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BOSTON MARATHON 2025

Yukiko Suwa

Bib: 14821•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 45%
Gender (Female)
#0 / 12228
Top 29%
Masters (Masters Women)
#0 / 6759
Top 14%
Division (F50-54)
#0 / 1303
Top 8%
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
7:16/mi
22:34
↑ 97↓ 3451.5%
10K· 6.21 mi
7:28/mi
45:46
↑ 79↓ 1380.4%
15K· 9.32 mi
7:32/mi
1:09:11
↑ 67↓ 78
20K· 12.43 mi
7:50/mi
1:33:31
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:38:49
↑ 19↓ 370.5%
25K· 15.53 mi
7:58/mi
1:58:07
↑ 66↓ 880.2%
30K· 18.64 mi
8:17/mi
2:23:52
↑ 181↓ 1480.2%
20M
8:24/mi
2:35:17
↑ 64↓ 500.2%
21M
8:57/mi
2:44:14
↑ 106↓ 241.6%
35K· 21.75 mi
8:03/mi
2:50:15
↑ 17↓ 861.7%
23M
8:25/mi
3:00:47
↑ 23↓ 630.6%
24M
8:17/mi
3:09:04
↓ 821.3%
40K· 24.85 mi
8:32/mi
3:16:22
↓ 200.3%
25.2M
9:43/mi
3:19:43
↑ 13↓ 160.2%
Finish· 26.22 mi
8:26/mi
3:28:19
↑ 22↓ 21

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
Time1:49:30
Pace8:21 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:1522:347:1622:34
7:16
-
10K
6.21 mi11:17:2745:467:2223:12
7:28
+0:12
15K
9.32 mi11:40:521:09:117:2523:25
7:32
+0:04
20K
12.43 mi12:05:121:33:317:3224:20
7:50
+0:18
Half
13.11 mi12:10:301:38:497:325:18
7:46
-0:04
25K
15.53 mi12:29:481:58:077:3619:18
7:58
+0:12
30K
18.64 mi12:55:332:23:527:4325:45
8:17
+0:19
20M
20.00 mi13:06:582:35:177:4611:25
8:24
+0:07
21M
21.00 mi13:15:552:44:147:498:57
8:57
+0:33
35K
21.75 mi13:21:562:50:157:506:01
8:03
-0:54
23M
23.00 mi13:32:283:00:477:5210:32
8:25
+0:22
24M
24.00 mi13:40:453:09:047:538:17
8:17
-0:08
40K
24.85 mi13:48:033:16:227:547:18
8:32
+0:15
25.2M
25.20 mi13:51:243:19:437:563:21
9:43
+1:11
Finish
26.22 mi14:00:003:28:197:578:36
8:26
-1:17

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

7:16 /mi

Average Pace

7:57 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:07

57% of race

Time at Steady Pace

1:17:54

37% of race

Time at Slower Pace

12:18

6% of race

Average Pace: 7:57 /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 mi10:54:1522:347:1622:34
7:16
#10030
10K
6.21 mi11:17:2745:467:2223:12
7:28
#10922
15K
9.32 mi11:40:521:09:117:2523:25
7:32
#11280
20K
12.43 mi12:05:121:33:317:3224:20
7:50
#11858
Half
13.11 mi12:10:301:38:497:325:18
7:46
#11967
25K
15.53 mi12:29:481:58:077:3619:18
7:58
#12216
30K
18.64 mi12:55:332:23:527:4325:45
8:17
#12417
20M
20.00 mi13:06:582:35:177:4611:25
8:24
#12442
21M
21.00 mi13:15:552:44:147:498:57
8:57
#12467
35K
21.75 mi13:21:562:50:157:506:01
8:03
#12444
23M
23.00 mi13:32:283:00:477:5210:32
8:25
#12442
24M
24.00 mi13:40:453:09:047:538:17
8:17
#12463
40K
24.85 mi13:48:033:16:227:547:18
8:32
#12481
25.2M
25.20 mi13:51:243:19:437:563:21
9:43
#12551
Finish
26.22 mi14:00:003:28:197:578:36
8:26
#12682
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi100301825182512103(Top 43%)2961(Top 24%)2961(Top 227%)
10K6.21 mi3.10 mi10922-8922268-4432268-44311803(Top 42%)2717(Top 22%)2717(Top 209%)
15K9.32 mi3.11 mi11280-3582466-1982466-19812103(Top 43%)2961(Top 24%)2961(Top 227%)
20K12.43 mi3.11 mi11858-5782793-3272793-32713539(Top 48%)3839(Top 31%)3839(Top 295%)
Half13.11 mi0.68 mi11967-1092857-642857-6414026(Top 49%)4059(Top 33%)4059(Top 312%)
25K15.53 mi2.42 mi12216-2493029-1723029-17213587(Top 48%)3987(Top 33%)3987(Top 306%)
30K18.64 mi3.11 mi12417-2013224-1953224-19513424(Top 47%)4064(Top 33%)4064(Top 312%)
20M20.00 mi1.36 mi12442-253276-523276-5213174(Top 46%)4066(Top 33%)4066(Top 312%)
21M21.00 mi1.00 mi12467-253323-473323-4713224(Top 47%)4223(Top 35%)4223(Top 324%)
35K21.75 mi0.75 mi12444+233334-113334-1112567(Top 44%)3930(Top 32%)3930(Top 302%)
23M23.00 mi1.25 mi12442+23374-403374-4012786(Top 45%)4152(Top 34%)4152(Top 319%)
24M24.00 mi1.00 mi12463-213407-333407-3313151(Top 46%)4390(Top 36%)4390(Top 337%)
40K24.85 mi0.85 mi12481-183447-403447-4013679(Top 48%)4790(Top 39%)4790(Top 368%)
25.2M25.20 mi0.35 mi12551-703502-553502-5515694(Top 55%)5905(Top 48%)5905(Top 453%)
Finish26.22 mi1.02 mi12682-1313599-973599-9715836(Top 56%)5925(Top 48%)5925(Top 455%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21story building
+97ft-345ft

Overall

12103

Females

2961

F50-54

2961

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11803

Females

2717

F50-54

2717

10K→15K

6.2 - 9.3 mi

Top 43%
×3story building
+67ft-78ft

Overall

12103

Females

2961

F50-54

2961

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

13539

Females

3839

F50-54

3839

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

14026

Females

4059

F50-54

4059

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

13587

Females

3987

F50-54

3987

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

13424

Females

4064

F50-54

4064

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

13174

Females

4066

F50-54

4066

20M→21M

20.0 - 21.0 mi

Top 47%
×8story building
+106ft-24ft

Overall

13224

Females

4223

F50-54

4223

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

12567

Females

3930

F50-54

3930

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

12786

Females

4152

F50-54

4152

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

13151

Females

4390

F50-54

4390

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13679

Females

4790

F50-54

4790

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15694

Females

5905

F50-54

5905

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

15836

Females

5925

F50-54

5925

Passing Analysis

Category:
Athletes Passed
1085
Passed By
3736
Net Change
-2652
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10030
5K → 10K43934-892#10030#10922
10K → 15K100458-358#10922#11280
15K → 20K59637-578#11280#11858
20K → Half16125-109#11858#11967
Half → 25K94343-249#11967#12216
25K → 30K186387-201#12216#12417
30K → 20M112137-25#12417#12442
20M → 21M96121-25#12442#12467
21M → 35K7249+23#12467#12444
35K → 23M116114+2#12444#12442
23M → 24M6788-21#12442#12463
24M → 40K6684-18#12463#12481
40K → 25.2M2191-70#12481#12551
25.2M → Finish37168-131#12551#12682
TOTALS10853736-2652
📊

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