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BOSTON MARATHON 2025

Rob Byrd

Bib: 3055•M

OH

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 15%
Division (M18-39)
#0 / 5642
Top 34%
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
6:32/mi
20:18
↑ 97↓ 3451.5%
10K· 6.21 mi
6:27/mi
40:21
↑ 79↓ 1380.4%
15K· 9.32 mi
6:24/mi
1:00:13
↑ 67↓ 78
20K· 12.43 mi
6:21/mi
1:19:58
↑ 106↓ 860.1%
Half· 13.11 mi
6:11/mi
1:24:11
↑ 19↓ 370.5%
25K· 15.53 mi
6:14/mi
1:39:18
↑ 66↓ 880.2%
30K· 18.64 mi
6:28/mi
1:59:22
↑ 181↓ 1480.2%
20M
6:44/mi
2:08:31
↑ 64↓ 500.2%
21M
7:26/mi
2:15:57
↑ 106↓ 241.6%
35K· 21.75 mi
6:48/mi
2:21:02
↑ 17↓ 861.7%
23M
7:00/mi
2:29:48
↑ 23↓ 630.6%
24M
6:37/mi
2:36:25
↓ 821.3%
40K· 24.85 mi
6:51/mi
2:42:16
↓ 200.3%
25.2M
7:24/mi
2:44:49
↑ 13↓ 160.2%
Finish· 26.22 mi
6:31/mi
2:51:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:11
Pace6:25 /mi
2nd Half
Distance13.11 mi
Time1:27:16
Pace6:39 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:2320:186:3220:18
6:32
-
10K
6.21 mi10:41:2640:216:3020:03
6:27
-0:05
15K
9.32 mi11:01:181:00:136:2819:52
6:24
-0:03
20K
12.43 mi11:21:031:19:586:2619:45
6:21
-0:03
Half
13.11 mi11:25:161:24:116:254:13
6:11
-0:10
25K
15.53 mi11:40:231:39:186:2415:07
6:14
+0:03
30K
18.64 mi12:00:271:59:226:2420:04
6:28
+0:14
20M
20.00 mi12:09:362:08:316:269:09
6:44
+0:16
21M
21.00 mi12:17:022:15:576:287:26
7:26
+0:42
35K
21.75 mi12:22:072:21:026:295:05
6:48
-0:38
23M
23.00 mi12:30:532:29:486:318:46
7:00
+0:12
24M
24.00 mi12:37:302:36:256:316:37
6:37
-0:23
40K
24.85 mi12:43:212:42:166:325:51
6:51
+0:14
25.2M
25.20 mi12:45:542:44:496:322:33
7:24
+0:33
Finish
26.22 mi12:52:322:51:276:336:38
6:31
-0:53

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

6:11 /mi

Average Pace

6:33 /mi

Slowest Pace

7:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

39:05

23% of race

Time at Steady Pace

1:33:32

55% of race

Time at Slower Pace

38:50

23% of race

Average Pace: 6:32 /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 mi10:21:2320:186:3220:18
6:32
#4087
10K
6.21 mi10:41:2640:216:3020:03
6:27
#3732
15K
9.32 mi11:01:181:00:136:2819:52
6:24
#3394
20K
12.43 mi11:21:031:19:586:2619:45
6:21
#3077
Half
13.11 mi11:25:161:24:116:254:13
6:11
#2999
25K
15.53 mi11:40:231:39:186:2415:07
6:14
#2691
30K
18.64 mi12:00:271:59:226:2420:04
6:28
#2469
20M
20.00 mi12:09:362:08:316:269:09
6:44
#2445
21M
21.00 mi12:17:022:15:576:287:26
7:26
#2511
35K
21.75 mi12:22:072:21:026:295:05
6:48
#2557
23M
23.00 mi12:30:532:29:486:318:46
7:00
#2588
24M
24.00 mi12:37:302:36:256:316:37
6:37
#2561
40K
24.85 mi12:43:212:42:166:325:51
6:51
#2545
25.2M
25.20 mi12:45:542:44:496:322:33
7:24
#2538
Finish
26.22 mi12:52:322:51:276:336:38
6:31
#2526
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4087385438542914(Top 10%)2778(Top 17%)2778(Top 49%)
10K6.21 mi3.10 mi3732+3553536+3183536+3183396(Top 12%)3225(Top 20%)3225(Top 57%)
15K9.32 mi3.11 mi3394+3383223+3133223+3132914(Top 10%)2778(Top 17%)2778(Top 49%)
20K12.43 mi3.11 mi3077+3172934+2892934+2892309(Top 8%)2202(Top 14%)2202(Top 39%)
Half13.11 mi0.68 mi2999+782858+762858+761929(Top 7%)1842(Top 11%)1842(Top 33%)
25K15.53 mi2.42 mi2691+3082567+2912567+2911611(Top 6%)1531(Top 10%)1531(Top 27%)
30K18.64 mi3.11 mi2469+2222356+2112356+2111813(Top 6%)1724(Top 11%)1724(Top 31%)
20M20.00 mi1.36 mi2445+242332+242332+242630(Top 9%)2472(Top 15%)2472(Top 44%)
21M21.00 mi1.00 mi2511-662395-632395-634282(Top 15%)3840(Top 24%)3840(Top 68%)
35K21.75 mi0.75 mi2557-462435-402435-404092(Top 14%)3667(Top 23%)3667(Top 65%)
23M23.00 mi1.25 mi2588-312463-282463-283771(Top 13%)3394(Top 21%)3394(Top 60%)
24M24.00 mi1.00 mi2561+272430+332430+332573(Top 9%)2367(Top 15%)2367(Top 42%)
40K24.85 mi0.85 mi2545+162414+162414+163058(Top 11%)2754(Top 17%)2754(Top 49%)
25.2M25.20 mi0.35 mi2538+72406+82406+82951(Top 10%)2630(Top 16%)2630(Top 47%)
Finish26.22 mi1.02 mi2526+122393+132393+132876(Top 10%)2571(Top 16%)2571(Top 46%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21story building
+97ft-345ft

Overall

2914

Males

2778

M18-39

2778

5K→10K

3.1 - 6.2 mi

Top 12%
×5story building
+79ft-138ft

Overall

3396

Males

3225

M18-39

3225

10K→15K

6.2 - 9.3 mi

Top 10%
×3story building
+67ft-78ft

Overall

2914

Males

2778

M18-39

2778

15K→20K

9.3 - 12.4 mi

Top 8%
×5story building
+106ft-86ft

Overall

2309

Males

2202

M18-39

2202

20K→Half

12.4 - 13.1 mi

Top 7%
×2story building
+19ft-37ft

Overall

1929

Males

1842

M18-39

1842

Half→25K

13.1 - 15.5 mi

Top 6%
×4story building
+66ft-88ft

Overall

1611

Males

1531

M18-39

1531

25K→30K

15.5 - 18.6 mi

Top 6%
×9story building
+181ft-148ft

Overall

1813

Males

1724

M18-39

1724

30K→20M

18.6 - 20.0 mi

Top 9%
×5story building
+64ft-50ft

Overall

2630

Males

2472

M18-39

2472

20M→21M

20.0 - 21.0 mi

Top 15%
×8story building
+106ft-24ft

Overall

4282

Males

3840

M18-39

3840

21M→35K

21.0 - 21.8 mi

Top 14%
×7story building
+17ft-86ft

Overall

4092

Males

3667

M18-39

3667

35K→23M

21.8 - 23.0 mi

Top 13%
×5story building
+23ft-63ft

Overall

3771

Males

3394

M18-39

3394

23M→24M

23.0 - 24.0 mi

Top 9%
×6story building
+12ft-82ft

Overall

2573

Males

2367

M18-39

2367

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3058

Males

2754

M18-39

2754

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2951

Males

2630

M18-39

2630

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2876

Males

2571

M18-39

2571

Passing Analysis

Category:
Athletes Passed
1960
Passed By
399
Net Change
+1561
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4087
5K → 10K38530+355#4087#3732
10K → 15K3468+338#3732#3394
15K → 20K3203+317#3394#3077
20K → Half791+78#3077#2999
Half → 25K3091+308#2999#2691
25K → 30K2275+222#2691#2469
30K → 20M5228+24#2469#2445
20M → 21M2692-66#2445#2511
21M → 35K2066-46#2511#2557
35K → 23M4778-31#2557#2588
23M → 24M5326+27#2588#2561
24M → 40K3923+16#2561#2545
40K → 25.2M169+7#2545#2538
25.2M → Finish4129+12#2538#2526
TOTALS1960399+1561
📊

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