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BOSTON MARATHON 2026

Nicholas Tseffos

Bib: 6277•M

WI

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Overall
#0 / 29021
Top 9%
Gender (Male)
#0 / 16340
Top 15%
Age Group (M18-39)
#0 / 5723
Top 36%
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
20:13
3.11 mi
Rank: #4223
Start → 5K
20:13 | 6:31/mi
10K
40:22
6.21 mi
Rank: #4160 (+63)
5K → 10K
20:09 | 6:30/mi
15K
1:00:43
9.32 mi
Rank: #4273 (-113)
10K → 15K
20:21 | 6:34/mi
20K
1:20:59
12.43 mi
Rank: #4167 (+106)
15K → 20K
20:16 | 6:32/mi
HALF
1:25:20
13.11 mi
Rank: #4137 (+30)
20K → HALF
4:21 | 6:23/mi
25K
1:40:59
15.53 mi
Rank: #3945 (+192)
HALF → 25K
15:39 | 6:28/mi
30K
2:01:27
18.64 mi
Rank: #3721 (+224)
25K → 30K
20:28 | 6:36/mi
20M
2:10:21
20.00 mi
Rank: #3593 (+128)
30K → 20M
8:54 | 6:34/mi
21M
2:16:56
21.00 mi
Rank: #3445 (+148)
20M → 21M
6:35 | 6:35/mi
35K
2:21:31
21.75 mi
Rank: #3357 (+88)
21M → 35K
4:35 | 6:08/mi
23M
2:29:22
23.00 mi
Rank: #3184 (+173)
35K → 23M
7:51 | 6:17/mi
24M
2:35:22
24.00 mi
Rank: #3017 (+167)
23M → 24M
6:00 | 6:00/mi
40K
2:40:27
24.85 mi
Rank: #2871 (+146)
24M → 40K
5:05 | 5:57/mi
25.2M
2:42:37
25.20 mi
Rank: #2811 (+60)
40K → 25.2M
2:10 | 6:17/mi
FINISH
2:48:16
26.22 mi
Rank: #2603 (+208)
25.2M → FINISH
5:39 | 5:33/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half
via HALF
Distance13.11 mi
Time1:25:20
Pace6:31 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:22:56
Pace6:20 /mi
📊Negative Split: 2.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:4220:136:3120:13
6:31
-
10K
6.21 mi10:45:5140:226:3020:09
6:30
-0:01
15K
9.32 mi11:06:121:00:436:3120:21
6:34
+0:04
20K
12.43 mi11:26:281:20:596:3120:16
6:32
-0:02
HALF
13.11 mi11:30:491:25:206:314:21
6:23
-0:09
25K
15.53 mi11:46:281:40:596:3115:39
6:28
+0:05
30K
18.64 mi12:06:562:01:276:3120:28
6:36
+0:08
20M
20.00 mi12:15:502:10:216:328:54
6:34
-0:02
21M
21.00 mi12:22:252:16:566:326:35
6:35
+0:01
35K
21.75 mi12:27:002:21:316:314:35
6:08
-0:27
23M
23.00 mi12:34:512:29:226:307:51
6:17
+0:09
24M
24.00 mi12:40:512:35:226:296:00
6:00
-0:17
40K
24.85 mi12:45:562:40:276:285:05
5:57
-0:03
25.2M
25.20 mi12:48:062:42:376:282:10
6:17
+0:20
FINISH
26.22 mi12:53:452:48:166:265:39
5:33
-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

5:33 /mi

Average Pace

6:25 /mi

Slowest Pace

6:36 /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

16:44

10% of race

Time at Steady Pace

1:35:14

57% of race

Time at Slower Pace

56:18

33% of race

Average Pace: 6:25 /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 mi10:25:4220:136:3120:13
6:31
#4223
10K
6.21 mi10:45:5140:226:3020:09
6:30
#4160
15K
9.32 mi11:06:121:00:436:3120:21
6:34
#4273
20K
12.43 mi11:26:281:20:596:3120:16
6:32
#4167
HALF
13.11 mi11:30:491:25:206:314:21
6:23
#4137
25K
15.53 mi11:46:281:40:596:3115:39
6:28
#3945
30K
18.64 mi12:06:562:01:276:3120:28
6:36
#3721
20M
20.00 mi12:15:502:10:216:328:54
6:34
#3593
21M
21.00 mi12:22:252:16:566:326:35
6:35
#3445
35K
21.75 mi12:27:002:21:316:314:35
6:08
#3357
23M
23.00 mi12:34:512:29:226:307:51
6:17
#3184
24M
24.00 mi12:40:512:35:226:296:00
6:00
#3017
40K
24.85 mi12:45:562:40:276:285:05
5:57
#2871
25.2M
25.20 mi12:48:062:42:376:282:10
6:17
#2811
FINISH
26.22 mi12:53:452:48:166:265:39
5:33
#2603
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 mi4223399839984562(Top 16%)4284(Top 26%)4284(Top 75%)
10K6.21 mi3.10 mi4160+633950+483950+484093(Top 14%)3878(Top 24%)3878(Top 68%)
15K9.32 mi3.11 mi4273-1134044-944044-944562(Top 16%)4284(Top 26%)4284(Top 75%)
20K12.43 mi3.11 mi4167+1063952+923952+923927(Top 14%)3722(Top 23%)3722(Top 65%)
HALF13.11 mi0.68 mi4137+303922+303922+303525(Top 12%)3366(Top 21%)3366(Top 59%)
25K15.53 mi2.42 mi3945+1923750+1723750+1723183(Top 11%)3043(Top 19%)3043(Top 53%)
30K18.64 mi3.11 mi3721+2243542+2083542+2083036(Top 10%)2879(Top 18%)2879(Top 50%)
20M20.00 mi1.36 mi3593+1283419+1233419+1232686(Top 9%)2538(Top 16%)2538(Top 44%)
21M21.00 mi1.00 mi3445+1483284+1353284+1351580(Top 5%)1515(Top 9%)1515(Top 26%)
35K21.75 mi0.75 mi3357+883201+833201+831722(Top 6%)1644(Top 10%)1644(Top 29%)
23M23.00 mi1.25 mi3184+1733042+1593042+1591469(Top 5%)1405(Top 9%)1405(Top 25%)
24M24.00 mi1.00 mi3017+1672885+1572885+1571084(Top 4%)1036(Top 6%)1036(Top 18%)
40K24.85 mi0.85 mi2871+1462746+1392746+139650(Top 2%)620(Top 4%)620(Top 11%)
25.2M25.20 mi0.35 mi2811+602690+562690+56478(Top 2%)463(Top 3%)463(Top 8%)
FINISH26.22 mi1.02 mi2603+2082497+1932497+193407(Top 1%)389(Top 2%)389(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21
+97ft-345ft

Overall

4562

Males

4284

M18-39

4284

5K→10K

3.1 - 6.2 mi

Top 14%
×5
+79ft-138ft

Overall

4093

Males

3878

M18-39

3878

10K→15K

6.2 - 9.3 mi

Top 16%
×3
+67ft-78ft

Overall

4562

Males

4284

M18-39

4284

15K→20K

9.3 - 12.4 mi

Top 14%
×5
+106ft-86ft

Overall

3927

Males

3722

M18-39

3722

20K→HALF

12.4 - 13.1 mi

Top 12%
×2
+19ft-37ft

Overall

3525

Males

3366

M18-39

3366

HALF→25K

13.1 - 15.5 mi

Top 11%
×4
+66ft-88ft

Overall

3183

Males

3043

M18-39

3043

25K→30K

15.5 - 18.6 mi

Top 10%
×9
+181ft-148ft

Overall

3036

Males

2879

M18-39

2879

30K→20M

18.6 - 20.0 mi

Top 9%
×5
+64ft-50ft

Overall

2686

Males

2538

M18-39

2538

20M→21M

20.0 - 21.0 mi

Top 5%
×8
+106ft-24ft

Overall

1580

Males

1515

M18-39

1515

21M→35K

21.0 - 21.8 mi

Top 6%
×7
+17ft-86ft

Overall

1722

Males

1644

M18-39

1644

35K→23M

21.8 - 23.0 mi

Top 5%
×5
+23ft-63ft

Overall

1469

Males

1405

M18-39

1405

23M→24M

23.0 - 24.0 mi

Top 4%
×6
+12ft-82ft

Overall

1084

Males

1036

M18-39

1036

24M→40K

24.0 - 24.9 mi

Top 2%
×1
+6ft-20ft

Overall

650

Males

620

M18-39

620

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1
+13ft-16ft

Overall

478

Males

463

M18-39

463

25.2M→FINISH

25.2 - 26.2 mi

Top 1%
×2
+22ft-21ft

Overall

407

Males

389

M18-39

389

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1997*
Passed By
377
Net Change
+1620
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4223
5K → 10K179116+63#4223#4160
10K → 15K73186-113#4160#4273
15K → 20K14337+106#4273#4167
20K → HALF366+30#4167#4137
HALF → 25K1931+192#4137#3945
25K → 30K241*17+224#3945#3721
30K → 20M1346+128#3721#3593
20M → 21M1513+148#3593#3445
21M → 35K891+88#3445#3357
35K → 23M1752+173#3357#3184
23M → 24M1692+167#3184#3017
24M → 40K1460+146#3017#2871
40K → 25.2M600+60#2871#2811
25.2M → FINISH208*0+208#2811#2603
TOTALS1997*377+1620

* 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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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing