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BOSTON MARATHON 2023

Amanda Sanford

Bib: 14745•F

OR

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0:00
/ mi
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 17%
Division (F18-39)
#0 / 4884
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:29
Rank: #10158
Start → 5K
23:29 | 7:34/mi
10K· 6.21 mi
46:56
Rank: #10508 (-350)
5K → 10K
23:27 | 7:33/mi
15K· 9.32 mi
1:10:25
Rank: #10547 (-39)
10K → 15K
23:29 | 7:34/mi
20K· 12.43 mi
1:33:47
Rank: #10246 (+301)
15K → 20K
23:22 | 7:31/mi
Half· 13.11 mi
1:38:49
Rank: #10179 (+67)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:57:25
Rank: #10127 (+52)
Half → 25K
18:36 | 7:40/mi
30K· 18.64 mi
2:22:01
Rank: #10118 (+9)
25K → 30K
24:36 | 7:55/mi
20M
2:32:40
Rank: #10011 (+107)
30K → 20M
10:39 | 7:50/mi
21M
2:40:53
Rank: #9903 (+108)
20M → 21M
8:13 | 8:13/mi
35K· 21.75 mi
2:46:38
Rank: #9900 (+3)
21M → 35K
5:45 | 7:41/mi
23M
2:56:37
Rank: #9835 (+65)
35K → 23M
9:59 | 7:58/mi
24M
3:04:23
Rank: #9794 (+41)
23M → 24M
7:46 | 7:46/mi
40K· 24.85 mi
3:10:53
Rank: #9665 (+129)
24M → 40K
6:30 | 7:36/mi
25.2M
3:13:42
Rank: #9608 (+57)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:21:21
Rank: #9548 (+60)
25.2M → Finish
7:39 | 7:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:49
Pace7:32 /mi
2nd Half
Distance13.11 mi
Time1:42:32
Pace7:49 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:4623:297:3423:29
7:34
-
10K
6.21 mi11:17:1346:567:3323:27
7:33
-0:01
15K
9.32 mi11:40:421:10:257:3323:29
7:34
+0:01
20K
12.43 mi12:04:041:33:477:3323:22
7:31
-0:03
Half
13.11 mi12:09:061:38:497:325:02
7:23
-0:08
25K
15.53 mi12:27:421:57:257:3418:36
7:40
+0:17
30K
18.64 mi12:52:182:22:017:3724:36
7:55
+0:15
20M
20.00 mi13:02:572:32:407:3810:39
7:50
-0:05
21M
21.00 mi13:11:102:40:537:408:13
8:13
+0:23
35K
21.75 mi13:16:552:46:387:405:45
7:41
-0:32
23M
23.00 mi13:26:542:56:377:419:59
7:58
+0:17
24M
24.00 mi13:34:403:04:237:417:46
7:46
-0:12
40K
24.85 mi13:41:103:10:537:416:30
7:36
-0:10
25.2M
25.20 mi13:43:593:13:427:412:49
8:10
+0:34
Finish
26.22 mi13:51:383:21:217:417:39
7:30
-0:40

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

7:23 /mi

Average Pace

7:41 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:19

95% of race

Time at Steady Pace

11:02

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:41 /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 mi10:53:4623:297:3423:29
7:34
#10158
10K
6.21 mi11:17:1346:567:3323:27
7:33
#10508
15K
9.32 mi11:40:421:10:257:3323:29
7:34
#10547
20K
12.43 mi12:04:041:33:477:3323:22
7:31
#10246
Half
13.11 mi12:09:061:38:497:325:02
7:23
#10179
25K
15.53 mi12:27:421:57:257:3418:36
7:40
#10127
30K
18.64 mi12:52:182:22:017:3724:36
7:55
#10118
20M
20.00 mi13:02:572:32:407:3810:39
7:50
#10011
21M
21.00 mi13:11:102:40:537:408:13
8:13
#9903
35K
21.75 mi13:16:552:46:387:405:45
7:41
#9900
23M
23.00 mi13:26:542:56:377:419:59
7:58
#9835
24M
24.00 mi13:34:403:04:237:417:46
7:46
#9794
40K
24.85 mi13:41:103:10:537:416:30
7:36
#9665
25.2M
25.20 mi13:43:593:13:427:412:49
8:10
#9608
Finish
26.22 mi13:51:383:21:217:417:39
7:30
#9548
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi101581939193910664(Top 40%)2165(Top 19%)2165(Top 44%)
10K6.21 mi3.10 mi10508-3502076-1372076-13710864(Top 41%)2238(Top 20%)2238(Top 46%)
15K9.32 mi3.11 mi10547-392087-112087-1110664(Top 40%)2165(Top 19%)2165(Top 44%)
20K12.43 mi3.11 mi10246+3011945+1421945+1429485(Top 36%)1684(Top 15%)1684(Top 34%)
Half13.11 mi0.68 mi10179+671924+211924+219322(Top 35%)1614(Top 14%)1614(Top 33%)
25K15.53 mi2.42 mi10127+521915+91915+910093(Top 38%)2033(Top 18%)2033(Top 42%)
30K18.64 mi3.11 mi10118+91947-321947-3210278(Top 39%)2290(Top 20%)2290(Top 47%)
20M20.00 mi1.36 mi10011+1071926+211926+219164(Top 34%)1867(Top 16%)1867(Top 38%)
21M21.00 mi1.00 mi9903+1081904+221904+228725(Top 33%)1810(Top 16%)1810(Top 37%)
35K21.75 mi0.75 mi9900+31918-141918-149864(Top 37%)2289(Top 20%)2289(Top 47%)
23M23.00 mi1.25 mi9835+651921-31921-39587(Top 36%)2297(Top 20%)2297(Top 47%)
24M24.00 mi1.00 mi9794+411932-111932-119544(Top 36%)2354(Top 21%)2354(Top 48%)
40K24.85 mi0.85 mi9665+1291893+391893+397384(Top 28%)1523(Top 13%)1523(Top 31%)
25.2M25.20 mi0.35 mi9608+571890+31890+37579(Top 28%)1649(Top 14%)1649(Top 34%)
Finish26.22 mi1.02 mi9548+601889+11889+18628(Top 32%)2078(Top 18%)2078(Top 43%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

10664

Females

2165

F18-39

2165

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10864

Females

2238

F18-39

2238

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

10664

Females

2165

F18-39

2165

15K→20K

9.3 - 12.4 mi

Top 36%
×5stories
+106ft-86ft

Overall

9485

Females

1684

F18-39

1684

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9322

Females

1614

F18-39

1614

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10093

Females

2033

F18-39

2033

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

10278

Females

2290

F18-39

2290

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

9164

Females

1867

F18-39

1867

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

8725

Females

1810

F18-39

1810

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

9864

Females

2289

F18-39

2289

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9587

Females

2297

F18-39

2297

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

9544

Females

2354

F18-39

2354

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7384

Females

1523

F18-39

1523

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7579

Females

1649

F18-39

1649

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8628

Females

2078

F18-39

2078

Passing Analysis

Category:
Athletes Passed
1889*
Passed By
1279
Net Change
+610
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10158
5K → 10K159*509-350#10158#10508
10K → 15K179218-39#10508#10547
15K → 20K331*30+301#10547#10246
20K → Half769+67#10246#10179
Half → 25K152100+52#10179#10127
25K → 30K169*160+9#10127#10118
30K → 20M14336+107#10118#10011
20M → 21M14436+108#10011#9903
21M → 35K4037+3#9903#9900
35K → 23M11146+65#9900#9835
23M → 24M8039+41#9835#9794
24M → 40K138*9+129#9794#9665
40K → 25.2M7114+57#9665#9608
25.2M → Finish9636+60#9608#9548
TOTALS1889*1279+610

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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