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BOSTON MARATHON 2025

Brian Kielty

Bib: 13134 M GB

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 28%
Gender (Male)
#0 / 16105
Top 41%
Masters (Masters Men)
#0 / 10463
Top 28%
Division (M50-54)
#0 / 1996
Top 25%
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
7:17/mi
22:37
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:18/mi
45:17
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:17/mi
1:07:55
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:19/mi
1:30:39
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:18/mi
1:35:38
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:27/mi
1:53:41
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:34/mi
2:17:10
↑ 181↓ 1480.2%
138 ft elev
20M
7:39/mi
2:27:34
↑ 64↓ 500.2%
148 ft elev
21M
7:44/mi
2:35:18
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:13/mi
2:40:42
↑ 17↓ 861.7%
156 ft elev
23M
7:27/mi
2:50:02
↑ 23↓ 630.6%
116 ft elev
24M
7:18/mi
2:57:20
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:15/mi
3:03:32
↓ 200.3%
20 ft elev
25.2M
7:35/mi
3:06:09
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:45/mi
3:13:02
↑ 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 HalfFaster
Distance13.11 mi
Time1:35:38
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:37:24
Pace7:26 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:0922:377:1722:37
7:17
-
10K
6.21 mi11:14:4945:177:1722:40
7:18
+0:01
15K
9.32 mi11:37:271:07:557:1722:38
7:17
-0:01
20K
12.43 mi12:00:111:30:397:1822:44
7:19
+0:02
Half
13.11 mi12:05:101:35:387:184:59
7:18
-0:01
25K
15.53 mi12:23:131:53:417:1918:03
7:27
+0:09
30K
18.64 mi12:46:422:17:107:2123:29
7:34
+0:07
20M
20.00 mi12:57:062:27:347:2310:24
7:39
+0:05
21M
21.00 mi13:04:502:35:187:247:44
7:44
+0:05
35K
21.75 mi13:10:142:40:427:235:24
7:13
-0:31
23M
23.00 mi13:19:342:50:027:249:20
7:27
+0:14
24M
24.00 mi13:26:522:57:207:237:18
7:18
-0:09
40K
24.85 mi13:33:043:03:327:236:12
7:15
-0:03
25.2M
25.20 mi13:35:413:06:097:232:37
7:35
+0:20
Finish
26.22 mi13:42:343:13:027:226:53
6:45
-0:50

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

6:45 /mi

Average Pace

7:22 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:25

63% of race

Time at Steady Pace

1:11:37

37% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:22 /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 mi10:52:0922:377:1722:37
7:17
#10134
10K
6.21 mi11:14:4945:177:1722:40
7:18
#10228
15K
9.32 mi11:37:271:07:557:1722:38
7:17
#10092
20K
12.43 mi12:00:111:30:397:1822:44
7:19
#9817
Half
13.11 mi12:05:101:35:387:184:59
7:18
#9825
25K
15.53 mi12:23:131:53:417:1918:03
7:27
#9727
30K
18.64 mi12:46:422:17:107:2123:29
7:34
#9353
20M
20.00 mi12:57:062:27:347:2310:24
7:39
#9214
21M
21.00 mi13:04:502:35:187:247:44
7:44
#8943
35K
21.75 mi13:10:142:40:427:235:24
7:13
#8809
23M
23.00 mi13:19:342:50:027:249:20
7:27
#8564
24M
24.00 mi13:26:522:57:207:237:18
7:18
#8405
40K
24.85 mi13:33:043:03:327:236:12
7:15
#8233
25.2M
25.20 mi13:35:413:06:097:232:37
7:35
#8147
Finish
26.22 mi13:42:343:13:027:226:53
6:45
#7911
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi10134824182419859(Top 35%)8001(Top 50%)8001(Top 401%)
10K6.21 mi3.10 mi10228-948281-408281-4010293(Top 36%)8301(Top 52%)8301(Top 416%)
15K9.32 mi3.11 mi10092+1368185+968185+969859(Top 35%)8001(Top 50%)8001(Top 401%)
20K12.43 mi3.11 mi9817+2758010+1758010+1759166(Top 32%)7538(Top 47%)7538(Top 378%)
Half13.11 mi0.68 mi9825-8801080109944(Top 35%)7966(Top 49%)7966(Top 399%)
25K15.53 mi2.42 mi9727+987922+887922+889483(Top 33%)7584(Top 47%)7584(Top 380%)
30K18.64 mi3.11 mi9353+3747668+2547668+2548136(Top 29%)6662(Top 41%)6662(Top 334%)
20M20.00 mi1.36 mi9214+1397559+1097559+1098033(Top 28%)6460(Top 40%)6460(Top 324%)
21M21.00 mi1.00 mi8943+2717369+1907369+1905844(Top 21%)4963(Top 31%)4963(Top 249%)
35K21.75 mi0.75 mi8809+1347270+997270+996718(Top 24%)5537(Top 34%)5537(Top 277%)
23M23.00 mi1.25 mi8564+2457085+1857085+1856376(Top 22%)5207(Top 32%)5207(Top 261%)
24M24.00 mi1.00 mi8405+1596953+1326953+1326417(Top 23%)5172(Top 32%)5172(Top 259%)
40K24.85 mi0.85 mi8233+1726821+1326821+1325383(Top 19%)4484(Top 28%)4484(Top 225%)
25.2M25.20 mi0.35 mi8147+866757+646757+643867(Top 14%)3349(Top 21%)3349(Top 168%)
Finish26.22 mi1.02 mi7911+2366572+1856572+1854249(Top 15%)3626(Top 23%)3626(Top 182%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

9859

Males

8001

M50-54

8001

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

10293

Males

8301

M50-54

8301

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

9859

Males

8001

M50-54

8001

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

9166

Males

7538

M50-54

7538

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9944

Males

7966

M50-54

7966

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

9483

Males

7584

M50-54

7584

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

8136

Males

6662

M50-54

6662

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

8033

Males

6460

M50-54

6460

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

5844

Males

4963

M50-54

4963

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6718

Males

5537

M50-54

5537

35K→23M

21.8 - 23.0 mi

Top 22%
×5story building
+23ft-63ft

Overall

6376

Males

5207

M50-54

5207

23M→24M

23.0 - 24.0 mi

Top 23%
×6story building
+12ft-82ft

Overall

6417

Males

5172

M50-54

5172

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5383

Males

4484

M50-54

4484

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3867

Males

3349

M50-54

3349

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4249

Males

3626

M50-54

3626

Passing Analysis

Category:
Athletes Passed
2935*
Passed By
711
Net Change
+2223
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10134
5K → 10K195288-94#10134#10228
10K → 15K236100+136#10228#10092
15K → 20K331*56+275#10092#9817
20K → Half3644-8#9817#9825
Half → 25K19395+98#9825#9727
25K → 30K42248+374#9727#9353
30K → 20M17233+139#9353#9214
20M → 21M2754+271#9214#8943
21M → 35K1395+134#8943#8809
35K → 23M25712+245#8809#8564
23M → 24M18122+159#8564#8405
24M → 40K1731+172#8405#8233
40K → 25.2M860+86#8233#8147
25.2M → Finish2393+236#8147#7911
TOTALS2935*711+2223

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

📊

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