
9:47
+0:08
40K
24.85 mi14:46:223:53:499:247:53
9:13
-0:34
25.2M
25.20 mi14:49:413:57:089:253:19
9:37
+0:24
Finish
26.22 mi14:58:244:05:519:238:43
8:33
-1:04

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

8:33 /mi

Average Pace

9:23 /mi

Slowest Pace

10:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:25

41% of race

Time at Steady Pace

1:51:10

45% of race

Time at Slower Pace

33:16

14% of race

Average Pace: 9:23 /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 mi11:20:1727:448:5627:44
8:56
#20108
10K
6.21 mi11:50:1757:449:1730:00
9:39
#21699
15K
9.32 mi12:18:331:26:009:1428:16
9:06
#21456
20K
12.43 mi12:47:221:54:499:1428:49
9:17
#21309
Half
13.11 mi12:53:552:01:229:156:33
9:36
#21373
25K
15.53 mi13:16:422:24:099:1722:47
9:24
#21220
30K
18.64 mi13:46:102:53:379:1929:28
9:29
#20880
20M
20.00 mi13:59:193:06:469:2013:09
9:41
#20735
21M
21.00 mi14:09:393:17:069:2310:20
10:20
#20634
35K
21.75 mi14:16:373:24:049:236:58
9:19
#20574
23M
23.00 mi14:28:423:36:099:2412:05
9:39
#20457
24M
24.00 mi14:38:293:45:569:259:47
9:47
#20437
40K
24.85 mi14:46:223:53:499:247:53
9:13
#20328
25.2M
25.20 mi14:49:413:57:089:253:19
9:37
#20259
Finish
26.22 mi14:58:244:05:519:238:43
8:33
#20135
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi201087882788220940(Top 79%)8202(Top 72%)8202(Top 451%)
10K6.21 mi3.10 mi21699-15918687-8058687-80522944(Top 86%)9305(Top 81%)9305(Top 512%)
15K9.32 mi3.11 mi21456+2438530+1578530+15720940(Top 79%)8202(Top 72%)8202(Top 451%)
20K12.43 mi3.11 mi21309+1478436+948436+9420887(Top 78%)8163(Top 71%)8163(Top 449%)
Half13.11 mi0.68 mi21373-648473-378473-3722384(Top 84%)8992(Top 79%)8992(Top 495%)
25K15.53 mi2.42 mi21220+1538391+828391+8220514(Top 77%)7995(Top 70%)7995(Top 440%)
30K18.64 mi3.11 mi20880+3408202+1898202+18919383(Top 73%)7407(Top 65%)7407(Top 408%)
20M20.00 mi1.36 mi20735+1458143+598143+5919509(Top 73%)7577(Top 66%)7577(Top 417%)
21M21.00 mi1.00 mi20634+1018101+428101+4219135(Top 72%)7421(Top 65%)7421(Top 408%)
35K21.75 mi0.75 mi20574+608077+248077+2419239(Top 72%)7522(Top 66%)7522(Top 414%)
23M23.00 mi1.25 mi20457+1178029+488029+4818921(Top 71%)7365(Top 64%)7365(Top 405%)
24M24.00 mi1.00 mi20437+208029802920179(Top 76%)8072(Top 71%)8072(Top 444%)
40K24.85 mi0.85 mi20328+1097974+557974+5517223(Top 65%)6535(Top 57%)6535(Top 360%)
25.2M25.20 mi0.35 mi20259+697941+337941+3315853(Top 60%)5809(Top 51%)5809(Top 320%)
Finish26.22 mi1.02 mi20135+1247885+567885+5615776(Top 59%)5696(Top 50%)5696(Top 313%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

20940

Females

8202

F45-49

8202

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

22944

Females

9305

F45-49

9305

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

20940

Females

8202

F45-49

8202

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

20887

Females

8163

F45-49

8163

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

22384

Females

8992

F45-49

8992

Half→25K

13.1 - 15.5 mi

Top 77%
×4story building
+66ft-88ft

Overall

20514

Females

7995

F45-49

7995

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

19383

Females

7407

F45-49

7407

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

19509

Females

7577

F45-49

7577

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

19135

Females

7421

F45-49

7421

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

19239

Females

7522

F45-49

7522

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

18921

Females

7365

F45-49

7365

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

20179

Females

8072

F45-49

8072

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

17223

Females

6535

F45-49

6535

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15853

Females

5809

F45-49

5809

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15776

Females

5696

F45-49

5696

Passing Analysis

Category:
Athletes Passed
1940
Passed By
1967
Net Change
-27
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20108
5K → 10K131604-1591#20108#21699
10K → 15K30461+243#21699#21456
15K → 20K21972+147#21456#21309
20K → Half973-64#21309#21373
Half → 25K18532+153#21373#21220
25K → 30K35919+340#21220#20880
30K → 20M16419+145#20880#20735
20M → 21M12221+101#20735#20634
21M → 35K7313+60#20634#20574
35K → 23M13114+117#20574#20457
23M → 24M5434+20#20457#20437
24M → 40K1112+109#20437#20328
40K → 25.2M690+69#20328#20259
25.2M → Finish1273+124#20259#20135
TOTALS19401967-27
📊

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