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BOSTON MARATHON 2025

Kyle Heffrin

Bib: 27541•M

MA

0:00
0:00
/ mi
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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
7:38/mi
23:43
↑ 97↓ 3451.5%
10K· 6.21 mi
7:30/mi
47:02
↑ 79↓ 1380.4%
15K· 9.32 mi
7:44/mi
1:11:05
↑ 67↓ 78
20K· 12.43 mi
7:59/mi
1:35:52
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:41:21
↑ 19↓ 370.5%
25K· 15.53 mi
8:24/mi
2:01:42
↑ 66↓ 880.2%
30K· 18.64 mi
8:55/mi
2:29:23
↑ 181↓ 1480.2%
20M
9:14/mi
2:41:56
↑ 64↓ 500.2%
21M
9:11/mi
2:51:07
↑ 106↓ 241.6%
35K· 21.75 mi
8:32/mi
2:57:30
↑ 17↓ 861.7%
23M
8:54/mi
3:08:39
↑ 23↓ 630.6%
24M
8:57/mi
3:17:36
↓ 821.3%
40K· 24.85 mi
9:03/mi
3:25:20
↓ 200.3%
25.2M
9:43/mi
3:28:41
↑ 13↓ 160.2%
Finish· 26.22 mi
8:20/mi
3:37:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:21
Pace7:44 /mi
2nd Half
Distance13.11 mi
Time1:55:50
Pace8:50 /mi
📊Positive Split: 14.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:39:3523:437:3823:43
7:38
-
10K
6.21 mi12:02:5447:027:3423:19
7:30
-0:08
15K
9.32 mi12:26:571:11:057:3824:03
7:44
+0:14
20K
12.43 mi12:51:441:35:527:4324:47
7:59
+0:15
Half
13.11 mi12:57:131:41:217:445:29
8:02
+0:03
25K
15.53 mi13:17:342:01:427:5020:21
8:24
+0:22
30K
18.64 mi13:45:152:29:238:0127:41
8:55
+0:31
20M
20.00 mi13:57:482:41:568:0612:33
9:14
+0:19
21M
21.00 mi14:06:592:51:078:099:11
9:11
-0:03
35K
21.75 mi14:13:222:57:308:106:23
8:32
-0:39
23M
23.00 mi14:24:313:08:398:1211:09
8:54
+0:22
24M
24.00 mi14:33:283:17:368:148:57
8:57
+0:03
40K
24.85 mi14:41:123:25:208:167:44
9:03
+0:06
25.2M
25.20 mi14:44:333:28:418:173:21
9:43
+0:40
Finish
26.22 mi14:53:033:37:118:178:30
8:20
-1:23

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

7:30 /mi

Average Pace

8:17 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:21

47% of race

Time at Steady Pace

35:14

16% of race

Time at Slower Pace

1:20:36

37% of race

Average Pace: 8:17 /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 mi11:39:3523:437:3823:43
7:38
#13375
10K
6.21 mi12:02:5447:027:3423:19
7:30
#12741
15K
9.32 mi12:26:571:11:057:3824:03
7:44
#13103
20K
12.43 mi12:51:441:35:527:4324:47
7:59
#13487
Half
13.11 mi12:57:131:41:217:445:29
8:02
#13629
25K
15.53 mi13:17:342:01:427:5020:21
8:24
#14169
30K
18.64 mi13:45:152:29:238:0127:41
8:55
#14844
20M
20.00 mi13:57:482:41:568:0612:33
9:14
#15111
21M
21.00 mi14:06:592:51:078:099:11
9:11
#15013
35K
21.75 mi14:13:222:57:308:106:23
8:32
#15030
23M
23.00 mi14:24:313:08:398:1211:09
8:54
#15038
24M
24.00 mi14:33:283:17:368:148:57
8:57
#15130
40K
24.85 mi14:41:123:25:208:167:44
9:03
#15176
25.2M
25.20 mi14:44:333:28:418:173:21
9:43
#15187
Finish
26.22 mi14:53:033:37:118:178:30
8:20
#15187
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi133759808980813857(Top 49%)9888(Top 61%)9888(Top 175%)
10K6.21 mi3.10 mi12741+6349506+3029506+30212138(Top 43%)9219(Top 57%)9219(Top 163%)
15K9.32 mi3.11 mi13103-3629615-1099615-10913857(Top 49%)9888(Top 61%)9888(Top 175%)
20K12.43 mi3.11 mi13487-3849728-1139728-11314744(Top 52%)10201(Top 63%)10201(Top 181%)
Half13.11 mi0.68 mi13629-1429788-609788-6016137(Top 57%)10810(Top 67%)10810(Top 192%)
25K15.53 mi2.42 mi14169-5409989-2019989-20116511(Top 58%)10874(Top 68%)10874(Top 193%)
30K18.64 mi3.11 mi14844-67510210-22110210-22117203(Top 61%)11019(Top 68%)11019(Top 195%)
20M20.00 mi1.36 mi15111-26710302-9210302-9217936(Top 63%)11208(Top 70%)11208(Top 199%)
21M21.00 mi1.00 mi15013+9810240+6210240+6214517(Top 51%)9577(Top 59%)9577(Top 170%)
35K21.75 mi0.75 mi15030-1710231+910231+915639(Top 55%)10007(Top 62%)10007(Top 177%)
23M23.00 mi1.25 mi15038-810209+2210209+2215688(Top 55%)9932(Top 62%)9932(Top 176%)
24M24.00 mi1.00 mi15130-9210207+210207+217083(Top 60%)10491(Top 65%)10491(Top 186%)
40K24.85 mi0.85 mi15176-4610190+1710190+1716544(Top 58%)10165(Top 63%)10165(Top 180%)
25.2M25.20 mi0.35 mi15187-1110187+310187+315630(Top 55%)9696(Top 60%)9696(Top 172%)
Finish26.22 mi1.02 mi1518710162+2510162+2515175(Top 53%)9559(Top 59%)9559(Top 169%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13857

Males

9888

M18-39

9888

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

12138

Males

9219

M18-39

9219

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13857

Males

9888

M18-39

9888

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

14744

Males

10201

M18-39

10201

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

16137

Males

10810

M18-39

10810

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16511

Males

10874

M18-39

10874

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

17203

Males

11019

M18-39

11019

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

17936

Males

11208

M18-39

11208

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

14517

Males

9577

M18-39

9577

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

15639

Males

10007

M18-39

10007

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

15688

Males

9932

M18-39

9932

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

17083

Males

10491

M18-39

10491

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16544

Males

10165

M18-39

10165

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15630

Males

9696

M18-39

9696

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

15175

Males

9559

M18-39

9559

Passing Analysis

Category:
Athletes Passed
1676
Passed By
3488
Net Change
-1812
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13375
5K → 10K71076+634#13375#12741
10K → 15K95457-362#12741#13103
15K → 20K106490-384#13103#13487
20K → Half4146-142#13487#13629
Half → 25K68608-540#13629#14169
25K → 30K100775-675#14169#14844
30K → 20M64331-267#14844#15111
20M → 21M15860+98#15111#15013
21M → 35K5067-17#15013#15030
35K → 23M107115-8#15030#15038
23M → 24M61153-92#15038#15130
24M → 40K4995-46#15130#15176
40K → 25.2M3243-11#15176#15187
25.2M → Finish72720#15187#15187
TOTALS16763488-1812
📊

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