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BOSTON MARATHON 2025

Louis Tse

CA

Bib: 5888 M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 30%
Gender (Male)
#0 / 16105
Top 44%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:47/mi
21:06
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:58/mi
42:45
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:03/mi
1:04:40
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:15/mi
1:27:11
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:58/mi
1:31:56
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:13/mi
1:49:25
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:51/mi
2:13:47
↑ 181↓ 1480.2%
138 ft elev
20M
7:59/mi
2:24:38
↑ 64↓ 500.2%
148 ft elev
21M
8:37/mi
2:33:15
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:46/mi
2:39:04
↑ 17↓ 861.7%
156 ft elev
23M
8:49/mi
2:50:06
↑ 23↓ 630.6%
116 ft elev
24M
7:40/mi
2:57:46
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:53/mi
3:04:30
↓ 200.3%
20 ft elev
25.2M
8:48/mi
3:07:32
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:33/mi
3:15:14
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:56
Pace7:01 /mi
2nd Half
Distance13.11 mi
Time1:43:18
Pace7:53 /mi
📊Positive Split: 12.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:0221:066:4721:06
6:47
-
10K
6.21 mi10:47:4142:456:5321:39
6:58
+0:11
15K
9.32 mi11:09:361:04:406:5621:55
7:03
+0:05
20K
12.43 mi11:32:071:27:117:0122:31
7:15
+0:12
Half
13.11 mi11:36:521:31:567:014:45
6:58
-0:17
25K
15.53 mi11:54:211:49:257:0317:29
7:13
+0:15
30K
18.64 mi12:18:432:13:477:1124:22
7:51
+0:38
20M
20.00 mi12:29:342:24:387:1410:51
7:59
+0:08
21M
21.00 mi12:38:112:33:157:188:37
8:37
+0:38
35K
21.75 mi12:44:002:39:047:195:49
7:46
-0:51
23M
23.00 mi12:55:022:50:067:2411:02
8:49
+1:03
24M
24.00 mi13:02:422:57:467:247:40
7:40
-1:09
40K
24.85 mi13:09:263:04:307:256:44
7:53
+0:13
25.2M
25.20 mi13:12:283:07:327:273:02
8:48
+0:55
Finish
26.22 mi13:20:103:15:147:277:42
7:33
-1:15

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

6:47 /mi

Average Pace

7:27 /mi

Slowest Pace

8:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:25

56% of race

Time at Steady Pace

1:03:08

32% of race

Time at Slower Pace

22:41

12% of race

Average Pace: 7:27 /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 mi10:26:0221:066:4721:06
6:47
#6252
10K
6.21 mi10:47:4142:456:5321:39
6:58
#7009
15K
9.32 mi11:09:361:04:406:5621:55
7:03
#7364
20K
12.43 mi11:32:071:27:117:0122:31
7:15
#7588
Half
13.11 mi11:36:521:31:567:014:45
6:58
#7576
25K
15.53 mi11:54:211:49:257:0317:29
7:13
#7544
30K
18.64 mi12:18:432:13:477:1124:22
7:51
#7875
20M
20.00 mi12:29:342:24:387:1410:51
7:59
#7994
21M
21.00 mi12:38:112:33:157:188:37
8:37
#8112
35K
21.75 mi12:44:002:39:047:195:49
7:46
#8174
23M
23.00 mi12:55:022:50:067:2411:02
8:49
#8594
24M
24.00 mi13:02:422:57:467:247:40
7:40
#8583
40K
24.85 mi13:09:263:04:307:256:44
7:53
#8569
25.2M
25.20 mi13:12:283:07:327:273:02
8:48
#8589
Finish
26.22 mi13:20:103:15:147:277:42
7:33
#8630
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6252572457247989(Top 28%)6935(Top 43%)6935(Top 123%)
10K6.21 mi3.10 mi7009-7576299-5756299-5757711(Top 27%)6784(Top 42%)6784(Top 120%)
15K9.32 mi3.11 mi7364-3556550-2516550-2517989(Top 28%)6935(Top 43%)6935(Top 123%)
20K12.43 mi3.11 mi7588-2246688-1386688-1388587(Top 30%)7216(Top 45%)7216(Top 128%)
Half13.11 mi0.68 mi7576+126677+116677+117299(Top 26%)6441(Top 40%)6441(Top 114%)
25K15.53 mi2.42 mi7544+326638+396638+397691(Top 27%)6572(Top 41%)6572(Top 116%)
30K18.64 mi3.11 mi7875-3316800-1626800-16210221(Top 36%)7799(Top 48%)7799(Top 138%)
20M20.00 mi1.36 mi7994-1196829-296829-2910315(Top 36%)7688(Top 48%)7688(Top 136%)
21M21.00 mi1.00 mi8112-1186875-466875-4611158(Top 39%)7943(Top 49%)7943(Top 141%)
35K21.75 mi0.75 mi8174-626899-246899-2410570(Top 37%)7639(Top 47%)7639(Top 135%)
23M23.00 mi1.25 mi8594-4207101-2027101-20215152(Top 53%)9687(Top 60%)9687(Top 172%)
24M24.00 mi1.00 mi8583+117067+347067+348877(Top 31%)6584(Top 41%)6584(Top 117%)
40K24.85 mi0.85 mi8569+147017+507017+509270(Top 33%)6663(Top 41%)6663(Top 118%)
25.2M25.20 mi0.35 mi8589-207010+77010+710520(Top 37%)7212(Top 45%)7212(Top 128%)
Finish26.22 mi1.02 mi8630-417008+27008+29573(Top 34%)6745(Top 42%)6745(Top 120%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

7989

Males

6935

M18-39

6935

5K→10K

3.1 - 6.2 mi

Top 27%
×5story building
+79ft-138ft

Overall

7711

Males

6784

M18-39

6784

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

7989

Males

6935

M18-39

6935

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

8587

Males

7216

M18-39

7216

20K→Half

12.4 - 13.1 mi

Top 26%
×2story building
+19ft-37ft

Overall

7299

Males

6441

M18-39

6441

Half→25K

13.1 - 15.5 mi

Top 27%
×4story building
+66ft-88ft

Overall

7691

Males

6572

M18-39

6572

25K→30K

15.5 - 18.6 mi

Top 36%
×9story building
+181ft-148ft

Overall

10221

Males

7799

M18-39

7799

30K→20M

18.6 - 20.0 mi

Top 36%
×5story building
+64ft-50ft

Overall

10315

Males

7688

M18-39

7688

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

11158

Males

7943

M18-39

7943

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

10570

Males

7639

M18-39

7639

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

15152

Males

9687

M18-39

9687

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8877

Males

6584

M18-39

6584

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9270

Males

6663

M18-39

6663

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

10520

Males

7212

M18-39

7212

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9573

Males

6745

M18-39

6745

Passing Analysis

Category:
Athletes Passed
892
Passed By
3270
Net Change
-2378
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6252
5K → 10K40797-757#6252#7009
10K → 15K53408-355#7009#7364
15K → 20K71295-224#7364#7588
20K → Half2614+12#7588#7576
Half → 25K12593+32#7576#7544
25K → 30K102433-331#7544#7875
30K → 20M61180-119#7875#7994
20M → 21M63181-118#7994#8112
21M → 35K46108-62#8112#8174
35K → 23M39459-420#8174#8594
23M → 24M8574+11#8594#8583
24M → 40K9177+14#8583#8569
40K → 25.2M3353-20#8569#8589
25.2M → Finish5798-41#8589#8630
TOTALS8923270-2378
📊

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