Boston Marathon logo
BOSTON MARATHON 2025

James Hwang

Bib: 13313•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 30%
Gender (Male)
#0 / 16105
Top 43%
Masters (Masters Men)
#0 / 10463
Top 31%
Division (M50-54)
#0 / 1996
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:47
Rank: #10684
Start → 5K
22:47 | 7:20/mi
10K· 6.21 mi
45:23
Rank: #10359 (+325)
5K → 10K
22:36 | 7:16/mi
15K· 9.32 mi
1:08:30
Rank: #10629 (-270)
10K → 15K
23:07 | 7:26/mi
20K· 12.43 mi
1:31:20
Rank: #10301 (+328)
15K → 20K
22:50 | 7:21/mi
Half· 13.11 mi
1:36:16
Rank: #10240 (+61)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:54:14
Rank: #10029 (+211)
Half → 25K
17:58 | 7:25/mi
30K· 18.64 mi
2:17:48
Rank: #9634 (+395)
25K → 30K
23:34 | 7:35/mi
20M
2:28:08
Rank: #9436 (+198)
30K → 20M
10:20 | 7:36/mi
21M
2:36:05
Rank: #9247 (+189)
20M → 21M
7:57 | 7:57/mi
35K· 21.75 mi
2:41:38
Rank: #9172 (+75)
21M → 35K
5:33 | 7:25/mi
23M
2:51:06
Rank: #8973 (+199)
35K → 23M
9:28 | 7:34/mi
24M
2:58:42
Rank: #8916 (+57)
23M → 24M
7:36 | 7:36/mi
40K· 24.85 mi
3:05:07
Rank: #8784 (+132)
24M → 40K
6:25 | 7:30/mi
25.2M
3:07:53
Rank: #8708 (+76)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:14:59
Rank: #8547 (+161)
25.2M → Finish
7:06 | 6:58/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:16
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:38:43
Pace7:32 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4522:477:2022:47
7:20
-
10K
6.21 mi11:14:2145:237:1822:36
7:16
-0:04
15K
9.32 mi11:37:281:08:307:2123:07
7:26
+0:10
20K
12.43 mi12:00:181:31:207:2122:50
7:21
-0:05
Half
13.11 mi12:05:141:36:167:214:56
7:14
-0:07
25K
15.53 mi12:23:121:54:147:2117:58
7:25
+0:11
30K
18.64 mi12:46:462:17:487:2423:34
7:35
+0:10
20M
20.00 mi12:57:062:28:087:2410:20
7:36
+0:01
21M
21.00 mi13:05:032:36:057:267:57
7:57
+0:21
35K
21.75 mi13:10:362:41:387:265:33
7:25
-0:32
23M
23.00 mi13:20:042:51:067:269:28
7:34
+0:09
24M
24.00 mi13:27:402:58:427:277:36
7:36
+0:02
40K
24.85 mi13:34:053:05:077:276:25
7:30
-0:06
25.2M
25.20 mi13:36:513:07:537:272:46
8:01
+0:31
Finish
26.22 mi13:43:573:14:597:277:06
6:58
-1:03

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

6:58 /mi

Average Pace

7:27 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:04:16

95% of race

Time at Steady Pace

10:43

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:26 /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 mi10:51:4522:477:2022:47
7:20
#10684
10K
6.21 mi11:14:2145:237:1822:36
7:16
#10359
15K
9.32 mi11:37:281:08:307:2123:07
7:26
#10629
20K
12.43 mi12:00:181:31:207:2122:50
7:21
#10301
Half
13.11 mi12:05:141:36:167:214:56
7:14
#10240
25K
15.53 mi12:23:121:54:147:2117:58
7:25
#10029
30K
18.64 mi12:46:462:17:487:2423:34
7:35
#9634
20M
20.00 mi12:57:062:28:087:2410:20
7:36
#9436
21M
21.00 mi13:05:032:36:057:267:57
7:57
#9247
35K
21.75 mi13:10:362:41:387:265:33
7:25
#9172
23M
23.00 mi13:20:042:51:067:269:28
7:34
#8973
24M
24.00 mi13:27:402:58:427:277:36
7:36
#8916
40K
24.85 mi13:34:053:05:077:276:25
7:30
#8784
25.2M
25.20 mi13:36:513:07:537:272:46
8:01
#8708
Finish
26.22 mi13:43:573:14:597:277:06
6:58
#8547
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi106848526852611221(Top 40%)8699(Top 54%)8699(Top 436%)
10K6.21 mi3.10 mi10359+3258348+1788348+17810124(Top 36%)8213(Top 51%)8213(Top 411%)
15K9.32 mi3.11 mi10629-2708455-1078455-10711221(Top 40%)8699(Top 54%)8699(Top 436%)
20K12.43 mi3.11 mi10301+3288258+1978258+1979440(Top 33%)7704(Top 48%)7704(Top 386%)
Half13.11 mi0.68 mi10240+618226+328226+329288(Top 33%)7631(Top 47%)7631(Top 382%)
25K15.53 mi2.42 mi10029+2118080+1468080+1469227(Top 32%)7460(Top 46%)7460(Top 374%)
30K18.64 mi3.11 mi9634+3957811+2697811+2698339(Top 29%)6791(Top 42%)6791(Top 340%)
20M20.00 mi1.36 mi9436+1987667+1447667+1447707(Top 27%)6263(Top 39%)6263(Top 314%)
21M21.00 mi1.00 mi9247+1897536+1317536+1317081(Top 25%)5732(Top 36%)5732(Top 287%)
35K21.75 mi0.75 mi9172+757476+607476+608045(Top 28%)6330(Top 39%)6330(Top 317%)
23M23.00 mi1.25 mi8973+1997318+1587318+1586991(Top 25%)5586(Top 35%)5586(Top 280%)
24M24.00 mi1.00 mi8916+577252+667252+668395(Top 30%)6324(Top 39%)6324(Top 317%)
40K24.85 mi0.85 mi8784+1327134+1187134+1186830(Top 24%)5335(Top 33%)5335(Top 267%)
25.2M25.20 mi0.35 mi8708+767078+567078+566076(Top 21%)4802(Top 30%)4802(Top 241%)
Finish26.22 mi1.02 mi8547+1616962+1166962+1165522(Top 19%)4446(Top 28%)4446(Top 223%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

11221

Males

8699

M50-54

8699

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

10124

Males

8213

M50-54

8213

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

11221

Males

8699

M50-54

8699

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

9440

Males

7704

M50-54

7704

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

9288

Males

7631

M50-54

7631

Half→25K

13.1 - 15.5 mi

Top 32%
×4stories
+66ft-88ft

Overall

9227

Males

7460

M50-54

7460

25K→30K

15.5 - 18.6 mi

Top 29%
×9stories
+181ft-148ft

Overall

8339

Males

6791

M50-54

6791

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7707

Males

6263

M50-54

6263

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

7081

Males

5732

M50-54

5732

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

8045

Males

6330

M50-54

6330

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

6991

Males

5586

M50-54

5586

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

8395

Males

6324

M50-54

6324

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6830

Males

5335

M50-54

5335

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

6076

Males

4802

M50-54

4802

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

5522

Males

4446

M50-54

4446

Passing Analysis

Category:
Athletes Passed
2912*
Passed By
775
Net Change
+2137
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10684
5K → 10K437112+325#10684#10359
10K → 15K99369-270#10359#10629
15K → 20K36436+328#10629#10301
20K → Half698+61#10301#10240
Half → 25K256*45+211#10240#10029
25K → 30K450*55+395#10029#9634
30K → 20M21113+198#9634#9436
20M → 21M20213+189#9436#9247
21M → 35K9217+75#9247#9172
35K → 23M22021+199#9172#8973
23M → 24M10447+57#8973#8916
24M → 40K14917+132#8916#8784
40K → 25.2M837+76#8784#8708
25.2M → Finish17615+161#8708#8547
TOTALS2912*775+2137

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

📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing