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BOSTON MARATHON 2025

Nicholas Chan

Bib: 1275•M

MN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 8%
Division (M18-39)
#0 / 5642
Top 20%
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
5:55/mi
18:22
↑ 97↓ 3451.5%
10K· 6.21 mi
5:45/mi
36:13
↑ 79↓ 1380.4%
15K· 9.32 mi
5:51/mi
54:22
↑ 67↓ 78
20K· 12.43 mi
5:56/mi
1:12:48
↑ 106↓ 860.1%
Half· 13.11 mi
5:55/mi
1:16:50
↑ 19↓ 370.5%
25K· 15.53 mi
6:01/mi
1:31:26
↑ 66↓ 880.2%
30K· 18.64 mi
6:18/mi
1:51:01
↑ 181↓ 1480.2%
20M
6:34/mi
1:59:57
↑ 64↓ 500.2%
21M
6:58/mi
2:06:55
↑ 106↓ 241.6%
35K· 21.75 mi
6:14/mi
2:11:35
↑ 17↓ 861.7%
23M
7:07/mi
2:20:30
↑ 23↓ 630.6%
24M
7:02/mi
2:27:32
↓ 821.3%
40K· 24.85 mi
7:16/mi
2:33:45
↓ 200.3%
25.2M
8:10/mi
2:36:34
↑ 13↓ 160.2%
Finish· 26.22 mi
8:11/mi
2:44:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:16:50
Pace5:52 /mi
2nd Half
Distance13.11 mi
Time1:28:04
Pace6:43 /mi
📊Positive Split: 14.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:1318:225:5518:22
5:55
-
10K
6.21 mi10:37:0436:135:5017:51
5:45
-0:10
15K
9.32 mi10:55:1354:225:5018:09
5:51
+0:06
20K
12.43 mi11:13:391:12:485:5118:26
5:56
+0:05
Half
13.11 mi11:17:411:16:505:524:02
5:55
-0:01
25K
15.53 mi11:32:171:31:265:5314:36
6:01
+0:06
30K
18.64 mi11:51:521:51:015:5719:35
6:18
+0:17
20M
20.00 mi12:00:481:59:576:008:56
6:34
+0:16
21M
21.00 mi12:07:462:06:556:036:58
6:58
+0:24
35K
21.75 mi12:12:262:11:356:034:40
6:14
-0:44
23M
23.00 mi12:21:212:20:306:078:55
7:07
+0:53
24M
24.00 mi12:28:232:27:326:097:02
7:02
-0:05
40K
24.85 mi12:34:362:33:456:116:13
7:16
+0:14
25.2M
25.20 mi12:37:252:36:346:132:49
8:10
+0:54
Finish
26.22 mi12:45:452:44:546:188:20
8:11
+0:01

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

5:45 /mi

Average Pace

6:18 /mi

Slowest Pace

8:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

36:00

22% of race

Time at Steady Pace

1:28:37

54% of race

Time at Slower Pace

40:17

24% of race

Average Pace: 6:17 /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 mi10:19:1318:225:5518:22
5:55
#822
10K
6.21 mi10:37:0436:135:5017:51
5:45
#647
15K
9.32 mi10:55:1354:225:5018:09
5:51
#628
20K
12.43 mi11:13:391:12:485:5118:26
5:56
#631
Half
13.11 mi11:17:411:16:505:524:02
5:55
#643
25K
15.53 mi11:32:171:31:265:5314:36
6:01
#663
30K
18.64 mi11:51:521:51:015:5719:35
6:18
#730
20M
20.00 mi12:00:481:59:576:008:56
6:34
#768
21M
21.00 mi12:07:462:06:556:036:58
6:58
#796
35K
21.75 mi12:12:262:11:356:034:40
6:14
#800
23M
23.00 mi12:21:212:20:306:078:55
7:07
#903
24M
24.00 mi12:28:232:27:326:097:02
7:02
#983
40K
24.85 mi12:34:362:33:456:116:13
7:16
#1073
25.2M
25.20 mi12:37:252:36:346:132:49
8:10
#1118
Finish
26.22 mi12:45:452:44:546:188:20
8:11
#1372
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi822768768618(Top 2%)575(Top 4%)575(Top 10%)
10K6.21 mi3.10 mi647+175601+167601+167529(Top 2%)491(Top 3%)491(Top 9%)
15K9.32 mi3.11 mi628+19583+18583+18618(Top 2%)575(Top 4%)575(Top 10%)
20K12.43 mi3.11 mi631-3584-1584-1704(Top 2%)657(Top 4%)657(Top 12%)
Half13.11 mi0.68 mi643-12596-12596-12883(Top 3%)835(Top 5%)835(Top 15%)
25K15.53 mi2.42 mi663-20616-20616-20866(Top 3%)813(Top 5%)813(Top 14%)
30K18.64 mi3.11 mi730-67683-67683-671218(Top 4%)1149(Top 7%)1149(Top 20%)
20M20.00 mi1.36 mi768-38719-36719-361895(Top 7%)1792(Top 11%)1792(Top 32%)
21M21.00 mi1.00 mi796-28746-27746-272105(Top 7%)1970(Top 12%)1970(Top 35%)
35K21.75 mi0.75 mi800-4750-4750-41361(Top 5%)1288(Top 8%)1288(Top 23%)
23M23.00 mi1.25 mi903-103847-97847-974422(Top 16%)3889(Top 24%)3889(Top 69%)
24M24.00 mi1.00 mi983-80925-78925-784776(Top 17%)4090(Top 25%)4090(Top 72%)
40K24.85 mi0.85 mi1073-901011-861011-865436(Top 19%)4496(Top 28%)4496(Top 80%)
25.2M25.20 mi0.35 mi1118-451053-421053-426741(Top 24%)5160(Top 32%)5160(Top 91%)
Finish26.22 mi1.02 mi1372-2541293-2401293-24014077(Top 50%)9036(Top 56%)9036(Top 160%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21story building
+97ft-345ft

Overall

618

Males

575

M18-39

575

5K→10K

3.1 - 6.2 mi

Top 2%
×5story building
+79ft-138ft

Overall

529

Males

491

M18-39

491

10K→15K

6.2 - 9.3 mi

Top 2%
×3story building
+67ft-78ft

Overall

618

Males

575

M18-39

575

15K→20K

9.3 - 12.4 mi

Top 2%
×5story building
+106ft-86ft

Overall

704

Males

657

M18-39

657

20K→Half

12.4 - 13.1 mi

Top 3%
×2story building
+19ft-37ft

Overall

883

Males

835

M18-39

835

Half→25K

13.1 - 15.5 mi

Top 3%
×4story building
+66ft-88ft

Overall

866

Males

813

M18-39

813

25K→30K

15.5 - 18.6 mi

Top 4%
×9story building
+181ft-148ft

Overall

1218

Males

1149

M18-39

1149

30K→20M

18.6 - 20.0 mi

Top 7%
×5story building
+64ft-50ft

Overall

1895

Males

1792

M18-39

1792

20M→21M

20.0 - 21.0 mi

Top 7%
×8story building
+106ft-24ft

Overall

2105

Males

1970

M18-39

1970

21M→35K

21.0 - 21.8 mi

Top 5%
×7story building
+17ft-86ft

Overall

1361

Males

1288

M18-39

1288

35K→23M

21.8 - 23.0 mi

Top 16%
×5story building
+23ft-63ft

Overall

4422

Males

3889

M18-39

3889

23M→24M

23.0 - 24.0 mi

Top 17%
×6story building
+12ft-82ft

Overall

4776

Males

4090

M18-39

4090

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5436

Males

4496

M18-39

4496

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6741

Males

5160

M18-39

5160

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

14077

Males

9036

M18-39

9036

Passing Analysis

Category:
Athletes Passed
303
Passed By
853
Net Change
-550
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#822
5K → 10K1772+175#822#647
10K → 15K267+19#647#628
15K → 20K2629-3#628#631
20K → Half113-12#631#643
Half → 25K1838-20#643#663
25K → 30K1885-67#663#730
30K → 20M846-38#730#768
20M → 21M533-28#768#796
21M → 35K1519-4#796#800
35K → 23M2105-103#800#903
23M → 24M282-80#903#983
24M → 40K292-90#983#1073
40K → 25.2M348-45#1073#1118
25.2M → Finish0254-254#1118#1372
TOTALS303853-550
📊

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