Boston Marathon logo
BOSTON MARATHON 2025

Ho Sung Kim

Bib: 14340•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 42%
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
8:17/mi
25:44
↑ 97↓ 3451.5%
10K· 6.21 mi
8:21/mi
51:39
↑ 79↓ 1380.4%
15K· 9.32 mi
8:25/mi
1:17:47
↑ 67↓ 78
20K· 12.43 mi
8:47/mi
1:45:03
↑ 106↓ 860.1%
Half· 13.11 mi
8:55/mi
1:51:08
↑ 19↓ 370.5%
25K· 15.53 mi
8:50/mi
2:12:34
↑ 66↓ 880.2%
30K· 18.64 mi
9:00/mi
2:40:33
↑ 181↓ 1480.2%
20M
9:33/mi
2:53:31
↑ 64↓ 500.2%
21M
9:36/mi
3:03:07
↑ 106↓ 241.6%
35K· 21.75 mi
8:41/mi
3:09:37
↑ 17↓ 861.7%
23M
8:48/mi
3:20:38
↑ 23↓ 630.6%
24M
8:16/mi
3:28:54
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:36:00
↓ 200.3%
25.2M
8:51/mi
3:39:03
↑ 13↓ 160.2%
Finish· 26.22 mi
7:49/mi
3:47:01
↑ 22↓ 21

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
Time1:51:08
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time1:55:53
Pace8:50 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:3025:448:1725:44
8:17
-
10K
6.21 mi11:21:2551:398:1925:55
8:21
+0:04
15K
9.32 mi11:47:331:17:478:2126:08
8:25
+0:04
20K
12.43 mi12:14:491:45:038:2727:16
8:47
+0:22
Half
13.11 mi12:20:541:51:088:296:05
8:55
+0:08
25K
15.53 mi12:42:202:12:348:3221:26
8:50
-0:05
30K
18.64 mi13:10:192:40:338:3727:59
9:00
+0:10
20M
20.00 mi13:23:172:53:318:4112:58
9:33
+0:33
21M
21.00 mi13:32:533:03:078:439:36
9:36
+0:03
35K
21.75 mi13:39:233:09:378:436:30
8:41
-0:55
23M
23.00 mi13:50:243:20:388:4311:01
8:48
+0:07
24M
24.00 mi13:58:403:28:548:428:16
8:16
-0:32
40K
24.85 mi14:05:463:36:008:417:06
8:18
+0:02
25.2M
25.20 mi14:08:493:39:038:423:03
8:51
+0:33
Finish
26.22 mi14:16:473:47:018:407:58
7:49
-1:02

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

7:49 /mi

Average Pace

8:40 /mi

Slowest Pace

9:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:07

45% of race

Time at Steady Pace

1:43:20

46% of race

Time at Slower Pace

22:34

10% of race

Average Pace: 8:39 /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 mi10:55:3025:448:1725:44
8:17
#18596
10K
6.21 mi11:21:2551:398:1925:55
8:21
#18688
15K
9.32 mi11:47:331:17:478:2126:08
8:25
#18682
20K
12.43 mi12:14:491:45:038:2727:16
8:47
#18969
Half
13.11 mi12:20:541:51:088:296:05
8:55
#19108
25K
15.53 mi12:42:202:12:348:3221:26
8:50
#19121
30K
18.64 mi13:10:192:40:338:3727:59
9:00
#18824
20M
20.00 mi13:23:172:53:318:4112:58
9:33
#18882
21M
21.00 mi13:32:533:03:078:439:36
9:36
#18728
35K
21.75 mi13:39:233:09:378:436:30
8:41
#18655
23M
23.00 mi13:50:243:20:388:4311:01
8:48
#18412
24M
24.00 mi13:58:403:28:548:428:16
8:16
#18176
40K
24.85 mi14:05:463:36:008:417:06
8:18
#17952
25.2M
25.20 mi14:08:493:39:038:423:03
8:51
#17840
Finish
26.22 mi14:16:473:47:018:407:58
7:49
#17606
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi18596118621186218769(Top 66%)11949(Top 74%)11949(Top 949%)
10K6.21 mi3.10 mi18688-9211903-4111903-4118810(Top 66%)11986(Top 74%)11986(Top 952%)
15K9.32 mi3.11 mi18682+611906-311906-318769(Top 66%)11949(Top 74%)11949(Top 949%)
20K12.43 mi3.11 mi18969-28712028-12212028-12219811(Top 70%)12375(Top 77%)12375(Top 983%)
Half13.11 mi0.68 mi19108-13912082-5412082-5421429(Top 75%)13085(Top 81%)13085(Top 1039%)
25K15.53 mi2.42 mi19121-1312083-112083-119129(Top 67%)12027(Top 75%)12027(Top 955%)
30K18.64 mi3.11 mi18824+29711927+15611927+15617724(Top 62%)11248(Top 70%)11248(Top 893%)
20M20.00 mi1.36 mi18882-5811922+511922+519340(Top 68%)11843(Top 74%)11843(Top 941%)
21M21.00 mi1.00 mi18728+15411822+10011822+10016534(Top 58%)10493(Top 65%)10493(Top 833%)
35K21.75 mi0.75 mi18655+7311776+4611776+4616592(Top 58%)10440(Top 65%)10440(Top 829%)
23M23.00 mi1.25 mi18412+24311648+12811648+12815099(Top 53%)9674(Top 60%)9674(Top 768%)
24M24.00 mi1.00 mi18176+23611511+13711511+13713023(Top 46%)8670(Top 54%)8670(Top 689%)
40K24.85 mi0.85 mi17952+22411381+13011381+13012169(Top 43%)8146(Top 51%)8146(Top 647%)
25.2M25.20 mi0.35 mi17840+11211323+5811323+5810918(Top 38%)7471(Top 46%)7471(Top 593%)
Finish26.22 mi1.02 mi17606+23411194+12911194+12911565(Top 41%)7810(Top 48%)7810(Top 620%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

18769

Males

11949

M60-64

11949

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

18810

Males

11986

M60-64

11986

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

18769

Males

11949

M60-64

11949

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

19811

Males

12375

M60-64

12375

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

21429

Males

13085

M60-64

13085

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

19129

Males

12027

M60-64

12027

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

17724

Males

11248

M60-64

11248

30K→20M

18.6 - 20.0 mi

Top 68%
×5story building
+64ft-50ft

Overall

19340

Males

11843

M60-64

11843

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

16534

Males

10493

M60-64

10493

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

16592

Males

10440

M60-64

10440

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

15099

Males

9674

M60-64

9674

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

13023

Males

8670

M60-64

8670

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12169

Males

8146

M60-64

8146

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10918

Males

7471

M60-64

7471

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

11565

Males

7810

M60-64

7810

Passing Analysis

Category:
Athletes Passed
2515
Passed By
1525
Net Change
+990
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18596
5K → 10K223315-92#18596#18688
10K → 15K192186+6#18688#18682
15K → 20K122409-287#18682#18969
20K → Half5144-139#18969#19108
Half → 25K168181-13#19108#19121
25K → 30K38184+297#19121#18824
30K → 20M87145-58#18824#18882
20M → 21M18228+154#18882#18728
21M → 35K8916+73#18728#18655
35K → 23M2518+243#18655#18412
23M → 24M2393+236#18412#18176
24M → 40K2240+224#18176#17952
40K → 25.2M1120+112#17952#17840
25.2M → Finish2406+234#17840#17606
TOTALS25151525+990
📊

Passing Visuals

Category:
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