Boston Marathon logo
BOSTON MARATHON 2025

Oliver Narbett

Bib: 31925•M

0:00
0:00
/ mi
Be the first to cheer!
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
8:07/mi
25:13
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
51:37
↑ 79↓ 1380.4%
15K· 9.32 mi
8:47/mi
1:18:53
↑ 67↓ 78
20K· 12.43 mi
9:03/mi
1:47:00
↑ 106↓ 860.1%
Half· 13.11 mi
8:27/mi
1:52:46
↑ 19↓ 370.5%
25K· 15.53 mi
9:28/mi
2:15:43
↑ 66↓ 880.2%
30K· 18.64 mi
9:58/mi
2:46:42
↑ 181↓ 1480.2%
20M
9:39/mi
2:59:49
↑ 64↓ 500.2%
21M
10:42/mi
3:10:31
↑ 106↓ 241.6%
35K· 21.75 mi
8:39/mi
3:16:59
↑ 17↓ 861.7%
23M
9:49/mi
3:29:17
↑ 23↓ 630.6%
24M
9:12/mi
3:38:29
↓ 821.3%
40K· 24.85 mi
9:19/mi
3:46:27
↓ 200.3%
25.2M
9:46/mi
3:49:49
↑ 13↓ 160.2%
Finish· 26.22 mi
7:32/mi
3:57:30
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:46
Pace8:36 /mi
2nd Half
Distance13.11 mi
Time2:04:44
Pace9:31 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:5725:138:0725:13
8:07
-
10K
6.21 mi12:12:2151:378:1826:24
8:30
+0:23
15K
9.32 mi12:39:371:18:538:2827:16
8:47
+0:17
20K
12.43 mi13:07:441:47:008:3728:07
9:03
+0:16
Half
13.11 mi13:13:301:52:468:365:46
8:27
-0:36
25K
15.53 mi13:36:272:15:438:4422:57
9:28
+1:01
30K
18.64 mi14:07:262:46:428:5730:59
9:58
+0:30
20M
20.00 mi14:20:332:59:498:5913:07
9:39
-0:19
21M
21.00 mi14:31:153:10:319:0410:42
10:42
+1:03
35K
21.75 mi14:37:433:16:599:036:28
8:39
-2:03
23M
23.00 mi14:50:013:29:179:0612:18
9:49
+1:10
24M
24.00 mi14:59:133:38:299:069:12
9:12
-0:37
40K
24.85 mi15:07:113:46:279:077:58
9:19
+0:07
25.2M
25.20 mi15:10:333:49:499:073:22
9:46
+0:27
Finish
26.22 mi15:18:143:57:309:047:41
7:32
-2:14

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

7:32 /mi

Average Pace

9:04 /mi

Slowest Pace

10:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:48

42% of race

Time at Steady Pace

1:08:14

29% of race

Time at Slower Pace

1:10:28

30% of race

Average Pace: 9:03 /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 mi11:45:5725:138:0725:13
8:07
#17474
10K
6.21 mi12:12:2151:378:1826:24
8:30
#18657
15K
9.32 mi12:39:371:18:538:2827:16
8:47
#19439
20K
12.43 mi13:07:441:47:008:3728:07
9:03
#19919
Half
13.11 mi13:13:301:52:468:365:46
8:27
#19876
25K
15.53 mi13:36:272:15:438:4422:57
9:28
#20283
30K
18.64 mi14:07:262:46:428:5730:59
9:58
#20583
20M
20.00 mi14:20:332:59:498:5913:07
9:39
#20509
21M
21.00 mi14:31:153:10:319:0410:42
10:42
#20528
35K
21.75 mi14:37:433:16:599:036:28
8:39
#20383
23M
23.00 mi14:50:013:29:179:0612:18
9:49
#20374
24M
24.00 mi14:59:133:38:299:069:12
9:12
#20305
40K
24.85 mi15:07:113:46:279:077:58
9:19
#20226
25.2M
25.20 mi15:10:333:49:499:073:22
9:46
#20160
Finish
26.22 mi15:18:143:57:309:047:41
7:32
#19839
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi17474114101141020901(Top 74%)12898(Top 80%)12898(Top 229%)
10K6.21 mi3.10 mi18657-118311889-47911889-47919774(Top 70%)12375(Top 77%)12375(Top 219%)
15K9.32 mi3.11 mi19439-78212236-34712236-34720901(Top 74%)12898(Top 80%)12898(Top 229%)
20K12.43 mi3.11 mi19919-48012435-19912435-19921213(Top 75%)12992(Top 81%)12992(Top 230%)
Half13.11 mi0.68 mi19876+4312417+1812417+1818880(Top 66%)12005(Top 75%)12005(Top 213%)
25K15.53 mi2.42 mi20283-40712577-16012577-16021742(Top 77%)13173(Top 82%)13173(Top 233%)
30K18.64 mi3.11 mi20583-30012667-9012667-9021516(Top 76%)12951(Top 80%)12951(Top 230%)
20M20.00 mi1.36 mi20509+7412619+4812619+4819772(Top 70%)12057(Top 75%)12057(Top 214%)
21M21.00 mi1.00 mi20528-1912603+1612603+1620589(Top 72%)12295(Top 76%)12295(Top 218%)
35K21.75 mi0.75 mi20383+14512525+7812525+7816326(Top 57%)10335(Top 64%)10335(Top 183%)
23M23.00 mi1.25 mi20374+912496+2912496+2919866(Top 70%)11836(Top 73%)11836(Top 210%)
24M24.00 mi1.00 mi20305+6912447+4912447+4918346(Top 65%)11085(Top 69%)11085(Top 196%)
40K24.85 mi0.85 mi20226+7912386+6112386+6117927(Top 63%)10794(Top 67%)10794(Top 191%)
25.2M25.20 mi0.35 mi20160+6612351+3512351+3515906(Top 56%)9843(Top 61%)9843(Top 174%)
Finish26.22 mi1.02 mi19839+32112191+16012191+1609489(Top 33%)6717(Top 42%)6717(Top 119%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

20901

Males

12898

M18-39

12898

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19774

Males

12375

M18-39

12375

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

20901

Males

12898

M18-39

12898

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

21213

Males

12992

M18-39

12992

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18880

Males

12005

M18-39

12005

Half→25K

13.1 - 15.5 mi

Top 77%
×4story building
+66ft-88ft

Overall

21742

Males

13173

M18-39

13173

25K→30K

15.5 - 18.6 mi

Top 76%
×9story building
+181ft-148ft

Overall

21516

Males

12951

M18-39

12951

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

19772

Males

12057

M18-39

12057

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

20589

Males

12295

M18-39

12295

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

16326

Males

10335

M18-39

10335

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

19866

Males

11836

M18-39

11836

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

18346

Males

11085

M18-39

11085

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17927

Males

10794

M18-39

10794

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15906

Males

9843

M18-39

9843

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

9489

Males

6717

M18-39

6717

Passing Analysis

Category:
Athletes Passed
1470
Passed By
3835
Net Change
-2365
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17474
5K → 10K351218-1183#17474#18657
10K → 15K40822-782#18657#19439
15K → 20K80560-480#19439#19919
20K → Half518+43#19919#19876
Half → 25K68475-407#19876#20283
25K → 30K145445-300#20283#20583
30K → 20M13561+74#20583#20509
20M → 21M81100-19#20509#20528
21M → 35K1494+145#20528#20383
35K → 23M9687+9#20383#20374
23M → 24M9627+69#20374#20305
24M → 40K9819+79#20305#20226
40K → 25.2M748+66#20226#20160
25.2M → Finish3221+321#20160#19839
TOTALS14703835-2365
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing