David Byfield

Bib: 68632 M GB

Masters

0:00

0:00

/ mi

Masters

Be the first to cheer!

Overall

#0 / 59786

Gender (Male)

#0 / 33594

Masters (Masters Men)

#0 / 16876

Division (M40-44)

#0 / 4826

Race Day Weather

56°/46°F

overcast clouds

Race Timeline

Ribbon color based on

FasterSteadySlower· vs. your average pace

Start

0:00

Race begins

131 ft elev

5K· 3.11 mi

11:27/mi

35:34

↑ 49 ft↓ 125 ft0.5% grade

54 ft elev

10K· 6.21 mi

12:03/mi

1:13:00

↑ 50 ft↓ 81 ft0.2% grade

24 ft elev

15K· 9.32 mi

12:23/mi

1:51:26

↑ 44 ft↓ 51 ft

18 ft elev

20K· 12.43 mi

12:03/mi

2:28:52

↑ 67 ft↓ 40 ft0.2% grade

45 ft elev

Half· 13.10 mi

13:39/mi

2:38:01

↓ 27 ft0.6% grade

25 ft elev

25K· 15.53 mi

12:40/mi

3:08:51

↑ 50 ft↓ 63 ft0.1% grade

12 ft elev

30K· 18.64 mi

15:44/mi

3:57:42

↑ 69 ft↓ 46 ft0.1% grade

35 ft elev

35K· 21.75 mi

13:52/mi

4:40:44

↑ 87 ft↓ 88 ft

34 ft elev

40K· 24.85 mi

14:21/mi

5:25:19

↑ 58 ft↓ 75 ft0.1% grade

17 ft elev

Finish· 26.22 mi

12:49/mi

5:42:47

↑ 14 ft↓ 18 ft

19 ft elev

Course Elevation

503ft

Total climb

613ft

Total descent

166ft

Range

6 to 172 ft

≈

×14story building

See every mile of your race

Add your watch's GPX to unlock per-mile pace, heart rate, and grade — mile by mile on this timeline.

Works with Garmin, Apple Watch, Strava, COROS, Suunto & more.

The Course

Half Splits

1st Half· via Half

2:38:0112:04 /mi⚡ faster

2nd Half

3:04:4614:05 /mi+16.9%

Positive split — 16.9% slower in the second half

Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	35:34	11:27	3.11 mi	35:34	11:27	-
10K	1:13:00	11:45	3.10 mi	37:26	12:03	+0:36
15K	1:51:26	11:58	3.11 mi	38:26	12:23	+0:20
20K	2:28:52	11:59	3.11 mi	37:26	12:03	-0:20
Half(13.10 mi)	2:38:01	12:04	0.67 mi	9:09	13:39	+1:36
25K	3:08:51	12:10	2.43 mi	30:50	12:40	-0:59
30K	3:57:42	12:46	3.11 mi	48:51	15:44	+3:04
35K	4:40:44	12:55	3.11 mi	43:02	13:52	-1:52
40K	5:25:19	13:06	3.10 mi	44:35	14:21	+0:29
Finish(26.22 mi)	5:42:47	13:05	1.37 mi	17:28	12:49	-1:32

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

11:27 /mi

Average Pace

13:05 /mi

Slowest Pace

15:44 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

1:50:26

32% of race

Time at Steady Pace

1:26:44

25% of race

Time at Slower Pace

2:25:37

42% of race

Average Pace: 13:04 /mi

Loading chart...

Faster pace (< avg)

Steady pace (≈ avg)

Slower pace (> avg)

Heatmap

0mi6.6mi13.1mi19.7mi26.2mi

Pace:

Faster

Steady

Slower

Checkpoint and Segment Rankings

Checkpoint	Seg. Dist	Overall	Males	M40-44	Seg. Overall	Seg. Males	Seg. M40-44
5K	3.11 mi	51406	31195	31195	50234	30625	30625
10K	3.10 mi	51776-370	31290-95	31290-95	52059	31301	31301
15K	3.11 mi	51224+552	31063+227	31063+227	50234	30625	30625
20K	3.11 mi	50223+1001	30616+447	30616+447	47994	29551	29551
Half(13.10 mi)	0.67 mi	50381-158	30653-37	30653-37	52468	30982	30982
25K	2.43 mi	49513+868	30284+369	30284+369	46069	28385	28385
30K	3.11 mi	50816-1303	30661-377	30661-377	54700	31696	31696
35K	3.11 mi	50080+736	30240+421	30240+421	45401	27216	27216
40K	3.10 mi	50140-60	30155+85	30155+85	49943	29170	29170
Finish(26.22 mi)	1.37 mi	49921+219	30029+126	30029+126	45351	26989	26989

26989

Passing Analysis

Category:

▲Net Change

0 passed by0 passed

Segment	Movement	Rank
Start → 5K	-	#51406
5K → 10K	958588-370	#51406 → #51776
10K → 15K	281833+552	#51776 → #51224
15K → 20K	951096+1001	#51224 → #50223
20K → Half	24284-158	#50223 → #50381
Half → 25K	61929+868	#50381 → #49513
25K → 30K	1429126-1303	#49513 → #50816
30K → 35K	82818+736	#50816 → #50080
35K → 40K	309249-60	#50080 → #50140
40K → Finish	41260+219	#50140 → #49921
TOTALS	34984983+1485	#51406 → #49921

Passing Visualized

Category:

Passing Circle

Position Flow

Race Lanes

Is this your race? Claim it to upload your GPX and export your data as yours.

Upload your GPX file

Add per-mile pace & heart rate — works with Garmin, Apple Watch, Strava & more.

Download your race track as a GPX or TCX file for Strava, Garmin Connect, or other 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

Quick Links

Find another athlete or browse the full results

Search for another athlete

All Results

Browse complete race results with filtering

→

Results processed 4 months ago

Public Race Data

Enhanced athlete results built from publicly available data.

Race managed by

London Marathon Events

Race timed by

Mika Timing