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BOSTON MARATHON 2026

Gregory Stolfer

Bib: 6177 •M •Age: N/A

OH

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0:00
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Overall
#0 / 29021
Top 16%
Gender (Male)
#0 / 16340
Top 26%
Age Group (M18-39)
#0 / 5723
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
20:57
3.11 mi
Rank: #6297
Start → 5K
20:57 | 6:45/mi
10K
41:46
6.21 mi
Rank: #6111 (+186)
5K → 10K
20:49 | 6:43/mi
15K
1:02:37
9.32 mi
Rank: #6001 (+110)
10K → 15K
20:51 | 6:43/mi
20K
1:23:28
12.43 mi
Rank: #5770 (+231)
15K → 20K
20:51 | 6:43/mi
HALF
1:28:02
13.11 mi
Rank: #5783 (-13)
20K → HALF
4:34 | 6:42/mi
25K
1:44:14
15.53 mi
Rank: #5589 (+194)
HALF → 25K
16:12 | 6:41/mi
30K
2:05:12
18.64 mi
Rank: #5227 (+362)
25K → 30K
20:58 | 6:45/mi
20M
2:14:15
20.00 mi
Rank: #5031 (+196)
30K → 20M
9:03 | 6:40/mi
21M
2:21:12
21.00 mi
Rank: #4894 (+137)
20M → 21M
6:57 | 6:57/mi
35K
2:26:12
21.75 mi
Rank: #4863 (+31)
21M → 35K
5:00 | 6:41/mi
23M
2:34:45
23.00 mi
Rank: #4800 (+63)
35K → 23M
8:33 | 6:50/mi
24M
2:41:23
24.00 mi
Rank: #4720 (+80)
23M → 24M
6:38 | 6:38/mi
40K
2:47:11
24.85 mi
Rank: #4664 (+56)
24M → 40K
5:48 | 6:48/mi
25.2M
2:49:40
25.20 mi
Rank: #4639 (+25)
40K → 25.2M
2:29 | 7:13/mi
FINISH
2:56:16
26.22 mi
Rank: #4548 (+91)
25.2M → FINISH
6:36 | 6:29/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half⚖️ Balanced
via HALF
Distance13.11 mi
Time1:28:02
Pace6:43 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:28:14
Pace6:44 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:4820:576:4520:57
6:45
-
10K
6.21 mi10:49:3741:466:4420:49
6:43
-0:02
15K
9.32 mi11:10:281:02:376:4420:51
6:43
0:00
20K
12.43 mi11:31:191:23:286:4320:51
6:43
0:00
HALF
13.11 mi11:35:531:28:026:434:34
6:42
-0:01
25K
15.53 mi11:52:051:44:146:4316:12
6:41
-0:01
30K
18.64 mi12:13:032:05:126:4320:58
6:45
+0:04
20M
20.00 mi12:22:062:14:156:439:03
6:40
-0:05
21M
21.00 mi12:29:032:21:126:446:57
6:57
+0:17
35K
21.75 mi12:34:032:26:126:445:00
6:41
-0:16
23M
23.00 mi12:42:362:34:456:448:33
6:50
+0:09
24M
24.00 mi12:49:142:41:236:446:38
6:38
-0:12
40K
24.85 mi12:55:022:47:116:445:48
6:48
+0:10
25.2M
25.20 mi12:57:312:49:406:442:29
7:13
+0:25
FINISH
26.22 mi13:04:072:56:166:446:36
6:29
-0:44

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

6:29 /mi

Average Pace

6:44 /mi

Slowest Pace

7:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:53:47

99% of race

Time at Steady Pace

2:29

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:43 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:28:4820:576:4520:57
6:45
#6297
10K
6.21 mi10:49:3741:466:4420:49
6:43
#6111
15K
9.32 mi11:10:281:02:376:4420:51
6:43
#6001
20K
12.43 mi11:31:191:23:286:4320:51
6:43
#5770
HALF
13.11 mi11:35:531:28:026:434:34
6:42
#5783
25K
15.53 mi11:52:051:44:146:4316:12
6:41
#5589
30K
18.64 mi12:13:032:05:126:4320:58
6:45
#5227
20M
20.00 mi12:22:062:14:156:439:03
6:40
#5031
21M
21.00 mi12:29:032:21:126:446:57
6:57
#4894
35K
21.75 mi12:34:032:26:126:445:00
6:41
#4863
23M
23.00 mi12:42:362:34:456:448:33
6:50
#4800
24M
24.00 mi12:49:142:41:236:446:38
6:38
#4720
40K
24.85 mi12:55:022:47:116:445:48
6:48
#4664
25.2M
25.20 mi12:57:312:49:406:442:29
7:13
#4639
FINISH
26.22 mi13:04:072:56:166:446:36
6:29
#4548
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6297569856985923(Top 20%)5368(Top 33%)5368(Top 94%)
10K6.21 mi3.10 mi6111+1865556+1425556+1425947(Top 20%)5411(Top 33%)5411(Top 95%)
15K9.32 mi3.11 mi6001+1105473+835473+835923(Top 20%)5368(Top 33%)5368(Top 94%)
20K12.43 mi3.11 mi5770+2315294+1795294+1795280(Top 18%)4866(Top 30%)4866(Top 85%)
HALF13.11 mi0.68 mi5783-135302-85302-86056(Top 21%)5443(Top 33%)5443(Top 95%)
25K15.53 mi2.42 mi5589+1945131+1715131+1714717(Top 16%)4373(Top 27%)4373(Top 76%)
30K18.64 mi3.11 mi5227+3624829+3024829+3024000(Top 14%)3720(Top 23%)3720(Top 65%)
20M20.00 mi1.36 mi5031+1964658+1714658+1713274(Top 11%)3060(Top 19%)3060(Top 53%)
21M21.00 mi1.00 mi4894+1374536+1224536+1223195(Top 11%)2965(Top 18%)2965(Top 52%)
35K21.75 mi0.75 mi4863+314503+334503+334799(Top 17%)4269(Top 26%)4269(Top 75%)
23M23.00 mi1.25 mi4800+634437+664437+664299(Top 15%)3837(Top 23%)3837(Top 67%)
24M24.00 mi1.00 mi4720+804359+784359+783958(Top 14%)3542(Top 22%)3542(Top 62%)
40K24.85 mi0.85 mi4664+564300+594300+594116(Top 14%)3613(Top 22%)3613(Top 63%)
25.2M25.20 mi0.35 mi4639+254273+274273+273586(Top 12%)3163(Top 19%)3163(Top 55%)
FINISH26.22 mi1.02 mi4548+914185+884185+883991(Top 14%)3464(Top 21%)3464(Top 61%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21
+97ft-345ft

Overall

5923

Males

5368

M18-39

5368

5K→10K

3.1 - 6.2 mi

Top 20%
×5
+79ft-138ft

Overall

5947

Males

5411

M18-39

5411

10K→15K

6.2 - 9.3 mi

Top 20%
×3
+67ft-78ft

Overall

5923

Males

5368

M18-39

5368

15K→20K

9.3 - 12.4 mi

Top 18%
×5
+106ft-86ft

Overall

5280

Males

4866

M18-39

4866

20K→HALF

12.4 - 13.1 mi

Top 21%
×2
+19ft-37ft

Overall

6056

Males

5443

M18-39

5443

HALF→25K

13.1 - 15.5 mi

Top 16%
×4
+66ft-88ft

Overall

4717

Males

4373

M18-39

4373

25K→30K

15.5 - 18.6 mi

Top 14%
×9
+181ft-148ft

Overall

4000

Males

3720

M18-39

3720

30K→20M

18.6 - 20.0 mi

Top 11%
×5
+64ft-50ft

Overall

3274

Males

3060

M18-39

3060

20M→21M

20.0 - 21.0 mi

Top 11%
×8
+106ft-24ft

Overall

3195

Males

2965

M18-39

2965

21M→35K

21.0 - 21.8 mi

Top 17%
×7
+17ft-86ft

Overall

4799

Males

4269

M18-39

4269

35K→23M

21.8 - 23.0 mi

Top 15%
×5
+23ft-63ft

Overall

4299

Males

3837

M18-39

3837

23M→24M

23.0 - 24.0 mi

Top 14%
×6
+12ft-82ft

Overall

3958

Males

3542

M18-39

3542

24M→40K

24.0 - 24.9 mi

Top 14%
×1
+6ft-20ft

Overall

4116

Males

3613

M18-39

3613

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1
+13ft-16ft

Overall

3586

Males

3163

M18-39

3163

25.2M→FINISH

25.2 - 26.2 mi

Top 14%
×2
+22ft-21ft

Overall

3991

Males

3464

M18-39

3464

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2170*
Passed By
421
Net Change
+1749
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6297
5K → 10K296*110+186#6297#6111
10K → 15K203*93+110#6111#6001
15K → 20K250*19+231#6001#5770
20K → HALF1528-13#5770#5783
HALF → 25K209*15+194#5783#5589
25K → 30K370*8+362#5589#5227
30K → 20M1971+196#5227#5031
20M → 21M1447+137#5031#4894
21M → 35K5524+31#4894#4863
35K → 23M10441+63#4863#4800
23M → 24M10020+80#4800#4720
24M → 40K8327+56#4720#4664
40K → 25.2M349+25#4664#4639
25.2M → FINISH11019+91#4639#4548
TOTALS2170*421+1749

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

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Export & Support

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing