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BOSTON MARATHON 2023

Saiko Uchida

Bib: 14208•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 32%
Gender (Female)
#0 / 11423
Top 13%
Masters (Masters Women)
#0 / 6539
Top 5%
Division (F45-49)
#0 / 1817
Top 4%
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
7:36/mi
23:36
↑ 97↓ 3451.5%
10K· 6.21 mi
7:18/mi
46:17
↑ 79↓ 1380.4%
15K· 9.32 mi
7:14/mi
1:08:44
↑ 67↓ 78
20K· 12.43 mi
7:24/mi
1:31:43
↑ 106↓ 860.1%
Half· 13.11 mi
7:07/mi
1:36:34
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:54:39
↑ 66↓ 880.2%
30K· 18.64 mi
7:45/mi
2:18:45
↑ 181↓ 1480.2%
20M
7:45/mi
2:29:17
↑ 64↓ 500.2%
21M
8:16/mi
2:37:33
↑ 106↓ 241.6%
35K· 21.75 mi
7:18/mi
2:43:01
↑ 17↓ 861.7%
23M
7:48/mi
2:52:47
↑ 23↓ 630.6%
24M
7:42/mi
3:00:29
↓ 821.3%
40K· 24.85 mi
7:51/mi
3:07:12
↓ 200.3%
25.2M
8:30/mi
3:10:08
↑ 13↓ 160.2%
Finish· 26.22 mi
7:32/mi
3:17:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:34
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:41:15
Pace7:43 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4523:367:3623:36
7:36
-
10K
6.21 mi11:15:2646:177:2722:41
7:18
-0:18
15K
9.32 mi11:37:531:08:447:2222:27
7:14
-0:04
20K
12.43 mi12:00:521:31:437:2322:59
7:24
+0:10
Half
13.11 mi12:05:431:36:347:224:51
7:07
-0:17
25K
15.53 mi12:23:481:54:397:2318:05
7:27
+0:20
30K
18.64 mi12:47:542:18:457:2724:06
7:45
+0:18
20M
20.00 mi12:58:262:29:177:2810:32
7:45
0:00
21M
21.00 mi13:06:422:37:337:308:16
8:16
+0:31
35K
21.75 mi13:12:102:43:017:305:28
7:18
-0:58
23M
23.00 mi13:21:562:52:477:319:46
7:48
+0:30
24M
24.00 mi13:29:383:00:297:317:42
7:42
-0:06
40K
24.85 mi13:36:213:07:127:326:43
7:51
+0:09
25.2M
25.20 mi13:39:173:10:087:332:56
8:30
+0:39
Finish
26.22 mi13:46:583:17:497:337:41
7:32
-0:58

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

7:07 /mi

Average Pace

7:33 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:59:54

91% of race

Time at Steady Pace

14:59

8% of race

Time at Slower Pace

2:56

1% of race

Average Pace: 7:33 /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 mi10:52:4523:367:3623:36
7:36
#10507
10K
6.21 mi11:15:2646:177:2722:41
7:18
#9576
15K
9.32 mi11:37:531:08:447:2222:27
7:14
#9010
20K
12.43 mi12:00:521:31:437:2322:59
7:24
#8850
Half
13.11 mi12:05:431:36:347:224:51
7:07
#8761
25K
15.53 mi12:23:481:54:397:2318:05
7:27
#8683
30K
18.64 mi12:47:542:18:457:2724:06
7:45
#8706
20M
20.00 mi12:58:262:29:177:2810:32
7:45
#8670
21M
21.00 mi13:06:422:37:337:308:16
8:16
#8663
35K
21.75 mi13:12:102:43:017:305:28
7:18
#8609
23M
23.00 mi13:21:562:52:477:319:46
7:48
#8560
24M
24.00 mi13:29:383:00:297:317:42
7:42
#8560
40K
24.85 mi13:36:213:07:127:326:43
7:51
#8572
25.2M
25.20 mi13:39:173:10:087:332:56
8:30
#8576
Finish
26.22 mi13:46:583:17:497:337:41
7:32
#8558
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi10507208120817993(Top 30%)1068(Top 9%)1068(Top 59%)
10K6.21 mi3.10 mi9576+9311645+4361645+4368882(Top 33%)1362(Top 12%)1362(Top 75%)
15K9.32 mi3.11 mi9010+5661425+2201425+2207993(Top 30%)1068(Top 9%)1068(Top 59%)
20K12.43 mi3.11 mi8850+1601374+511374+518508(Top 32%)1300(Top 11%)1300(Top 72%)
Half13.11 mi0.68 mi8761+891342+321342+327300(Top 27%)866(Top 8%)866(Top 48%)
25K15.53 mi2.42 mi8683+781326+161326+168484(Top 32%)1355(Top 12%)1355(Top 75%)
30K18.64 mi3.11 mi8706-231373-471373-479038(Top 34%)1722(Top 15%)1722(Top 95%)
20M20.00 mi1.36 mi8670+361382-91382-98525(Top 32%)1603(Top 14%)1603(Top 88%)
21M21.00 mi1.00 mi8663+71398-161398-169036(Top 34%)1933(Top 17%)1933(Top 106%)
35K21.75 mi0.75 mi8609+541391+71391+77232(Top 27%)1194(Top 10%)1194(Top 66%)
23M23.00 mi1.25 mi8560+491394-31394-38440(Top 32%)1767(Top 15%)1767(Top 97%)
24M24.00 mi1.00 mi85601413-191413-199104(Top 34%)2148(Top 19%)2148(Top 118%)
40K24.85 mi0.85 mi8572-121437-241437-249057(Top 34%)2189(Top 19%)2189(Top 120%)
25.2M25.20 mi0.35 mi8576-41446-91446-99594(Top 36%)2477(Top 22%)2477(Top 136%)
Finish26.22 mi1.02 mi8558+181465-191465-198863(Top 33%)2176(Top 19%)2176(Top 120%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

7993

Females

1068

F45-49

1068

5K→10K

3.1 - 6.2 mi

Top 33%
×5story building
+79ft-138ft

Overall

8882

Females

1362

F45-49

1362

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

7993

Females

1068

F45-49

1068

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

8508

Females

1300

F45-49

1300

20K→Half

12.4 - 13.1 mi

Top 27%
×2story building
+19ft-37ft

Overall

7300

Females

866

F45-49

866

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8484

Females

1355

F45-49

1355

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9038

Females

1722

F45-49

1722

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

8525

Females

1603

F45-49

1603

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9036

Females

1933

F45-49

1933

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

7232

Females

1194

F45-49

1194

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

8440

Females

1767

F45-49

1767

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9104

Females

2148

F45-49

2148

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9057

Females

2189

F45-49

2189

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9594

Females

2477

F45-49

2477

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

8863

Females

2176

F45-49

2176

Passing Analysis

Category:
Athletes Passed
2719*
Passed By
770
Net Change
+1949
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10507
5K → 10K979*48+931#10507#9576
10K → 15K57812+566#9576#9010
15K → 20K21454+160#9010#8850
20K → Half901+89#8850#8761
Half → 25K13759+78#8761#8683
25K → 30K162185-23#8683#8706
30K → 20M8852+36#8706#8670
20M → 21M7568+7#8670#8663
21M → 35K7218+54#8663#8609
35K → 23M10758+49#8609#8560
23M → 24M69690#8560#8560
24M → 40K5264-12#8560#8572
40K → 25.2M2832-4#8572#8576
25.2M → Finish6850+18#8576#8558
TOTALS2719*770+1949

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

📊

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