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BOSTON MARATHON 2025

Kai Yuen Chris Chim

Bib: 23011•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
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
7:46/mi
24:08
↑ 97↓ 3451.5%
10K· 6.21 mi
8:01/mi
49:02
↑ 79↓ 1380.4%
15K· 9.32 mi
8:10/mi
1:14:23
↑ 67↓ 78
20K· 12.43 mi
8:36/mi
1:41:05
↑ 106↓ 860.1%
Half· 13.11 mi
8:27/mi
1:46:51
↑ 19↓ 370.5%
25K· 15.53 mi
9:16/mi
2:09:18
↑ 66↓ 880.2%
30K· 18.64 mi
9:31/mi
2:38:51
↑ 181↓ 1480.2%
20M
9:40/mi
2:51:59
↑ 64↓ 500.2%
21M
10:27/mi
3:02:26
↑ 106↓ 241.6%
35K· 21.75 mi
9:05/mi
3:09:14
↑ 17↓ 861.7%
23M
9:36/mi
3:21:15
↑ 23↓ 630.6%
24M
9:12/mi
3:30:27
↓ 821.3%
40K· 24.85 mi
9:40/mi
3:38:43
↓ 200.3%
25.2M
10:29/mi
3:42:20
↑ 13↓ 160.2%
Finish· 26.22 mi
9:20/mi
3:51:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:51
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time2:05:00
Pace9:32 /mi
📊Positive Split: 17.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3224:087:4624:08
7:46
-
10K
6.21 mi11:45:2649:027:5324:54
8:01
+0:15
15K
9.32 mi12:10:471:14:237:5925:21
8:10
+0:09
20K
12.43 mi12:37:291:41:058:0826:42
8:36
+0:26
Half
13.11 mi12:43:151:46:518:095:46
8:27
-0:09
25K
15.53 mi13:05:422:09:188:1922:27
9:16
+0:49
30K
18.64 mi13:35:152:38:518:3129:33
9:31
+0:15
20M
20.00 mi13:48:232:51:598:3613:08
9:40
+0:09
21M
21.00 mi13:58:503:02:268:4110:27
10:27
+0:47
35K
21.75 mi14:05:383:09:148:426:48
9:05
-1:22
23M
23.00 mi14:17:393:21:158:4512:01
9:36
+0:31
24M
24.00 mi14:26:513:30:278:469:12
9:12
-0:24
40K
24.85 mi14:35:073:38:438:488:16
9:40
+0:28
25.2M
25.20 mi14:38:443:42:208:493:37
10:29
+0:49
Finish
26.22 mi14:48:153:51:518:519:31
9:20
-1:09

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

7:46 /mi

Average Pace

8:51 /mi

Slowest Pace

10:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:51

46% of race

Time at Steady Pace

1:29:32

39% of race

Time at Slower Pace

35:28

15% of race

Average Pace: 8:51 /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 mi11:20:3224:087:4624:08
7:46
#14510
10K
6.21 mi11:45:2649:027:5324:54
8:01
#15592
15K
9.32 mi12:10:471:14:237:5925:21
8:10
#16173
20K
12.43 mi12:37:291:41:058:0826:42
8:36
#16929
Half
13.11 mi12:43:151:46:518:095:46
8:27
#17020
25K
15.53 mi13:05:422:09:188:1922:27
9:16
#17737
30K
18.64 mi13:35:152:38:518:3129:33
9:31
#18271
20M
20.00 mi13:48:232:51:598:3613:08
9:40
#18422
21M
21.00 mi13:58:503:02:268:4110:27
10:27
#18538
35K
21.75 mi14:05:383:09:148:426:48
9:05
#18556
23M
23.00 mi14:17:393:21:158:4512:01
9:36
#18581
24M
24.00 mi14:26:513:30:278:469:12
9:12
#18573
40K
24.85 mi14:35:073:38:438:488:16
9:40
#18615
25.2M
25.20 mi14:38:443:42:208:493:37
10:29
#18619
Finish
26.22 mi14:48:153:51:518:519:31
9:20
#18712
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi14510102481024817136(Top 60%)11276(Top 70%)11276(Top 896%)
10K6.21 mi3.10 mi15592-108210656-40810656-40816585(Top 58%)11067(Top 69%)11067(Top 879%)
15K9.32 mi3.11 mi16173-58110885-22910885-22917136(Top 60%)11276(Top 70%)11276(Top 896%)
20K12.43 mi3.11 mi16929-75611181-29611181-29618802(Top 66%)11950(Top 74%)11950(Top 949%)
Half13.11 mi0.68 mi17020-9111210-2911210-2918864(Top 66%)11989(Top 74%)11989(Top 952%)
25K15.53 mi2.42 mi17737-71711486-27611486-27620995(Top 74%)12838(Top 80%)12838(Top 1020%)
30K18.64 mi3.11 mi18271-53411676-19011676-19019973(Top 70%)12270(Top 76%)12270(Top 975%)
20M20.00 mi1.36 mi18422-15111717-4111717-4119812(Top 70%)12078(Top 75%)12078(Top 959%)
21M21.00 mi1.00 mi18538-11611742-2511742-2519834(Top 70%)11967(Top 74%)11967(Top 951%)
35K21.75 mi0.75 mi18556-1811733+911733+918641(Top 66%)11319(Top 70%)11319(Top 899%)
23M23.00 mi1.25 mi18581-2511719+1411719+1419063(Top 67%)11469(Top 71%)11469(Top 911%)
24M24.00 mi1.00 mi18573+811683+3611683+3618341(Top 65%)11080(Top 69%)11080(Top 880%)
40K24.85 mi0.85 mi18615-4211675+811675+819335(Top 68%)11482(Top 71%)11482(Top 912%)
25.2M25.20 mi0.35 mi18619-411665+1011665+1018926(Top 67%)11281(Top 70%)11281(Top 896%)
Finish26.22 mi1.02 mi18712-9311692-2711692-2720522(Top 72%)12063(Top 75%)12063(Top 958%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

17136

Males

11276

M60-64

11276

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16585

Males

11067

M60-64

11067

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

17136

Males

11276

M60-64

11276

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

18802

Males

11950

M60-64

11950

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18864

Males

11989

M60-64

11989

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

20995

Males

12838

M60-64

12838

25K→30K

15.5 - 18.6 mi

Top 70%
×9story building
+181ft-148ft

Overall

19973

Males

12270

M60-64

12270

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

19812

Males

12078

M60-64

12078

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

19834

Males

11967

M60-64

11967

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

18641

Males

11319

M60-64

11319

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

19063

Males

11469

M60-64

11469

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

18341

Males

11080

M60-64

11080

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19335

Males

11482

M60-64

11482

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

18926

Males

11281

M60-64

11281

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2story building
+22ft-21ft

Overall

20522

Males

12063

M60-64

12063

Passing Analysis

Category:
Athletes Passed
830
Passed By
5032
Net Change
-4202
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14510
5K → 10K551137-1082#14510#15592
10K → 15K72653-581#15592#16173
15K → 20K49805-756#16173#16929
20K → Half15106-91#16929#17020
Half → 25K46763-717#17020#17737
25K → 30K93627-534#17737#18271
30K → 20M74225-151#18271#18422
20M → 21M71187-116#18422#18538
21M → 35K5068-18#18538#18556
35K → 23M100125-25#18556#18581
23M → 24M8072+8#18581#18573
24M → 40K64106-42#18573#18615
40K → 25.2M2832-4#18615#18619
25.2M → Finish33126-93#18619#18712
TOTALS8305032-4202
📊

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