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BOSTON MARATHON 2026

Nathaniel Fierstos

Bib: 3714β€’M

CA

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Overall
#0 / 29021
Top 11%
Gender (Male)
#0 / 16340
Top 18%
Age Group (M18-39)
#0 / 5723
Top 41%
Race Day Weather
51Β°/41Β°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
19:31
3.11 mi
Rank: #2566
Start β†’ 5K
19:31 | 6:17/mi
10K
39:16
6.21 mi
Rank: #2888 (-322)
5K β†’ 10K
19:45 | 6:22/mi
15K
59:04
9.32 mi
Rank: #3024 (-136)
10K β†’ 15K
19:48 | 6:23/mi
20K
1:19:01
12.43 mi
Rank: #3088 (-64)
15K β†’ 20K
19:57 | 6:26/mi
HALF
1:23:21
13.11 mi
Rank: #3110 (-22)
20K β†’ HALF
4:20 | 6:22/mi
25K
1:39:04
15.53 mi
Rank: #3124 (-14)
HALF β†’ 25K
15:43 | 6:29/mi
30K
1:59:51
18.64 mi
Rank: #3157 (-33)
25K β†’ 30K
20:47 | 6:42/mi
20M
2:08:57
20.00 mi
Rank: #3151 (+6)
30K β†’ 20M
9:06 | 6:42/mi
21M
2:16:03
21.00 mi
Rank: #3172 (-21)
20M β†’ 21M
7:06 | 7:06/mi
35K
2:20:49
21.75 mi
Rank: #3138 (+34)
21M β†’ 35K
4:46 | 6:23/mi
23M
2:29:10
23.00 mi
Rank: #3119 (+19)
35K β†’ 23M
8:21 | 6:41/mi
24M
2:35:36
24.00 mi
Rank: #3081 (+38)
23M β†’ 24M
6:26 | 6:26/mi
40K
2:41:14
24.85 mi
Rank: #3047 (+34)
24M β†’ 40K
5:38 | 6:36/mi
25.2M
2:43:43
25.20 mi
Rank: #3044 (+3)
40K β†’ 25.2M
2:29 | 7:13/mi
FINISH
2:50:16
26.22 mi
Rank: #3052 (-8)
25.2M β†’ FINISH
6:33 | 6:26/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:23:21
Pace6:22 /mi
2nd Half
Distance13.11 mi
Time1:26:55
Pace6:38 /mi
πŸ“ŠPositive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:2919:316:1719:31
6:17
-
10K
6.21 mi10:41:1439:166:2019:45
6:22
+0:05
15K
9.32 mi11:01:0259:046:2119:48
6:23
+0:01
20K
12.43 mi11:20:591:19:016:2219:57
6:26
+0:03
HALF
13.11 mi11:25:191:23:216:224:20
6:22
-0:04
25K
15.53 mi11:41:021:39:046:2315:43
6:29
+0:07
30K
18.64 mi12:01:491:59:516:2620:47
6:42
+0:13
20M
20.00 mi12:10:552:08:576:279:06
6:42
0:00
21M
21.00 mi12:18:012:16:036:297:06
7:06
+0:24
35K
21.75 mi12:22:472:20:496:294:46
6:23
-0:43
23M
23.00 mi12:31:082:29:106:308:21
6:41
+0:18
24M
24.00 mi12:37:342:35:366:306:26
6:26
-0:15
40K
24.85 mi12:43:122:41:146:305:38
6:36
+0:10
25.2M
25.20 mi12:45:412:43:436:302:29
7:13
+0:37
FINISH
26.22 mi12:52:142:50:166:306:33
6:26
-0:47

Checkpoint Splits Visualizations

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

πŸ“ˆPace 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

6:17 /mi

Average Pace

6:30 /mi

Slowest Pace

7:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

2:40:41

94% of race

Time at Steady Pace

9:35

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:30 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi10:21:2919:316:1719:31
6:17
#2566
10K
6.21 mi10:41:1439:166:2019:45
6:22
#2888
15K
9.32 mi11:01:0259:046:2119:48
6:23
#3024
20K
12.43 mi11:20:591:19:016:2219:57
6:26
#3088
HALF
13.11 mi11:25:191:23:216:224:20
6:22
#3110
25K
15.53 mi11:41:021:39:046:2315:43
6:29
#3124
30K
18.64 mi12:01:491:59:516:2620:47
6:42
#3157
20M
20.00 mi12:10:552:08:576:279:06
6:42
#3151
21M
21.00 mi12:18:012:16:036:297:06
7:06
#3172
35K
21.75 mi12:22:472:20:496:294:46
6:23
#3138
23M
23.00 mi12:31:082:29:106:308:21
6:41
#3119
24M
24.00 mi12:37:342:35:366:306:26
6:26
#3081
40K
24.85 mi12:43:122:41:146:305:38
6:36
#3047
25.2M
25.20 mi12:45:412:43:436:302:29
7:13
#3044
FINISH
26.22 mi12:52:142:50:166:306:33
6:26
#3052
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 mi2566246524653336(Top 11%)3187(Top 20%)3187(Top 56%)
10K6.21 mi3.10 mi2888-3222772-3072772-3073240(Top 11%)3102(Top 19%)3102(Top 54%)
15K9.32 mi3.11 mi3024-1362902-1302902-1303336(Top 11%)3187(Top 20%)3187(Top 56%)
20K12.43 mi3.11 mi3088-642960-582960-583262(Top 11%)3130(Top 19%)3130(Top 55%)
HALF13.11 mi0.68 mi3110-222980-202980-203396(Top 12%)3252(Top 20%)3252(Top 57%)
25K15.53 mi2.42 mi3124-142994-142994-143333(Top 11%)3178(Top 19%)3178(Top 56%)
30K18.64 mi3.11 mi3157-333025-313025-313628(Top 13%)3400(Top 21%)3400(Top 59%)
20M20.00 mi1.36 mi3151+63014+113014+113440(Top 12%)3202(Top 20%)3202(Top 56%)
21M21.00 mi1.00 mi3172-213036-223036-223991(Top 14%)3600(Top 22%)3600(Top 63%)
35K21.75 mi0.75 mi3138+343003+333003+332851(Top 10%)2665(Top 16%)2665(Top 47%)
23M23.00 mi1.25 mi3119+192981+222981+223302(Top 11%)3025(Top 19%)3025(Top 53%)
24M24.00 mi1.00 mi3081+382938+432938+432812(Top 10%)2578(Top 16%)2578(Top 45%)
40K24.85 mi0.85 mi3047+342907+312907+312979(Top 10%)2708(Top 17%)2708(Top 47%)
25.2M25.20 mi0.35 mi3044+32903+42903+43521(Top 12%)3098(Top 19%)3098(Top 54%)
FINISH26.22 mi1.02 mi3052-82906-32906-33701(Top 13%)3235(Top 20%)3235(Top 57%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
Γ—21
+97ft-345ft

Overall

3336

Males

3187

M18-39

3187

5K→10K

3.1 - 6.2 mi

Top 11%
Γ—5
+79ft-138ft

Overall

3240

Males

3102

M18-39

3102

10K→15K

6.2 - 9.3 mi

Top 11%
Γ—3
+67ft-78ft

Overall

3336

Males

3187

M18-39

3187

15K→20K

9.3 - 12.4 mi

Top 11%
Γ—5
+106ft-86ft

Overall

3262

Males

3130

M18-39

3130

20K→HALF

12.4 - 13.1 mi

Top 12%
Γ—2
+19ft-37ft

Overall

3396

Males

3252

M18-39

3252

HALF→25K

13.1 - 15.5 mi

Top 11%
Γ—4
+66ft-88ft

Overall

3333

Males

3178

M18-39

3178

25K→30K

15.5 - 18.6 mi

Top 13%
Γ—9
+181ft-148ft

Overall

3628

Males

3400

M18-39

3400

30K→20M

18.6 - 20.0 mi

Top 12%
Γ—5
+64ft-50ft

Overall

3440

Males

3202

M18-39

3202

20M→21M

20.0 - 21.0 mi

Top 14%
Γ—8
+106ft-24ft

Overall

3991

Males

3600

M18-39

3600

21M→35K

21.0 - 21.8 mi

Top 10%
Γ—7
+17ft-86ft

Overall

2851

Males

2665

M18-39

2665

35K→23M

21.8 - 23.0 mi

Top 11%
Γ—5
+23ft-63ft

Overall

3302

Males

3025

M18-39

3025

23M→24M

23.0 - 24.0 mi

Top 10%
Γ—6
+12ft-82ft

Overall

2812

Males

2578

M18-39

2578

24M→40K

24.0 - 24.9 mi

Top 10%
Γ—1
+6ft-20ft

Overall

2979

Males

2708

M18-39

2708

40K→25.2M

24.9 - 25.2 mi

Top 12%
Γ—1
+13ft-16ft

Overall

3521

Males

3098

M18-39

3098

25.2M→FINISH

25.2 - 26.2 mi

Top 13%
Γ—2
+22ft-21ft

Overall

3701

Males

3235

M18-39

3235

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
628
Passed By
1114
Net Change
-486
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#2566
5K β†’ 10K27349-322#2566#2888
10K β†’ 15K39175-136#2888#3024
15K β†’ 20K60124-64#3024#3088
20K β†’ HALF729-22#3088#3110
HALF β†’ 25K6276-14#3110#3124
25K β†’ 30K70103-33#3124#3157
30K β†’ 20M5246+6#3157#3151
20M β†’ 21M3960-21#3151#3172
21M β†’ 35K4410+34#3172#3138
35K β†’ 23M6344+19#3138#3119
23M β†’ 24M6628+38#3119#3081
24M β†’ 40K4410+34#3081#3047
40K β†’ 25.2M2017+3#3047#3044
25.2M β†’ FINISH3543-8#3044#3052
TOTALS6281114-486
πŸ“Š

Passing Analysis Visualizations

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

Time:
Category:

πŸ“ˆPosition Graph

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🎨Heatmap Timeline

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πŸ”„Passing Circle

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🌊Position Flow

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πŸƒRace 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