Boston Marathon logo
BOSTON MARATHON 2025

Chandi Kodthiwada

Bib: 29157•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
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
9:15/mi
28:44
↑ 97↓ 3451.5%
10K· 6.21 mi
9:16/mi
57:32
↑ 79↓ 1380.4%
15K· 9.32 mi
9:39/mi
1:27:30
↑ 67↓ 78
20K· 12.43 mi
10:02/mi
1:58:39
↑ 106↓ 860.1%
Half· 13.11 mi
9:24/mi
2:05:04
↑ 19↓ 370.5%
25K· 15.53 mi
10:10/mi
2:29:42
↑ 66↓ 880.2%
30K· 18.64 mi
11:06/mi
3:04:12
↑ 181↓ 1480.2%
20M
10:40/mi
3:18:42
↑ 64↓ 500.2%
21M
12:46/mi
3:31:28
↑ 106↓ 241.6%
35K· 21.75 mi
10:55/mi
3:39:38
↑ 17↓ 861.7%
23M
11:58/mi
3:54:37
↑ 23↓ 630.6%
24M
11:35/mi
4:06:12
↓ 821.3%
40K· 24.85 mi
11:56/mi
4:16:24
↓ 200.3%
25.2M
11:59/mi
4:20:32
↑ 13↓ 160.2%
Finish· 26.22 mi
9:31/mi
4:30:14
↑ 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
Time2:05:04
Pace9:32 /mi
2nd Half
Distance13.11 mi
Time2:25:10
Pace11:04 /mi
📊Positive Split: 16.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:3428:449:1528:44
9:15
-
10K
6.21 mi12:15:2257:329:1628:48
9:16
+0:01
15K
9.32 mi12:45:201:27:309:2329:58
9:39
+0:23
20K
12.43 mi13:16:291:58:399:3331:09
10:02
+0:23
Half
13.11 mi13:22:542:05:049:326:25
9:24
-0:38
25K
15.53 mi13:47:322:29:429:3824:38
10:10
+0:46
30K
18.64 mi14:22:023:04:129:5334:30
11:06
+0:56
20M
20.00 mi14:36:323:18:429:5614:30
10:40
-0:26
21M
21.00 mi14:49:183:31:2810:0412:46
12:46
+2:06
35K
21.75 mi14:57:283:39:3810:068:10
10:55
-1:51
23M
23.00 mi15:12:273:54:3710:1214:59
11:58
+1:03
24M
24.00 mi15:24:024:06:1210:1611:35
11:35
-0:23
40K
24.85 mi15:34:144:16:2410:1910:12
11:56
+0:21
25.2M
25.20 mi15:38:224:20:3210:204:08
11:59
+0:03
Finish
26.22 mi15:48:044:30:1410:199:42
9:31
-2:28

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

9:15 /mi

Average Pace

10:19 /mi

Slowest Pace

12:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:46

50% of race

Time at Steady Pace

1:21:48

30% of race

Time at Slower Pace

53:40

20% of race

Average Pace: 10:18 /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 mi11:46:3428:449:1528:44
9:15
#23388
10K
6.21 mi12:15:2257:329:1628:48
9:16
#23417
15K
9.32 mi12:45:201:27:309:2329:58
9:39
#23716
20K
12.43 mi13:16:291:58:399:3331:09
10:02
#23869
Half
13.11 mi13:22:542:05:049:326:25
9:24
#23843
25K
15.53 mi13:47:322:29:429:3824:38
10:10
#23798
30K
18.64 mi14:22:023:04:129:5334:30
11:06
#23895
20M
20.00 mi14:36:323:18:429:5614:30
10:40
#23836
21M
21.00 mi14:49:183:31:2810:0412:46
12:46
#23906
35K
21.75 mi14:57:283:39:3810:068:10
10:55
#23915
23M
23.00 mi15:12:273:54:3710:1214:59
11:58
#24001
24M
24.00 mi15:24:024:06:1210:1611:35
11:35
#24061
40K
24.85 mi15:34:144:16:2410:1910:12
11:56
#24125
25.2M
25.20 mi15:38:224:20:3210:204:08
11:59
#24110
Finish
26.22 mi15:48:044:30:1410:199:42
9:31
#24039
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23388139451394524133(Top 85%)14324(Top 89%)14324(Top 254%)
10K6.21 mi3.10 mi23417-2913981-3613981-3623422(Top 82%)13992(Top 87%)13992(Top 248%)
15K9.32 mi3.11 mi23716-29914127-14614127-14624133(Top 85%)14324(Top 89%)14324(Top 254%)
20K12.43 mi3.11 mi23869-15314186-5914186-5924273(Top 85%)14346(Top 89%)14346(Top 254%)
Half13.11 mi0.68 mi23843+2614174+1214174+1223271(Top 82%)13916(Top 86%)13916(Top 247%)
25K15.53 mi2.42 mi23798+4514153+2114153+2123629(Top 83%)14021(Top 87%)14021(Top 249%)
30K18.64 mi3.11 mi23895-9714158-514158-524193(Top 85%)14161(Top 88%)14161(Top 251%)
20M20.00 mi1.36 mi23836+5914113+4514113+4522878(Top 81%)13469(Top 84%)13469(Top 239%)
21M21.00 mi1.00 mi23906-7014129-1614129-1624752(Top 87%)14250(Top 88%)14250(Top 253%)
35K21.75 mi0.75 mi23915-914121+814121+824026(Top 85%)13892(Top 86%)13892(Top 246%)
23M23.00 mi1.25 mi24001-8614142-2114142-2125071(Top 88%)14368(Top 89%)14368(Top 255%)
24M24.00 mi1.00 mi24061-6014153-1114153-1125032(Top 88%)14322(Top 89%)14322(Top 254%)
40K24.85 mi0.85 mi24125-6414167-1414167-1424805(Top 87%)14163(Top 88%)14163(Top 251%)
25.2M25.20 mi0.35 mi24110+1514154+1314154+1323196(Top 82%)13383(Top 83%)13383(Top 237%)
Finish26.22 mi1.02 mi24039+7114116+3814116+3821240(Top 75%)12408(Top 77%)12408(Top 220%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21story building
+97ft-345ft

Overall

24133

Males

14324

M18-39

14324

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

23422

Males

13992

M18-39

13992

10K→15K

6.2 - 9.3 mi

Top 85%
×3story building
+67ft-78ft

Overall

24133

Males

14324

M18-39

14324

15K→20K

9.3 - 12.4 mi

Top 85%
×5story building
+106ft-86ft

Overall

24273

Males

14346

M18-39

14346

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

23271

Males

13916

M18-39

13916

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

23629

Males

14021

M18-39

14021

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

24193

Males

14161

M18-39

14161

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

22878

Males

13469

M18-39

13469

20M→21M

20.0 - 21.0 mi

Top 87%
×8story building
+106ft-24ft

Overall

24752

Males

14250

M18-39

14250

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

24026

Males

13892

M18-39

13892

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

25071

Males

14368

M18-39

14368

23M→24M

23.0 - 24.0 mi

Top 88%
×6story building
+12ft-82ft

Overall

25032

Males

14322

M18-39

14322

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

24805

Males

14163

M18-39

14163

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23196

Males

13383

M18-39

13383

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

21240

Males

12408

M18-39

12408

Passing Analysis

Category:
Athletes Passed
1073
Passed By
1724
Net Change
-651
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23388
5K → 10K221250-29#23388#23417
10K → 15K91390-299#23417#23716
15K → 20K82235-153#23716#23869
20K → Half3711+26#23869#23843
Half → 25K13590+45#23843#23798
25K → 30K118215-97#23798#23895
30K → 20M10546+59#23895#23836
20M → 21M40110-70#23836#23906
21M → 35K4756-9#23906#23915
35K → 23M38124-86#23915#24001
23M → 24M2686-60#24001#24061
24M → 40K2892-64#24061#24125
40K → 25.2M2712+15#24125#24110
25.2M → Finish787+71#24110#24039
TOTALS10731724-651
📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing