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BOSTON MARATHON 2025

Mattheu Kelsch

MA

Bib: 10821 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:05/mi
28:12
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:31/mi
54:39
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:20/mi
1:20:31
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:00/mi
1:45:23
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:56/mi
1:50:07
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:31/mi
2:08:21
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:04/mi
2:33:24
↑ 181↓ 1480.2%
138 ft elev
20M
8:28/mi
2:44:55
↑ 64↓ 500.2%
148 ft elev
21M
8:44/mi
2:53:39
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:28/mi
3:00:44
↑ 17↓ 861.7%
156 ft elev
23M
9:02/mi
3:12:02
↑ 23↓ 630.6%
116 ft elev
24M
9:14/mi
3:21:16
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:53/mi
3:28:52
↓ 200.3%
20 ft elev
25.2M
9:11/mi
3:32:02
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:20/mi
3:39:30
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:50:07
Pace8:24 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:49:23
Pace8:21 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:5228:129:0528:12
9:05
-
10K
6.21 mi12:15:1954:398:4826:27
8:31
-0:34
15K
9.32 mi12:41:111:20:318:3825:52
8:20
-0:11
20K
12.43 mi13:06:031:45:238:2924:52
8:00
-0:20
Half
13.11 mi13:10:471:50:078:244:44
6:56
-1:04
25K
15.53 mi13:29:012:08:218:1618:14
7:31
+0:35
30K
18.64 mi13:54:042:33:248:1425:03
8:04
+0:33
20M
20.00 mi14:05:352:44:558:1511:31
8:28
+0:24
21M
21.00 mi14:14:192:53:398:168:44
8:44
+0:16
35K
21.75 mi14:21:243:00:448:197:05
9:28
+0:44
23M
23.00 mi14:32:423:12:028:2111:18
9:02
-0:26
24M
24.00 mi14:41:563:21:168:239:14
9:14
+0:12
40K
24.85 mi14:49:323:28:528:247:36
8:53
-0:21
25.2M
25.20 mi14:52:423:32:028:253:10
9:11
+0:18
Finish
26.22 mi15:00:103:39:308:237:28
7:20
-1:51

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

6:56 /mi

Average Pace

8:23 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:21

37% of race

Time at Steady Pace

1:12:34

33% of race

Time at Slower Pace

1:06:35

30% of race

Average Pace: 8:22 /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 mi11:48:5228:129:0528:12
9:05
#22745
10K
6.21 mi12:15:1954:398:4826:27
8:31
#21419
15K
9.32 mi12:41:111:20:318:3825:52
8:20
#20410
20K
12.43 mi13:06:031:45:238:2924:52
8:00
#19141
Half
13.11 mi13:10:471:50:078:244:44
6:56
#18634
25K
15.53 mi13:29:012:08:218:1618:14
7:31
#17362
30K
18.64 mi13:54:042:33:248:1425:03
8:04
#16397
20M
20.00 mi14:05:352:44:558:1511:31
8:28
#16172
21M
21.00 mi14:14:192:53:398:168:44
8:44
#15870
35K
21.75 mi14:21:243:00:448:197:05
9:28
#16049
23M
23.00 mi14:32:423:12:028:2111:18
9:02
#16006
24M
24.00 mi14:41:563:21:168:239:14
9:14
#16112
40K
24.85 mi14:49:323:28:528:247:36
8:53
#16095
25.2M
25.20 mi14:52:423:32:028:253:10
9:11
#16034
Finish
26.22 mi15:00:103:39:308:237:28
7:20
#15743
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi227451364113641182051171011710
10K6.21 mi3.10 mi21419+132613075+56613075+566198651241212412
15K9.32 mi3.11 mi20410+100912645+43012645+430182051171011710
20K12.43 mi3.11 mi19141+126912099+54612099+546149551029210292
Half13.11 mi0.68 mi18634+50711883+21611883+216718063576357
25K15.53 mi2.42 mi17362+127211335+54811335+5481014179667966
30K18.64 mi3.11 mi16397+96510879+45610879+4561183385938593
20M20.00 mi1.36 mi16172+22510756+12310756+1231361992829282
21M21.00 mi1.00 mi15870+30210592+16410592+1641188283308330
35K21.75 mi0.75 mi16049-17910654-6210654-62201921205512055
23M23.00 mi1.25 mi16006+4310593+6110593+61163981024010240
24M24.00 mi1.00 mi16112-10610625-3210625-32184791114311143
40K24.85 mi0.85 mi16095+1710593+3210593+321566797469746
25.2M25.20 mi0.35 mi16034+6110556+3710556+371280783928392
Finish26.22 mi1.02 mi15743+29110405+15110405+151796558995899

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18205

Males

11710

M45-49

11710

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19865

Males

12412

M45-49

12412

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18205

Males

11710

M45-49

11710

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

14955

Males

10292

M45-49

10292

20K→Half

12.4 - 13.1 mi

Top 25%
×2story building
+19ft-37ft

Overall

7180

Males

6357

M45-49

6357

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

10141

Males

7966

M45-49

7966

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

11833

Males

8593

M45-49

8593

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

13619

Males

9282

M45-49

9282

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11882

Males

8330

M45-49

8330

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

20192

Males

12055

M45-49

12055

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

16398

Males

10240

M45-49

10240

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

18479

Males

11143

M45-49

11143

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15667

Males

9746

M45-49

9746

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12807

Males

8392

M45-49

8392

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7965

Males

5899

M45-49

5899

Passing Analysis

Category:
Athletes Passed
7531
Passed By
529
Net Change
+7002
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22745
5K → 10K133711+1326#22745#21419
10K → 15K10156+1009#21419#20410
15K → 20K12701+1269#20410#19141
20K → Half5070+507#19141#18634
Half → 25K12720+1272#18634#17362
25K → 30K9661+965#17362#16397
30K → 20M2338+225#16397#16172
20M → 21M3053+302#16172#15870
21M → 35K32211-179#15870#16049
35K → 23M12986+43#16049#16006
23M → 24M36142-106#16006#16112
24M → 40K6851+17#16112#16095
40K → 25.2M687+61#16095#16034
25.2M → Finish2932+291#16034#15743
TOTALS7531529+7002

Passing Charts

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